说明
在前面的Prometheus + Grafana 部署说明之「安装」文章里，大致介绍说明了Prometheus和Grafana的一些安装使用，现在开始如何始部署Prometheus+Grafana 来监控Redis
部署
在之前介绍的Prometheus系列文章里，已经了解了Prometheus是通过拉取的方式来保存监控数据的，可以自己写一个服务来去Redis来获取需要监控的相关指标，也可以直接用现成的exporter，如GitHub上redis_exporter，本文对Redis的监控是通过该导出器进行的。
下载&解压：
#下载
wget https://github.com/oliver006/redis_exporter/releases/download/v1.3.5/redis_exporter-v1.3.5.linux-amd64.tar.gz
#解压
tar xvf redis_exporter-v1.3.5.linux-amd64.tar.gz
注意：redis_exporter 版本从 0.x to 1.x 有了很大的改变：为了使redis_exporter更紧密地遵循“编写导出器的最佳实践”，不再直接支持配置（和抓取）多个Redis实例，而是将这一任务推给了Prometheus服务器，具体情况可以看作者说明。如果需要抓取多个实例，请查看如何配置Prometheus服务器以刮取多个实例。
但如果已经按照Prometheus项目的推荐使用了导出器，并且仅scrape了一个实例（例如使用--redis.addr和--redis.password 标志），那么没有任何改变。
准备：
1）在开启redis_exporter [v1.3.5]之前，需要先配置Prometheus，按照Prometheus + Grafana 部署说明之「安装」装好Prometheus之后，修改其配置文件。本次示例是通过文件服务发现来处理的，因为监控服务的同时也要监控系统相关的指标，所以需要node_exporter和redis_exporter。文件发现机制有2种方式：exporter配置可以放到一个文件，也可以为每个实例单独配置文件。如放到一个配置文件：
① 多实例相同密码的抓取（只需要一个redis-exporter），集群信息：
3节点无从，密码 abc
192.168.163.132、133、134 -- 6379
192.168.163.132、133、134 -- 6380
1.1 exporter配置放到一个文件的相关配置：
prometheus.yml：
global:
scrape_interval: 10s # Set the scrape interval to every 15 seconds. Default is every 1 minute.
evaluation_interval: 10s # Evaluate rules every 15 seconds. The default is every 1 minute.
alerting:
alertmanagers:
- static_configs:
- targets:
# - alertmanager:9093
rule_files:
# - "first_rules.yml"
# - "second_rules.yml"
scrape_configs:
- job_name: 'prometheus'
static_configs:
- targets: ['192.168.163.132:9099']
- job_name: 'node_exporter'
scrape_interval: 1s
file_sd_configs:
- files:
- targets/node/nodes-instances.json
refresh_interval: 10s
relabel_configs:
- action: replace
source_labels: ['__address__']
regex: (.*):(.*)
replacement: $1
target_label: hostname
- action: labeldrop
regex: __meta_filepath
- job_name: 'redis_exporter'
scrape_interval: 1s
file_sd_configs:
- files:
- targets/redis/redis-instances.json
metrics_path: /scrape
relabel_configs:
- action: replace
source_labels: ['__address__']
regex: (.*):(.*)
replacement: $1
target_label: hostip
- source_labels: [__address__]
target_label: __param_target
- source_labels: [__param_target]
target_label: instance
- target_label: __address__
replacement: 192.168.163.132:9123
nodes-instances.json：
[
{
"targets": [ "192.168.163.132:9199", "192.168.163.133:9199","192.168.163.134:9199"]
}
]
redis-instances.json：
[
{
"targets": [ "192.168.163.132:6379","192.168.163.133:6379","192.168.163.134:6379"],
"labels": {"env":"test","cluster":"test_one"}
},
{
"targets": [ "192.168.163.132:6380","192.168.163.133:6380","192.168.163.134:6380"],
"labels": {"env":"test","cluster":"test_two"}
}
]
以后如果有相关的实例集群包括主从加进来，只要修改以上2个exporter文件即可。最后开启exporter：
#各个节点执行 node-exporter：
./node_exporter --web.listen-address=:9199
#指定节点执行 redis_exporter:
./redis_exporter -redis-only-metrics -redis.password abc -web.listen-address=:9123
1.2 exporter配置独立存放的相关配置：
prometheus.yml：
global:
scrape_interval: 10s # Set the scrape interval to every 15 seconds. Default is every 1 minute.
evaluation_interval: 10s # Evaluate rules every 15 seconds. The default is every 1 minute.
alerting:
alertmanagers:
- static_configs:
- targets:
# - alertmanager:9093
rule_files:
# - "first_rules.yml"
# - "second_rules.yml"
scrape_configs:
- job_name: 'prometheus'
static_configs:
- targets: ['192.168.163.132:9099']
- job_name: 'node_exporter'
scrape_interval: 1s
file_sd_configs:
- files:
- targets/node/*.yml
refresh_interval: 10s
relabel_configs:
- action: replace
source_labels: ['__address__']
regex: (.*):(.*)
replacement: $1
target_label: hostname
- action: labeldrop
regex: __meta_filepath
- job_name: 'redis_exporter'
scrape_interval: 1s
file_sd_configs:
- files:
- targets/redis/*.yml
metrics_path: /scrape
relabel_configs:
- action: replace
source_labels: ['__address__']
regex: (.*):(.*)
replacement: $1
target_label: hostip
- source_labels: [__address__]
target_label: __param_target
- source_labels: [__param_target]
target_label: instance
- target_label: __address__
replacement: 192.168.163.132:9123
targets/node/*.yml：
# ls -lh /etc/prometheus/targets/node/*.yml
-rw-r--r-- 1 root root 117 4月 18 14:51 /etc/prometheus/targets/node/test2_node_exporter.yml
-rw-r--r-- 1 root root 117 4月 18 14:51 /etc/prometheus/targets/node/test3_node_exporter.yml
-rw-r--r-- 1 root root 117 4月 18 14:51 /etc/prometheus/targets/node/test4_node_exporter.yml
# cat /etc/prometheus/targets/node/test2_node_exporter.yml
[
{
"targets": ["192.168.163.132:9199"],
"labels": {"env":"test","alias":"test2"}
}
]
# cat /etc/prometheus/targets/node/test3_node_exporter.yml
[
{
"targets": ["192.168.163.133:9199"],
"labels": {"env":"test","alias":"test3"}
}
]
# cat /etc/prometheus/targets/node/test4_node_exporter.yml
[
{
"targets": ["192.168.163.134:9199"],
"labels": {"env":"test","alias":"test4"}
}
]
targets/redis/*.yml：
# ls -lh /etc/prometheus/targets/redis/*.yml
-rw-r--r-- 1 root root 121 4月 18 13:14 /etc/prometheus/targets/redis/test2_6379_redis_exporter.yml
-rw-r--r-- 1 root root 121 4月 18 13:14 /etc/prometheus/targets/redis/test2_6380_redis_exporter.yml
-rw-r--r-- 1 root root 121 4月 18 13:14 /etc/prometheus/targets/redis/test3_6379_redis_exporter.yml
-rw-r--r-- 1 root root 121 4月 18 13:15 /etc/prometheus/targets/redis/test3_6380_redis_exporter.yml
-rw-r--r-- 1 root root 121 4月 18 13:14 /etc/prometheus/targets/redis/test4_6379_redis_exporter.yml
-rw-r--r-- 1 root root 121 4月 18 13:15 /etc/prometheus/targets/redis/test4_6380_redis_exporter.yml
# cat /etc/prometheus/targets/redis/test2_6379_redis_exporter.yml
[
{
"targets": [ "192.168.163.132:6379"],
"labels": {"env":"test","cluster":"test_one","alias":"test2"}
}
]
# cat /etc/prometheus/targets/redis/test3_6379_redis_exporter.yml
[
{
"targets": [ "192.168.163.133:6379"],
"labels": {"env":"test","cluster":"test_one","alias":"test3"}
}
]
# cat /etc/prometheus/targets/redis/test4_6379_redis_exporter.yml
[
{
"targets": [ "192.168.163.134:6379"],
"labels": {"env":"test","cluster":"test_one","alias":"test4"}
}
]
# cat /etc/prometheus/targets/redis/test2_6380_redis_exporter.yml
[
{
"targets": [ "192.168.163.132:6380"],
"labels": {"env":"test","cluster":"test_two","alias":"test2"}
}
]
# cat /etc/prometheus/targets/redis/test3_6380_redis_exporter.yml
[
{
"targets": [ "192.168.163.133:6380"],
"labels": {"env":"test","cluster":"test_two","alias":"test3"}
}
]
# cat /etc/prometheus/targets/redis/test4_6380_redis_exporter.yml
[
{
"targets": [ "192.168.163.134:6380"],
"labels": {"env":"test","cluster":"test_two","alias":"test4"}
}
]
以后如果有相关的实例集群加进来包括主从，只要新增2类exporter文件即可。最后开启exporter：
#各个节点执行 node-exporter：
./node_exporter --web.listen-address=:9199
#指定节点执行 redis_exporter:
./redis_exporter -redis-only-metrics -redis.password abc -web.listen-address=:9123
以上2种通过文件服务发现的方法，推荐第2个。因为新增的文件有问题也不影响服务，修改文件可能会引发问题；并且也可以为各个节点打需要的labels。
最后配置Grafana，效果：
JSON Model：
{
"annotations": {
"list": [
{
"builtIn": 1,
"datasource": "-- Grafana --",
"enable": true,
"hide": true,
"iconColor": "rgba(0, 211, 255, 1)",
"name": "Annotations & Alerts",
"type": "dashboard"
}
]
},
"editable": true,
"gnetId": null,
"graphTooltip": 0,
"id": 13,
"iteration": 1587194136640,
"links": [],
"panels": [
{
"cacheTimeout": null,
"colorBackground": false,
"colorValue": true,
"colors": [
"#299c46",
"rgba(237, 129, 40, 0.89)",
"#d44a3a"
],
"datasource": null,
"description": "集群个数",
"format": "none",
"gauge": {
"maxValue": 100,
"minValue": 0,
"show": false,
"thresholdLabels": false,
"thresholdMarkers": true
},
"gridPos": {
"h": 3,
"w": 5,
"x": 0,
"y": 0
},
"id": 8,
"interval": null,
"links": [],
"mappingType": 1,
"mappingTypes": [
{
"name": "value to text",
"value": 1
},
{
"name": "range to text",
"value": 2
}
],
"maxDataPoints": 100,
"nullPointMode": "connected",
"nullText": null,
"postfix": "",
"postfixFontSize": "50%",
"prefix": "",
"prefixFontSize": "50%",
"rangeMaps": [
{
"from": "null",
"text": "N/A",
"to": "null"
}
],
"sparkline": {
"fillColor": "rgba(31, 118, 189, 0.18)",
"full": false,
"lineColor": "rgb(31, 120, 193)",
"show": false,
"ymax": null,
"ymin": null
},
"tableColumn": "",
"targets": [
{
"expr": "count(count(redis_up{cluster=~"$cluster"}>0) by (cluster))",
"interval": "",
"legendFormat": "",
"refId": "A"
}
],
"thresholds": "",
"timeFrom": null,
"timeShift": null,
"title": "集群个数",
"type": "singlestat",
"valueFontSize": "100%",
"valueMaps": [
{
"op": "=",
"text": "N/A",
"value": "null"
}
],
"valueName": "current"
},
{
"cacheTimeout": null,
"colorBackground": false,
"colorValue": true,
"colors": [
"#299c46",
"rgba(237, 129, 40, 0.89)",
"#d44a3a"
],
"datasource": null,
"description": "集群节点数量",
"format": "none",
"gauge": {
"maxValue": 100,
"minValue": 0,
"show": false,
"thresholdLabels": false,
"thresholdMarkers": true
},
"gridPos": {
"h": 3,
"w": 5,
"x": 5,
"y": 0
},
"id": 4,
"interval": null,
"links": [],
"mappingType": 1,
"mappingTypes": [
{
"name": "value to text",
"value": 1
},
{
"name": "range to text",
"value": 2
}
],
"maxDataPoints": 100,
"nullPointMode": "connected",
"nullText": null,
"postfix": "",
"postfixFontSize": "50%",
"prefix": "",
"prefixFontSize": "50%",
"rangeMaps": [
{
"from": "null",
"text": "N/A",
"to": "null"
}
],
"sparkline": {
"fillColor": "rgba(31, 118, 189, 0.18)",
"full": false,
"lineColor": "rgb(31, 120, 193)",
"show": false,
"ymax": null,
"ymin": null
},
"tableColumn": "",
"targets": [
{
"expr": "count(redis_up{cluster=~"$cluster"})",
"interval": "",
"legendFormat": "",
"refId": "A"
}
],
"thresholds": "",
"timeFrom": null,
"timeShift": null,
"title": "集群节点数",
"type": "singlestat",
"valueFontSize": "100%",
"valueMaps": [
{
"op": "=",
"text": "N/A",
"value": "null"
}
],
"valueName": "current"
},
{
"cacheTimeout": null,
"colorBackground": false,
"colorValue": true,
"colors": [
"#299c46",
"rgba(237, 129, 40, 0.89)",
"#d44a3a"
],
"datasource": null,
"description": "集群活跃节点数量",
"format": "none",
"gauge": {
"maxValue": 100,
"minValue": 0,
"show": false,
"thresholdLabels": false,
"thresholdMarkers": true
},
"gridPos": {
"h": 3,
"w": 4,
"x": 10,
"y": 0
},
"id": 6,
"interval": null,
"links": [],
"mappingType": 1,
"mappingTypes": [
{
"name": "value to text",
"value": 1
},
{
"name": "range to text",
"value": 2
}
],
"maxDataPoints": 100,
"nullPointMode": "connected",
"nullText": null,
"postfix": "",
"postfixFontSize": "50%",
"prefix": "",
"prefixFontSize": "50%",
"rangeMaps": [
{
"from": "null",
"text": "N/A",
"to": "null"
}
],
"sparkline": {
"fillColor": "rgba(31, 118, 189, 0.18)",
"full": false,
"lineColor": "rgb(31, 120, 193)",
"show": false,
"ymax": null,
"ymin": null
},
"tableColumn": "",
"targets": [
{
"expr": "count(redis_up{cluster=~"$cluster"}>0)",
"interval": "",
"legendFormat": "",
"refId": "A"
}
],
"thresholds": "",
"timeFrom": null,
"timeShift": null,
"title": "集群活跃节点数",
"type": "singlestat",
"valueFontSize": "100%",
"valueMaps": [
{
"op": "=",
"text": "N/A",
"value": "null"
}
],
"valueName": "current"
},
{
"cacheTimeout": null,
"colorBackground": false,
"colorPrefix": false,
"colorValue": true,
"colors": [
"#299c46",
"rgba(237, 129, 40, 0.89)",
"#d44a3a"
],
"datasource": null,
"description": "主节点数量",
"format": "none",
"gauge": {
"maxValue": 100,
"minValue": 0,
"show": false,
"thresholdLabels": false,
"thresholdMarkers": true
},
"gridPos": {
"h": 3,
"w": 5,
"x": 14,
"y": 0
},
"id": 10,
"interval": null,
"links": [],
"mappingType": 1,
"mappingTypes": [
{
"name": "value to text",
"value": 1
},
{
"name": "range to text",
"value": 2
}
],
"maxDataPoints": 100,
"nullPointMode": "connected",
"nullText": null,
"postfix": "",
"postfixFontSize": "50%",
"prefix": "",
"prefixFontSize": "50%",
"rangeMaps": [
{
"from": "null",
"text": "N/A",
"to": "null"
}
],
"sparkline": {
"fillColor": "rgba(31, 118, 189, 0.18)",
"full": false,
"lineColor": "rgb(31, 120, 193)",
"show": false,
"ymax": null,
"ymin": null
},
"tableColumn": "",
"targets": [
{
"expr": "count(redis_instance_info{cluster=~"$cluster", role="master"})",
"interval": "",
"legendFormat": "",
"refId": "A"
}
],
"thresholds": "",
"timeFrom": null,
"timeShift": null,
"title": "主节点个数",
"type": "singlestat",
"valueFontSize": "100%",
"valueMaps": [
{
"op": "=",
"text": "N/A",
"value": "null"
}
],
"valueName": "current"
},
{
"cacheTimeout": null,
"colorBackground": false,
"colorValue": true,
"colors": [
"#299c46",
"rgba(237, 129, 40, 0.89)",
"#d44a3a"
],
"datasource": null,
"description": "从节点数量",
"format": "none",
"gauge": {
"maxValue": 100,
"minValue": 0,
"show": false,
"thresholdLabels": false,
"thresholdMarkers": true
},
"gridPos": {
"h": 3,
"w": 5,
"x": 19,
"y": 0
},
"id": 12,
"interval": null,
"links": [],
"mappingType": 1,
"mappingTypes": [
{
"name": "value to text",
"value": 1
},
{
"name": "range to text",
"value": 2
}
],
"maxDataPoints": 100,
"nullPointMode": "connected",
"nullText": null,
"postfix": "",
"postfixFontSize": "50%",
"prefix": "",
"prefixFontSize": "50%",
"rangeMaps": [
{
"from": "null",
"text": "N/A",
"to": "null"
}
],
"sparkline": {
"fillColor": "rgba(31, 118, 189, 0.18)",
"full": false,
"lineColor": "rgb(31, 120, 193)",
"show": false,
"ymax": null,
"ymin": null
},
"tableColumn": "",
"targets": [
{
"expr": "count(redis_instance_info{cluster=~"$cluster", role="slave"})",
"interval": "",
"legendFormat": "",
"refId": "A"
}
],
"thresholds": "",
"timeFrom": null,
"timeShift": null,
"title": "从节点个数",
"type": "singlestat",
"valueFontSize": "100%",
"valueMaps": [
{
"op": "=",
"text": "N/A",
"value": "null"
}
],
"valueName": "current"
},
{
"aliasColors": {},
"bars": false,
"dashLength": 10,
"dashes": false,
"datasource": null,
"description": "Redus Cluster OPS指标",
"fill": 1,
"fillGradient": 0,
"gridPos": {
"h": 8,
"w": 12,
"x": 0,
"y": 3
},
"hiddenSeries": false,
"id": 16,
"legend": {
"avg": false,
"current": false,
"max": false,
"min": false,
"show": true,
"total": false,
"values": false
},
"lines": true,
"linewidth": 1,
"nullPointMode": "null",
"options": {
"dataLinks": []
},
"percentage": false,
"pointradius": 2,
"points": false,
"renderer": "flot",
"seriesOverrides": [],
"spaceLength": 10,
"stack": false,
"steppedLine": false,
"targets": [
{
"expr": "ceil(sum(rate(redis_commands_processed_total{cluster=~"$cluster",instance=~"$master"}[$interval])) by (cluster))",
"interval": "5s",
"legendFormat": "{{cluster}}",
"refId": "A"
}
],
"thresholds": [],
"timeFrom": null,
"timeRegions": [],
"timeShift": null,
"title": "Redis Cluster OPS",
"tooltip": {
"shared": true,
"sort": 0,
"value_type": "individual"
},
"type": "graph",
"xaxis": {
"buckets": null,
"mode": "time",
"name": null,
"show": true,
"values": []
},
"yaxes": [
{
"format": "short",
"label": null,
"logBase": 1,
"max": null,
"min": null,
"show": true
},
{
"format": "short",
"label": null,
"logBase": 1,
"max": null,
"min": null,
"show": true
}
],
"yaxis": {
"align": false,
"alignLevel": null
}
},
{
"aliasColors": {},
"bars": false,
"dashLength": 10,
"dashes": false,
"datasource": null,
"description": "Redis 内存使用大小值",
"fill": 1,
"fillGradient": 0,
"gridPos": {
"h": 8,
"w": 12,
"x": 12,
"y": 3
},
"hiddenSeries": false,
"id": 18,
"legend": {
"avg": false,
"current": false,
"max": false,
"min": false,
"show": true,
"total": false,
"values": false
},
"lines": true,
"linewidth": 1,
"nullPointMode": "null",
"options": {
"dataLinks": []
},
"percentage": false,
"pointradius": 2,
"points": false,
"renderer": "flot",
"seriesOverrides": [],
"spaceLength": 10,
"stack": false,
"steppedLine": false,
"targets": [
{
"expr": "redis_memory_used_bytes{instance=~"$instance"} ",
"interval": "5s",
"legendFormat": "{{instance}}",
"refId": "A"
}
],
"thresholds": [],
"timeFrom": null,
"timeRegions": [],
"timeShift": null,
"title": "Redis 内存使用大小",
"tooltip": {
"shared": true,
"sort": 0,
"value_type": "individual"
},
"type": "graph",
"xaxis": {
"buckets": null,
"mode": "time",
"name": null,
"show": true,
"values": []
},
"yaxes": [
{
"format": "bytes",
"label": null,
"logBase": 1,
"max": null,
"min": null,
"show": true
},
{
"format": "short",
"label": null,
"logBase": 1,
"max": null,
"min": null,
"show": true
}
],
"yaxis": {
"align": false,
"alignLevel": null
}
},
{
"aliasColors": {},
"bars": false,
"dashLength": 10,
"dashes": false,
"datasource": null,
"description": "Redis Server CPU使用率",
"fill": 1,
"fillGradient": 0,
"gridPos": {
"h": 8,
"w": 12,
"x": 0,
"y": 11
},
"hiddenSeries": false,
"id": 14,
"legend": {
"avg": false,
"current": false,
"max": false,
"min": false,
"show": true,
"total": false,
"values": false
},
"lines": true,
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"nullPointMode": "null",
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},
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},
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},
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]
},
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"to": "now"
},
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]
},
"timezone": "",
"title": "Redis_Cluster_V1.35",
"uid": "5FfBHG3Zz",
"variables": {
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},
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}
②：不同密码多实例抓取，因为使用的是 >1.x 的redis_exporter [v1.3.5]，不支持多实例。因为一个export只能指定一个密码，如果想进行多实例不同密码抓取的话，所以需要在Prometheus配置多个redis_exporter，集群信息为：
3节点无从
192.168.163.132、133、134 -- 6379 密码 abc
192.168.163.132、133、134 -- 6380 密码 cba
prometheus.yml：
global:
scrape_interval: 10s # Set the scrape interval to every 15 seconds. Default is every 1 minute.
evaluation_interval: 10s # Evaluate rules every 15 seconds. The default is every 1 minute.
alerting:
alertmanagers:
- static_configs:
- targets:
# - alertmanager:9093
rule_files:
# - "first_rules.yml"
# - "second_rules.yml"
scrape_configs:
- job_name: 'prometheus'
static_configs:
- targets: ['192.168.163.132:9099']
- job_name: 'node_exporter'
scrape_interval: 1s
file_sd_configs:
- files:
- targets/node/*.yml
refresh_interval: 10s
relabel_configs:
- action: replace
source_labels: ['__address__']
regex: (.*):(.*)
replacement: $1
target_label: hostname
- action: labeldrop
regex: __meta_filepath
- job_name: 'redis_exporter_A'
scrape_interval: 1s
file_sd_configs:
- files:
- targets/redis/A*.yml
metrics_path: /scrape
relabel_configs:
- action: replace
source_labels: ['__address__']
regex: (.*):(.*)
replacement: $1
target_label: hostip
- source_labels: [__address__]
target_label: __param_target
- source_labels: [__param_target]
target_label: instance
- target_label: __address__
replacement: 192.168.163.132:9123
- job_name: 'redis_exporter_B'
scrape_interval: 1s
file_sd_configs:
- files:
- targets/redis/B*.yml
metrics_path: /scrape
relabel_configs:
- action: replace
source_labels: ['__address__']
regex: (.*):(.*)
replacement: $1
target_label: hostip
- source_labels: [__address__]
target_label: __param_target
- source_labels: [__param_target]
target_label: instance
- target_label: __address__
replacement: 192.168.163.132:9124
targets/redis/*.yml：
# ls -lh /etc/prometheus/targets/redis/A*.yml
-rw-r--r-- 1 root root 121 4月 18 13:14 /etc/prometheus/targets/redis/Atest2_6379_redis_exporter.yml
-rw-r--r-- 1 root root 121 4月 18 13:14 /etc/prometheus/targets/redis/Atest3_6379_redis_exporter.yml
-rw-r--r-- 1 root root 121 4月 18 13:14 /etc/prometheus/targets/redis/Atest4_6379_redis_exporter.yml
# ls -lh /etc/prometheus/targets/redis/B*.yml
-rw-r--r-- 1 root root 121 4月 18 13:14 /etc/prometheus/targets/redis/Btest2_6380_redis_exporter.yml
-rw-r--r-- 1 root root 121 4月 18 13:15 /etc/prometheus/targets/redis/Btest3_6380_redis_exporter.yml
-rw-r--r-- 1 root root 121 4月 18 13:15 /etc/prometheus/targets/redis/Btest4_6380_redis_exporter.yml
# cat /etc/prometheus/targets/redis/Atest2_6379_redis_exporter.yml
[
{
"targets": [ "192.168.163.132:6379"],
"labels": {"env":"test","cluster":"test_one","alias":"test2"}
}
]
# cat /etc/prometheus/targets/redis/Atest3_6379_redis_exporter.yml
[
{
"targets": [ "192.168.163.133:6379"],
"labels": {"env":"test","cluster":"test_one","alias":"test3"}
}
]
# cat /etc/prometheus/targets/redis/Atest4_6379_redis_exporter.yml
[
{
"targets": [ "192.168.163.134:6379"],
"labels": {"env":"test","cluster":"test_one","alias":"test4"}
}
]
# cat /etc/prometheus/targets/redis/Btest2_6380_redis_exporter.yml
[
{
"targets": [ "192.168.163.132:6380"],
"labels": {"env":"test","cluster":"test_two","alias":"test2"}
}
]
# cat /etc/prometheus/targets/redis/Btest3_6380_redis_exporter.yml
[
{
"targets": [ "192.168.163.133:6380"],
"labels": {"env":"test","cluster":"test_two","alias":"test3"}
}
]
# cat /etc/prometheus/targets/redis/Btest4_6380_redis_exporter.yml
[
{
"targets": [ "192.168.163.134:6380"],
"labels": {"env":"test","cluster":"test_two","alias":"test4"}
}
]
以后如果有相关的实例集群包括主从加进来，只要新增2类exporter文件即可。最后开启exporter：
#指定节点执行 redis_exporter:
./redis_exporter -redis-only-metrics -redis.password abc -web.listen-address=:9123
#指定节点执行 redis_exporter:
./redis_exporter -redis-only-metrics -redis.password cba -web.listen-address=:9124
最后配置Grafana，效果和①一样，唯一的区别就是②开多个exporter。这样会导致一个问题：每次增加不同密码的节点都会修改Prometheus配置文件，既不安全也不方便。可以通过下面方法来实现多实例不同密码抓取。按照编写导出器的最佳实践，需要像nodes_exporter一样在不同实例的主机上安装和开启redis_exporter，即为每个redis instance开启一个exporter。集群信息为：
集群1：密码 cc
M:
192.168.163.132:15389
192.168.163.133:15389
192.168.163.134:15389
S:
192.168.163.132:15489
192.168.163.133:15489
192.168.163.134:15489
集群2：密码abc
M:
192.168.163.132:6379
192.168.163.133:6379
192.168.163.134:6379
S:
192.168.163.132:6381
192.168.163.133:6381
192.168.163.134:6381
prometheus.yml：
global:
scrape_interval: 10s # Set the scrape interval to every 15 seconds. Default is every 1 minute.
evaluation_interval: 10s # Evaluate rules every 15 seconds. The default is every 1 minute.
alerting:
alertmanagers:
- static_configs:
- targets:
# - alertmanager:9093
rule_files:
# - "first_rules.yml"
# - "second_rules.yml"
scrape_configs:
- job_name: 'prometheus'
static_configs:
- targets: ['192.168.163.132:9099']
- job_name: 'node_exporter'
scrape_interval: 1s
file_sd_configs:
- files:
- targets/node/node*.yml
refresh_interval: 10s
relabel_configs:
- action: replace
source_labels: ['__address__']
regex: (.*):(.*)
replacement: $1
target_label: hostname
- action: labeldrop
regex: __meta_filepath
- job_name: 'redis_exporter'
scrape_interval: 1s
file_sd_configs:
- files:
- targets/redis/redis*.yml
relabel_configs:
- action: replace
source_labels: ['__address__']
regex: (.*):(.*)
replacement: $1
target_label: hostip
- action: labeldrop
regex: __meta_filepath
targets/redis/redis*.yml
root@test2:/etc/prometheus/targets/redis# ls -lh redis*
-rw-r--r-- 1 prometheus prometheus 117 4月 18 22:02 redis_test2_15389_exporter.yml
-rw-r--r-- 1 prometheus prometheus 117 4月 18 22:05 redis_test2_15489_exporter.yml
-rw-r--r-- 1 prometheus prometheus 117 4月 18 22:02 redis_test3_15389_exporter.yml
-rw-r--r-- 1 prometheus prometheus 117 4月 18 22:05 redis_test3_15489_exporter.yml
-rw-r--r-- 1 prometheus prometheus 117 4月 18 22:03 redis_test4_15389_exporter.yml
-rw-r--r-- 1 prometheus prometheus 117 4月 18 22:05 redis_test4_15489_exporter.yml
root@test2:/etc/prometheus/targets/redis# cat redis_test2_15389_exporter.yml
[
{
"targets": ["192.168.163.132:9121"],
"labels": {"env":"test","cluster":"test","alias":"test2"}
}
]
root@test2:/etc/prometheus/targets/redis# cat redis_test3_15389_exporter.yml
[
{
"targets": ["192.168.163.133:9121"],
"labels": {"env":"test","cluster":"test","alias":"test3"}
}
]
root@test2:/etc/prometheus/targets/redis# cat redis_test4_15389_exporter.yml
[
{
"targets": ["192.168.163.134:9121"],
"labels": {"env":"test","cluster":"test","alias":"test4"}
}
]
root@test2:/etc/prometheus/targets/redis# cat redis_test2_15489_exporter.yml
[
{
"targets": ["192.168.163.132:9122"],
"labels": {"env":"test","cluster":"test","alias":"test2"}
}
]
root@test2:/etc/prometheus/targets/redis# cat redis_test3_15489_exporter.yml
[
{
"targets": ["192.168.163.133:9122"],
"labels": {"env":"test","cluster":"test","alias":"test3"}
}
]
root@test2:/etc/prometheus/targets/redis# cat redis_test4_15489_exporter.yml
[
{
"targets": ["192.168.163.134:9122"],
"labels": {"env":"test","cluster":"test","alias":"test4"}
}
]
通过文件服务发现，实现动态添加节点（exporter），一个Redis实例一个exporter，这里只开集群1的exporter，即在test2、test3、test4上各开启2个exporter，共6个exporter对应6个Redis实例，配置完成之后，可以直接到各个监控主机上启动redis_exporter：
test2:
./redis_exporter -redis-only-metrics -redis.addr 192.168.163.132:15389 -redis.password cc -web.listen-address=:9121
./redis_exporter -redis-only-metrics -redis.addr 192.168.163.132:15489 -redis.password cc -web.listen-address=:9122
test3:
./redis_exporter -redis-only-metrics -redis.addr 192.168.163.133:15389 -redis.password cc -web.listen-address=:9121
./redis_exporter -redis-only-metrics -redis.addr 192.168.163.133:15489 -redis.password cc -web.listen-address=:9122
test4:
./redis_exporter -redis-only-metrics -redis.addr 192.168.163.134:15389 -redis.password cc -web.listen-address=:9121
./redis_exporter -redis-only-metrics -redis.addr 192.168.163.134:15489 -redis.password cc -web.listen-address=:9122
最后配置Grafana，效果：
JSON Model：
{
"annotations": {
"list": [
{
"builtIn": 1,
"datasource": "-- Grafana --",
"enable": true,
"hide": true,
"iconColor": "rgba(0, 211, 255, 1)",
"name": "Annotations & Alerts",
"type": "dashboard"
}
]
},
"editable": true,
"gnetId": null,
"graphTooltip": 0,
"id": 13,
"iteration": 1587219062782,
"links": [],
"panels": [
{
"cacheTimeout": null,
"colorBackground": false,
"colorValue": true,
"colors": [
"#299c46",
"rgba(237, 129, 40, 0.89)",
"#d44a3a"
],
"datasource": null,
"description": "集群个数",
"format": "none",
"gauge": {
"maxValue": 100,
"minValue": 0,
"show": false,
"thresholdLabels": false,
"thresholdMarkers": true
},
"gridPos": {
"h": 3,
"w": 5,
"x": 0,
"y": 0
},
"id": 8,
"interval": null,
"links": [],
"mappingType": 1,
"mappingTypes": [
{
"name": "value to text",
"value": 1
},
{
"name": "range to text",
"value": 2
}
],
"maxDataPoints": 100,
"nullPointMode": "connected",
"nullText": null,
"postfix": "",
"postfixFontSize": "50%",
"prefix": "",
"prefixFontSize": "50%",
"rangeMaps": [
{
"from": "null",
"text": "N/A",
"to": "null"
}
],
"sparkline": {
"fillColor": "rgba(31, 118, 189, 0.18)",
"full": false,
"lineColor": "rgb(31, 120, 193)",
"show": false,
"ymax": null,
"ymin": null
},
"tableColumn": "",
"targets": [
{
"expr": "count(count(redis_up{cluster=~"$cluster"}>0) by (cluster))",
"interval": "",
"legendFormat": "",
"refId": "A"
}
],
"thresholds": "",
"timeFrom": null,
"timeShift": null,
"title": "集群个数",
"type": "singlestat",
"valueFontSize": "100%",
"valueMaps": [
{
"op": "=",
"text": "N/A",
"value": "null"
}
],
"valueName": "current"
},
{
"cacheTimeout": null,
"colorBackground": false,
"colorValue": true,
"colors": [
"#299c46",
"rgba(237, 129, 40, 0.89)",
"#d44a3a"
],
"datasource": null,
"description": "集群节点数量",
"format": "none",
"gauge": {
"maxValue": 100,
"minValue": 0,
"show": false,
"thresholdLabels": false,
"thresholdMarkers": true
},
"gridPos": {
"h": 3,
"w": 5,
"x": 5,
"y": 0
},
"id": 4,
"interval": null,
"links": [],
"mappingType": 1,
"mappingTypes": [
{
"name": "value to text",
"value": 1
},
{
"name": "range to text",
"value": 2
}
],
"maxDataPoints": 100,
"nullPointMode": "connected",
"nullText": null,
"postfix": "",
"postfixFontSize": "50%",
"prefix": "",
"prefixFontSize": "50%",
"rangeMaps": [
{
"from": "null",
"text": "N/A",
"to": "null"
}
],
"sparkline": {
"fillColor": "rgba(31, 118, 189, 0.18)",
"full": false,
"lineColor": "rgb(31, 120, 193)",
"show": false,
"ymax": null,
"ymin": null
},
"tableColumn": "",
"targets": [
{
"expr": "count(redis_up{cluster=~"$cluster"})",
"interval": "",
"legendFormat": "",
"refId": "A"
}
],
"thresholds": "",
"timeFrom": null,
"timeShift": null,
"title": "集群节点数",
"type": "singlestat",
"valueFontSize": "100%",
"valueMaps": [
{
"op": "=",
"text": "N/A",
"value": "null"
}
],
"valueName": "current"
},
{
"cacheTimeout": null,
"colorBackground": false,
"colorValue": true,
"colors": [
"#299c46",
"rgba(237, 129, 40, 0.89)",
"#d44a3a"
],
"datasource": null,
"description": "集群活跃节点数量",
"format": "none",
"gauge": {
"maxValue": 100,
"minValue": 0,
"show": false,
"thresholdLabels": false,
"thresholdMarkers": true
},
"gridPos": {
"h": 3,
"w": 4,
"x": 10,
"y": 0
},
"id": 6,
"interval": null,
"links": [],
"mappingType": 1,
"mappingTypes": [
{
"name": "value to text",
"value": 1
},
{
"name": "range to text",
"value": 2
}
],
"maxDataPoints": 100,
"nullPointMode": "connected",
"nullText": null,
"postfix": "",
"postfixFontSize": "50%",
"prefix": "",
"prefixFontSize": "50%",
"rangeMaps": [
{
"from": "null",
"text": "N/A",
"to": "null"
}
],
"sparkline": {
"fillColor": "rgba(31, 118, 189, 0.18)",
"full": false,
"lineColor": "rgb(31, 120, 193)",
"show": false,
"ymax": null,
"ymin": null
},
"tableColumn": "",
"targets": [
{
"expr": "count(redis_up{cluster=~"$cluster"}>0)",
"interval": "",
"legendFormat": "",
"refId": "A"
}
],
"thresholds": "",
"timeFrom": null,
"timeShift": null,
"title": "集群活跃节点数",
"type": "singlestat",
"valueFontSize": "100%",
"valueMaps": [
{
"op": "=",
"text": "N/A",
"value": "null"
}
],
"valueName": "current"
},
{
"cacheTimeout": null,
"colorBackground": false,
"colorPrefix": false,
"colorValue": true,
"colors": [
"#299c46",
"rgba(237, 129, 40, 0.89)",
"#d44a3a"
],
"datasource": null,
"description": "主节点数量",
"format": "none",
"gauge": {
"maxValue": 100,
"minValue": 0,
"show": false,
"thresholdLabels": false,
"thresholdMarkers": true
},
"gridPos": {
"h": 3,
"w": 5,
"x": 14,
"y": 0
},
"id": 10,
"interval": null,
"links": [],
"mappingType": 1,
"mappingTypes": [
{
"name": "value to text",
"value": 1
},
{
"name": "range to text",
"value": 2
}
],
"maxDataPoints": 100,
"nullPointMode": "connected",
"nullText": null,
"postfix": "",
"postfixFontSize": "50%",
"prefix": "",
"prefixFontSize": "50%",
"rangeMaps": [
{
"from": "null",
"text": "N/A",
"to": "null"
}
],
"sparkline": {
"fillColor": "rgba(31, 118, 189, 0.18)",
"full": false,
"lineColor": "rgb(31, 120, 193)",
"show": false,
"ymax": null,
"ymin": null
},
"tableColumn": "",
"targets": [
{
"expr": "count(redis_instance_info{cluster=~"$cluster", role="master"})",
"interval": "",
"legendFormat": "",
"refId": "A"
}
],
"thresholds": "",
"timeFrom": null,
"timeShift": null,
"title": "主节点个数",
"type": "singlestat",
"valueFontSize": "100%",
"valueMaps": [
{
"op": "=",
"text": "N/A",
"value": "null"
}
],
"valueName": "current"
},
{
"cacheTimeout": null,
"colorBackground": false,
"colorValue": true,
"colors": [
"#299c46",
"rgba(237, 129, 40, 0.89)",
"#d44a3a"
],
"datasource": null,
"description": "从节点数量",
"format": "none",
"gauge": {
"maxValue": 100,
"minValue": 0,
"show": false,
"thresholdLabels": false,
"thresholdMarkers": true
},
"gridPos": {
"h": 3,
"w": 5,
"x": 19,
"y": 0
},
"id": 12,
"interval": null,
"links": [],
"mappingType": 1,
"mappingTypes": [
{
"name": "value to text",
"value": 1
},
{
"name": "range to text",
"value": 2
}
],
"maxDataPoints": 100,
"nullPointMode": "connected",
"nullText": null,
"postfix": "",
"postfixFontSize": "50%",
"prefix": "",
"prefixFontSize": "50%",
"rangeMaps": [
{
"from": "null",
"text": "N/A",
"to": "null"
}
],
"sparkline": {
"fillColor": "rgba(31, 118, 189, 0.18)",
"full": false,
"lineColor": "rgb(31, 120, 193)",
"show": false,
"ymax": null,
"ymin": null
},
"tableColumn": "",
"targets": [
{
"expr": "count(redis_instance_info{cluster=~"$cluster", role="slave"})",
"interval": "",
"legendFormat": "",
"refId": "A"
}
],
"thresholds": "",
"timeFrom": null,
"timeShift": null,
"title": "从节点个数",
"type": "singlestat",
"valueFontSize": "100%",
"valueMaps": [
{
"op": "=",
"text": "N/A",
"value": "null"
}
],
"valueName": "current"
},
{
"aliasColors": {},
"bars": false,
"dashLength": 10,
"dashes": false,
"datasource": null,
"description": "Redus Cluster OPS指标",
"fill": 1,
"fillGradient": 0,
"gridPos": {
"h": 8,
"w": 12,
"x": 0,
"y": 3
},
"hiddenSeries": false,
"id": 16,
"legend": {
"avg": false,
"current": false,
"max": false,
"min": false,
"show": true,
"total": false,
"values": false
},
"lines": true,
"linewidth": 1,
"nullPointMode": "null",
"options": {
"dataLinks": []
},
"percentage": false,
"pointradius": 2,
"points": false,
"renderer": "flot",
"seriesOverrides": [],
"spaceLength": 10,
"stack": false,
"steppedLine": false,
"targets": [
{
"expr": "ceil(sum(rate(redis_commands_processed_total{cluster=~"$cluster",instance=~"$master"}[$interval])) by (cluster))",
"interval": "5s",
"legendFormat": "{{cluster}}",
"refId": "A"
}
],
"thresholds": [],
"timeFrom": null,
"timeRegions": [],
"timeShift": null,
"title": "Redis Cluster OPS",
"tooltip": {
"shared": true,
"sort": 0,
"value_type": "individual"
},
"type": "graph",
"xaxis": {
"buckets": null,
"mode": "time",
"name": null,
"show": true,
"values": []
},
"yaxes": [
{
"format": "short",
"label": null,
"logBase": 1,
"max": null,
"min": null,
"show": true
},
{
"format": "short",
"label": null,
"logBase": 1,
"max": null,
"min": null,
"show": true
}
],
"yaxis": {
"align": false,
"alignLevel": null
}
},
{
"aliasColors": {},
"bars": false,
"dashLength": 10,
"dashes": false,
"datasource": null,
"description": "Redis 内存使用大小值",
"fill": 1,
"fillGradient": 0,
"gridPos": {
"h": 8,
"w": 12,
"x": 12,
"y": 3
},
"hiddenSeries": false,
"id": 18,
"legend": {
"avg": false,
"current": false,
"max": false,
"min": false,
"show": true,
"total": false,
"values": false
},
"lines": true,
"linewidth": 1,
"nullPointMode": "null",
"options": {
"dataLinks": []
},
"percentage": false,
"pointradius": 2,
"points": false,
"renderer": "flot",
"seriesOverrides": [],
"spaceLength": 10,
"stack": false,
"steppedLine": false,
"targets": [
{
"expr": "redis_memory_used_bytes{instance=~"$instance"} ",
"interval": "5s",
"legendFormat": "{{instance}}",
"refId": "A"
}
],
"thresholds": [],
"timeFrom": null,
"timeRegions": [],
"timeShift": null,
"title": "Redis 内存使用大小",
"tooltip": {
"shared": true,
"sort": 0,
"value_type": "individual"
},
"type": "graph",
"xaxis": {
"buckets": null,
"mode": "time",
"name": null,
"show": true,
"values": []
},
"yaxes": [
{
"format": "bytes",
"label": null,
"logBase": 1,
"max": null,
"min": null,
"show": true
},
{
"format": "short",
"label": null,
"logBase": 1,
"max": null,
"min": null,
"show": true
}
],
"yaxis": {
"align": false,
"alignLevel": null
}
},
{
"aliasColors": {},
"bars": false,
"dashLength": 10,
"dashes": false,
"datasource": null,
"description": "Redis Server CPU使用率",
"fill": 1,
"fillGradient": 0,
"gridPos": {
"h": 8,
"w": 12,
"x": 0,
"y": 11
},
"hiddenSeries": false,
"id": 14,
"legend": {
"avg": false,
"current": false,
"max": false,
"min": false,
"show": true,
"total": false,
"values": false
},
"lines": true,
"linewidth": 1,
"nullPointMode": "null",
"options": {
"dataLinks": []
},
"percentage": false,
"pointradius": 2,
"points": false,
"renderer": "flot",
"seriesOverrides": [],
"spaceLength": 10,
"stack": false,
"steppedLine": false,
"targets": [
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"interval": "5s",
"legendFormat": "{{instance}}",
"refId": "A"
}
],
"thresholds": [],
"timeFrom": null,
"timeRegions": [],
"timeShift": null,
"title": "Redis CPU使用率",
"tooltip": {
"shared": true,
"sort": 0,
"value_type": "individual"
},
"type": "graph",
"xaxis": {
"buckets": null,
"mode": "time",
"name": null,
"show": true,
"values": []
},
"yaxes": [
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"show": true
},
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],
"yaxis": {
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"alignLevel": null
}
},
{
"aliasColors": {},
"bars": false,
"dashLength": 10,
"dashes": false,
"datasource": null,
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"fill": 1,
"fillGradient": 0,
"gridPos": {
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"w": 12,
"x": 12,
"y": 11
},
"hiddenSeries": false,
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},
"lines": true,
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"options": {
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},
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"pointradius": 2,
"points": false,
"renderer": "flot",
"seriesOverrides": [],
"spaceLength": 10,
"stack": false,
"steppedLine": false,
"targets": [
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"interval": "5s",
"legendFormat": "{{instance}}",
"refId": "A"
}
],
"thresholds": [],
"timeFrom": null,
"timeRegions": [],
"timeShift": null,
"title": "Redis 内存使用率",
"tooltip": {
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"sort": 0,
"value_type": "individual"
},
"type": "graph",
"xaxis": {
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"mode": "time",
"name": null,
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"yaxis": {
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"alignLevel": null
}
},
{
"aliasColors": {},
"bars": false,
"dashLength": 10,
"dashes": false,
"datasource": null,
"description": "各个节点系统CPU使用率",
"fill": 1,
"fillGradient": 0,
"gridPos": {
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"w": 12,
"x": 0,
"y": 19
},
"hiddenSeries": false,
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"values": false
},
"lines": true,
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"options": {
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},
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"pointradius": 2,
"points": false,
"renderer": "flot",
"seriesOverrides": [],
"spaceLength": 10,
"stack": false,
"steppedLine": false,
"targets": [
{
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"hide": true,
"interval": "",
"legendFormat": "{{mode}}",
"refId": "A"
},
{
"expr": "1 - avg by (hostname)(rate(node_cpu_seconds_total{hostname=~"$host", mode="idle"}[$interval]))",
"interval": "",
"legendFormat": "{{hostname}}",
"refId": "B"
}
],
"thresholds": [],
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"timeRegions": [],
"timeShift": null,
"title": "系统CPU使用率",
"tooltip": {
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"value_type": "individual"
},
"type": "graph",
"xaxis": {
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"yaxis": {
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"alignLevel": null
}
},
{
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"dashLength": 10,
"dashes": false,
"datasource": null,
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"fill": 1,
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"gridPos": {
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"y": 19
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"hiddenSeries": false,
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"points": false,
"renderer": "flot",
"seriesOverrides": [],
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"targets": [
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"hide": true,
"interval": "",
"legendFormat": "{{hostname}}",
"refId": "A"
},
{
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"hide": false,
"interval": "",
"legendFormat": "{{hostname}}",
"refId": "B"
}
],
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}
],
"yaxis": {
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"alignLevel": null
}
},
{
"aliasColors": {},
"bars": true,
"cacheTimeout": null,
"dashLength": 10,
"dashes": false,
"datasource": null,
"description": "各个节点系统磁盘使用率",
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"fillGradient": 0,
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"w": 12,
"x": 0,
"y": 27
},
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},
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"points": false,
"renderer": "flot",
"seriesOverrides": [],
"spaceLength": 10,
"stack": false,
"steppedLine": false,
"targets": [
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"refId": "A"
}
],
"thresholds": [],
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"timeRegions": [],
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"tooltip": {
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},
"type": "graph",
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"show": true,
"values": [
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},
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"show": true
},
{
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"max": null,
"min": null,
"show": true
}
],
"yaxis": {
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"alignLevel": null
}
},
{
"aliasColors": {},
"bars": false,
"dashLength": 10,
"dashes": false,
"datasource": null,
"description": "各个节点以及集群的 KEYS 总数",
"fill": 1,
"fillGradient": 0,
"gridPos": {
"h": 8,
"w": 12,
"x": 12,
"y": 27
},
"hiddenSeries": false,
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"legend": {
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"max": false,
"min": false,
"show": true,
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},
"lines": true,
"linewidth": 1,
"nullPointMode": "null",
"options": {
"dataLinks": []
},
"percentage": false,
"pointradius": 2,
"points": false,
"renderer": "flot",
"seriesOverrides": [],
"spaceLength": 10,
"stack": false,
"steppedLine": false,
"targets": [
{
"expr": "sum(redis_db_keys{instance=~"$master"}) by (instance,db)",
"interval": "",
"legendFormat": "{{instance}}",
"refId": "A"
},
{
"expr": "sum(redis_db_keys{instance=~"$master"}) by (cluster)",
"interval": "",
"legendFormat": "{{cluster}}_total",
"refId": "B"
}
],
"thresholds": [],
"timeFrom": null,
"timeRegions": [],
"timeShift": null,
"title": "KEYS 总数",
"tooltip": {
"shared": true,
"sort": 0,
"value_type": "individual"
},
"type": "graph",
"xaxis": {
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"mode": "time",
"name": null,
"show": true,
"values": []
},
"yaxes": [
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},
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"format": "short",
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"max": null,
"min": null,
"show": true
}
],
"yaxis": {
"align": false,
"alignLevel": null
}
},
{
"aliasColors": {},
"bars": false,
"dashLength": 10,
"dashes": false,
"datasource": null,
"description": "各个节点活跃连接数",
"fill": 1,
"fillGradient": 0,
"gridPos": {
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"w": 12,
"x": 0,
"y": 35
},
"hiddenSeries": false,
"id": 26,
"legend": {
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"max": false,
"min": false,
"show": true,
"total": false,
"values": false
},
"lines": true,
"linewidth": 1,
"nullPointMode": "null",
"options": {
"dataLinks": []
},
"percentage": false,
"pointradius": 2,
"points": false,
"renderer": "flot",
"seriesOverrides": [],
"spaceLength": 10,
"stack": false,
"steppedLine": false,
"targets": [
{
"expr": "redis_connected_clients{instance=~"$instance"}",
"interval": "",
"legendFormat": "{{hostip}}",
"refId": "A"
}
],
"thresholds": [],
"timeFrom": null,
"timeRegions": [],
"timeShift": null,
"title": "活跃连接数",
"tooltip": {
"shared": true,
"sort": 0,
"value_type": "individual"
},
"type": "graph",
"xaxis": {
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"mode": "time",
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},
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"show": true
},
{
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"max": null,
"min": null,
"show": true
}
],
"yaxis": {
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"alignLevel": null
}
},
{
"aliasColors": {},
"bars": false,
"dashLength": 10,
"dashes": false,
"datasource": null,
"description": "各个节点内存碎片率",
"fill": 1,
"fillGradient": 0,
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},
"hiddenSeries": false,
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},
"lines": true,
"linewidth": 1,
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"options": {
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},
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"pointradius": 2,
"points": false,
"renderer": "flot",
"seriesOverrides": [],
"spaceLength": 10,
"stack": false,
"steppedLine": false,
"targets": [
{
"expr": "redis_mem_fragmentation_ratio{instance=~"$instance"}",
"interval": "",
"legendFormat": "{{instance}}",
"refId": "A"
}
],
"thresholds": [],
"timeFrom": null,
"timeRegions": [],
"timeShift": null,
"title": "内存碎片率",
"tooltip": {
"shared": true,
"sort": 0,
"value_type": "individual"
},
"type": "graph",
"xaxis": {
"buckets": null,
"mode": "time",
"name": null,
"show": true,
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},
"yaxes": [
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},
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}
],
"yaxis": {
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}
},
{
"aliasColors": {},
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"dashLength": 10,
"dashes": false,
"datasource": null,
"description": "各个节点 的负载",
"fill": 1,
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},
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"max": false,
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},
"lines": true,
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"options": {
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},
"percentage": false,
"pointradius": 2,
"points": false,
"renderer": "flot",
"seriesOverrides": [],
"spaceLength": 10,
"stack": false,
"steppedLine": false,
"targets": [
{
"expr": "node_load1{hostname=~"$host"}",
"interval": "",
"legendFormat": "{{hostname}}",
"refId": "A"
}
],
"thresholds": [],
"timeFrom": null,
"timeRegions": [],
"timeShift": null,
"title": "负载（Load）",
"tooltip": {
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"sort": 0,
"value_type": "individual"
},
"type": "graph",
"xaxis": {
"buckets": null,
"mode": "time",
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"values": []
},
"yaxes": [
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},
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"max": null,
"min": null,
"show": true
}
],
"yaxis": {
"align": false,
"alignLevel": null
}
}
],
"refresh": "5s",
"schemaVersion": 22,
"style": "dark",
"tags": [],
"templating": {
"list": [
{
"auto": true,
"auto_count": 100,
"auto_min": "1s",
"current": {
"selected": true,
"text": "5s",
"value": "5s"
},
"hide": 0,
"label": "interval",
"name": "interval",
"options": [
{
"selected": false,
"text": "auto",
"value": "$__auto_interval_interval"
},
{
"selected": true,
"text": "5s",
"value": "5s"
},
{
"selected": false,
"text": "30s",
"value": "30s"
},
{
"selected": false,
"text": "1m",
"value": "1m"
},
{
"selected": false,
"text": "10m",
"value": "10m"
},
{
"selected": false,
"text": "30m",
"value": "30m"
},
{
"selected": false,
"text": "1h",
"value": "1h"
},
{
"selected": false,
"text": "6h",
"value": "6h"
},
{
"selected": false,
"text": "12h",
"value": "12h"
},
{
"selected": false,
"text": "1d",
"value": "1d"
}
],
"query": "5s,30s,1m,10m,30m,1h,6h,12h,1d",
"refresh": 2,
"skipUrlSync": false,
"type": "interval"
},
{
"allValue": null,
"current": {
"text": "All",
"value": [
"$__all"
]
},
"datasource": "Prometheus",
"definition": "label_values(redis_up,cluster)",
"hide": 0,
"includeAll": true,
"index": -1,
"label": "Cluster",
"multi": true,
"name": "cluster",
"options": [],
"query": "label_values(redis_up,cluster)",
"refresh": 1,
"regex": "",
"skipUrlSync": false,
"sort": 0,
"tagValuesQuery": "",
"tags": [],
"tagsQuery": "",
"type": "query",
"useTags": false
},
{
"allValue": null,
"current": {
"text": "All",
"value": [
"$__all"
]
},
"datasource": "Prometheus",
"definition": "label_values(redis_instance_info,role)",
"hide": 0,
"includeAll": true,
"index": -1,
"label": "Role",
"multi": true,
"name": "role",
"options": [],
"query": "label_values(redis_instance_info,role)",
"refresh": 1,
"regex": "",
"skipUrlSync": false,
"sort": 0,
"tagValuesQuery": "",
"tags": [],
"tagsQuery": "",
"type": "query",
"useTags": false
},
{
"allValue": null,
"current": {
"text": "All",
"value": [
"$__all"
]
},
"datasource": "Prometheus",
"definition": "label_values(redis_instance_info{cluster=~"$cluster",role=~"$role"},instance)",
"hide": 2,
"includeAll": true,
"index": -1,
"label": "instance",
"multi": true,
"name": "instance",
"options": [],
"query": "label_values(redis_instance_info{cluster=~"$cluster",role=~"$role"},instance)",
"refresh": 1,
"regex": "",
"skipUrlSync": false,
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"tagValuesQuery": "",
"tags": [],
"tagsQuery": "",
"type": "query",
"useTags": false
},
{
"allValue": null,
"current": {
"text": "All",
"value": [
"$__all"
]
},
"datasource": "Prometheus",
"definition": "label_values(redis_instance_info{cluster=~"$cluster",role="master"},instance)",
"hide": 2,
"includeAll": true,
"index": -1,
"label": "master",
"multi": true,
"name": "master",
"options": [],
"query": "label_values(redis_instance_info{cluster=~"$cluster",role="master"},instance)",
"refresh": 1,
"regex": "",
"skipUrlSync": false,
"sort": 0,
"tagValuesQuery": "",
"tags": [],
"tagsQuery": "",
"type": "query",
"useTags": false
},
{
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"current": {
"text": "All",
"value": [
"$__all"
]
},
"datasource": "Prometheus",
"definition": "label_values(redis_up{cluster=~"$cluster"}, hostip)",
"hide": 2,
"includeAll": true,
"index": -1,
"label": "host",
"multi": true,
"name": "host",
"options": [],
"query": "label_values(redis_up{cluster=~"$cluster"}, hostip)",
"refresh": 1,
"regex": "",
"skipUrlSync": false,
"sort": 0,
"tagValuesQuery": "",
"tags": [],
"tagsQuery": "",
"type": "query",
"useTags": false
}
]
},
"time": {
"from": "now-5m",
"to": "now"
},
"timepicker": {
"refresh_intervals": [
"5s",
"10s",
"30s",
"1m",
"5m",
"15m",
"30m",
"1h",
"2h",
"1d"
]
},
"timezone": "",
"title": "Redis_Cluster_V1.35",
"uid": "5FfBHG3Zz",
"variables": {
"list": []
},
"version": 4
}
③：旧版本redis_exporter [v0.34.1]支持多实例不同密码，集群信息：
集群1：密码 cc
M:
192.168.163.132:15389
192.168.163.133:15389
192.168.163.134:15389
S:
192.168.163.132:15489
192.168.163.133:15489
192.168.163.134:15489
集群2：密码abc
M:
192.168.163.132:6379
192.168.163.133:6379
192.168.163.134:6379
S:
192.168.163.132:6381
192.168.163.133:6381
192.168.163.134:6381
prometheus.yml：
global:
scrape_interval: 15s # Set the scrape interval to every 15 seconds. Default is every 1 minute.
evaluation_interval: 15s # Evaluate rules every 15 seconds. The default is every 1 minute.
alerting:
alertmanagers:
- static_configs:
- targets:
# - alertmanager:9093
rule_files:
# - "first_rules.yml"
# - "second_rules.yml"
scrape_configs:
- job_name: 'prometheus'
static_configs:
- targets: ['192.168.163.132:9099']
- job_name: 'node_exporter'
scrape_interval: 1s
file_sd_configs:
- files:
- targets/node/nodes-instances.json
refresh_interval: 10s
relabel_configs:
- action: replace
source_labels: ['__address__']
regex: (.*):(.*)
replacement: $1
target_label: hostip
- action: labeldrop
regex: __meta_filepath
- job_name: 'redis_exporter'
scrape_interval: 1s
static_configs:
- targets: ['192.168.163.132:9128']
redis_exporter直接用命令行启动：对应的参数有-redis.addr、-redis.alias、-redis.password：
# ./redis_exporter -redis-only-metrics -redis.addr 192.168.163.132:15389,192.168.163.133:15389,192.168.163.134:15389,192.168.163.132:15489,192.168.163.133:15489,192.168.163.134:15489,192.168.163.132:6379,192.168.163.133:6379,192.168.163.134:6379,192.168.163.132:6381,192.168.163.133:6381,192.168.163.134:6381 -redis.alias test,test,test,test,test,test,test123,test123,test123,test123,test123,test123 -redis.password cc,cc,cc,cc,cc,cc,abc,abc,abc,abc,abc,abc -web.listen-address :9128
INFO[0000] Redis Metrics Exporter v0.34.1 build date: 2019-05-09-15:42:21 sha1: 1c168d07eff09e64efb18600a35664d6666926e6 Go: go1.12.5
INFO[0000] Providing metrics at :9128/metrics
INFO[0000] Connecting to redis hosts: []string{"192.168.163.132:15389", "192.168.163.133:15389", "192.168.163.134:15389", "192.168.163.132:15489", "192.168.163.133:15489", "192.168.163.134:15489", "192.168.163.132:6379", "192.168.163.133:6379", "192.168.163.134:6379", "192.168.163.132:6381", "192.168.163.133:6381", "192.168.163.134:6381"}
INFO[0000] Using alias: []string{"test", "test", "test", "test", "test", "test", "test123", "test123", "test123", "test123", "test123", "test123"}
注意：参数、密码和实例的他们是一一对应的。最后配置Grafana，效果：
JSON Model：
{
"annotations": {
"list": [
{
"builtIn": 1,
"datasource": "-- Grafana --",
"enable": true,
"hide": true,
"iconColor": "rgba(0, 211, 255, 1)",
"name": "Annotations & Alerts",
"type": "dashboard"
}
]
},
"editable": true,
"gnetId": null,
"graphTooltip": 0,
"id": 14,
"iteration": 1587221739977,
"links": [],
"panels": [
{
"cacheTimeout": null,
"colorBackground": false,
"colorValue": true,
"colors": [
"#299c46",
"rgba(237, 129, 40, 0.89)",
"#d44a3a"
],
"datasource": null,
"description": "集群个数",
"format": "none",
"gauge": {
"maxValue": 100,
"minValue": 0,
"show": false,
"thresholdLabels": false,
"thresholdMarkers": true
},
"gridPos": {
"h": 3,
"w": 5,
"x": 0,
"y": 0
},
"id": 8,
"interval": null,
"links": [],
"mappingType": 1,
"mappingTypes": [
{
"name": "value to text",
"value": 1
},
{
"name": "range to text",
"value": 2
}
],
"maxDataPoints": 100,
"nullPointMode": "connected",
"nullText": null,
"postfix": "",
"postfixFontSize": "50%",
"prefix": "",
"prefixFontSize": "50%",
"rangeMaps": [
{
"from": "null",
"text": "N/A",
"to": "null"
}
],
"sparkline": {
"fillColor": "rgba(31, 118, 189, 0.18)",
"full": false,
"lineColor": "rgb(31, 120, 193)",
"show": false,
"ymax": null,
"ymin": null
},
"tableColumn": "",
"targets": [
{
"expr": "count(count(redis_up{alias=~"$cluster"}>0) by (alias))",
"interval": "",
"legendFormat": "",
"refId": "A"
}
],
"thresholds": "",
"timeFrom": null,
"timeShift": null,
"title": "集群个数",
"type": "singlestat",
"valueFontSize": "100%",
"valueMaps": [
{
"op": "=",
"text": "N/A",
"value": "null"
}
],
"valueName": "current"
},
{
"cacheTimeout": null,
"colorBackground": false,
"colorValue": true,
"colors": [
"#299c46",
"rgba(237, 129, 40, 0.89)",
"#d44a3a"
],
"datasource": null,
"description": "集群节点数量",
"format": "none",
"gauge": {
"maxValue": 100,
"minValue": 0,
"show": false,
"thresholdLabels": false,
"thresholdMarkers": true
},
"gridPos": {
"h": 3,
"w": 5,
"x": 5,
"y": 0
},
"id": 4,
"interval": null,
"links": [],
"mappingType": 1,
"mappingTypes": [
{
"name": "value to text",
"value": 1
},
{
"name": "range to text",
"value": 2
}
],
"maxDataPoints": 100,
"nullPointMode": "connected",
"nullText": null,
"postfix": "",
"postfixFontSize": "50%",
"prefix": "",
"prefixFontSize": "50%",
"rangeMaps": [
{
"from": "null",
"text": "N/A",
"to": "null"
}
],
"sparkline": {
"fillColor": "rgba(31, 118, 189, 0.18)",
"full": false,
"lineColor": "rgb(31, 120, 193)",
"show": false,
"ymax": null,
"ymin": null
},
"tableColumn": "",
"targets": [
{
"expr": "count(redis_instance_info{alias=~"$cluster"})",
"interval": "",
"legendFormat": "",
"refId": "A"
}
],
"thresholds": "",
"timeFrom": null,
"timeShift": null,
"title": "集群节点数",
"type": "singlestat",
"valueFontSize": "100%",
"valueMaps": [
{
"op": "=",
"text": "N/A",
"value": "null"
}
],
"valueName": "current"
},
{
"cacheTimeout": null,
"colorBackground": false,
"colorValue": true,
"colors": [
"#299c46",
"rgba(237, 129, 40, 0.89)",
"#d44a3a"
],
"datasource": null,
"description": "集群活跃节点数量",
"format": "none",
"gauge": {
"maxValue": 100,
"minValue": 0,
"show": false,
"thresholdLabels": false,
"thresholdMarkers": true
},
"gridPos": {
"h": 3,
"w": 4,
"x": 10,
"y": 0
},
"id": 6,
"interval": null,
"links": [],
"mappingType": 1,
"mappingTypes": [
{
"name": "value to text",
"value": 1
},
{
"name": "range to text",
"value": 2
}
],
"maxDataPoints": 100,
"nullPointMode": "connected",
"nullText": null,
"postfix": "",
"postfixFontSize": "50%",
"prefix": "",
"prefixFontSize": "50%",
"rangeMaps": [
{
"from": "null",
"text": "N/A",
"to": "null"
}
],
"sparkline": {
"fillColor": "rgba(31, 118, 189, 0.18)",
"full": false,
"lineColor": "rgb(31, 120, 193)",
"show": false,
"ymax": null,
"ymin": null
},
"tableColumn": "",
"targets": [
{
"expr": "count(redis_up{alias=~"$cluster"}>0)",
"interval": "",
"legendFormat": "",
"refId": "A"
}
],
"thresholds": "",
"timeFrom": null,
"timeShift": null,
"title": "集群活跃节点数",
"type": "singlestat",
"valueFontSize": "100%",
"valueMaps": [
{
"op": "=",
"text": "N/A",
"value": "null"
}
],
"valueName": "current"
},
{
"cacheTimeout": null,
"colorBackground": false,
"colorPrefix": false,
"colorValue": true,
"colors": [
"#299c46",
"rgba(237, 129, 40, 0.89)",
"#d44a3a"
],
"datasource": null,
"description": "主节点数量",
"format": "none",
"gauge": {
"maxValue": 100,
"minValue": 0,
"show": false,
"thresholdLabels": false,
"thresholdMarkers": true
},
"gridPos": {
"h": 3,
"w": 5,
"x": 14,
"y": 0
},
"id": 10,
"interval": null,
"links": [],
"mappingType": 1,
"mappingTypes": [
{
"name": "value to text",
"value": 1
},
{
"name": "range to text",
"value": 2
}
],
"maxDataPoints": 100,
"nullPointMode": "connected",
"nullText": null,
"postfix": "",
"postfixFontSize": "50%",
"prefix": "",
"prefixFontSize": "50%",
"rangeMaps": [
{
"from": "null",
"text": "N/A",
"to": "null"
}
],
"sparkline": {
"fillColor": "rgba(31, 118, 189, 0.18)",
"full": false,
"lineColor": "rgb(31, 120, 193)",
"show": false,
"ymax": null,
"ymin": null
},
"tableColumn": "",
"targets": [
{
"expr": "count(redis_instance_info{alias=~"$cluster", role="master"})",
"interval": "",
"legendFormat": "",
"refId": "A"
}
],
"thresholds": "",
"timeFrom": null,
"timeShift": null,
"title": "主节点个数",
"type": "singlestat",
"valueFontSize": "100%",
"valueMaps": [
{
"op": "=",
"text": "N/A",
"value": "null"
}
],
"valueName": "current"
},
{
"cacheTimeout": null,
"colorBackground": false,
"colorValue": true,
"colors": [
"#299c46",
"rgba(237, 129, 40, 0.89)",
"#d44a3a"
],
"datasource": null,
"description": "从节点数量",
"format": "none",
"gauge": {
"maxValue": 100,
"minValue": 0,
"show": false,
"thresholdLabels": false,
"thresholdMarkers": true
},
"gridPos": {
"h": 3,
"w": 5,
"x": 19,
"y": 0
},
"id": 12,
"interval": null,
"links": [],
"mappingType": 1,
"mappingTypes": [
{
"name": "value to text",
"value": 1
},
{
"name": "range to text",
"value": 2
}
],
"maxDataPoints": 100,
"nullPointMode": "connected",
"nullText": null,
"postfix": "",
"postfixFontSize": "50%",
"prefix": "",
"prefixFontSize": "50%",
"rangeMaps": [
{
"from": "null",
"text": "N/A",
"to": "null"
}
],
"sparkline": {
"fillColor": "rgba(31, 118, 189, 0.18)",
"full": false,
"lineColor": "rgb(31, 120, 193)",
"show": false,
"ymax": null,
"ymin": null
},
"tableColumn": "",
"targets": [
{
"expr": "count(redis_instance_info{alias=~"$cluster", role="slave"})",
"interval": "",
"legendFormat": "",
"refId": "A"
}
],
"thresholds": "",
"timeFrom": null,
"timeShift": null,
"title": "从节点个数",
"type": "singlestat",
"valueFontSize": "100%",
"valueMaps": [
{
"op": "=",
"text": "N/A",
"value": "null"
}
],
"valueName": "current"
},
{
"aliasColors": {},
"bars": false,
"dashLength": 10,
"dashes": false,
"datasource": null,
"description": "Redus Cluster OPS指标",
"fill": 1,
"fillGradient": 0,
"gridPos": {
"h": 8,
"w": 12,
"x": 0,
"y": 3
},
"hiddenSeries": false,
"id": 16,
"legend": {
"avg": false,
"current": false,
"max": false,
"min": false,
"show": true,
"total": false,
"values": false
},
"lines": true,
"linewidth": 1,
"nullPointMode": "null",
"options": {
"dataLinks": []
},
"percentage": false,
"pointradius": 2,
"points": false,
"renderer": "flot",
"seriesOverrides": [],
"spaceLength": 10,
"stack": false,
"steppedLine": false,
"targets": [
{
"expr": "ceil(sum(rate(redis_commands_processed_total{alias=~"$cluster",addr=~"$master"}[$interval])) by (alias))",
"interval": "5s",
"legendFormat": "{{alias}}",
"refId": "A"
}
],
"thresholds": [],
"timeFrom": null,
"timeRegions": [],
"timeShift": null,
"title": "Redis Cluster OPS",
"tooltip": {
"shared": true,
"sort": 0,
"value_type": "individual"
},
"type": "graph",
"xaxis": {
"buckets": null,
"mode": "time",
"name": null,
"show": true,
"values": []
},
"yaxes": [
{
"format": "short",
"label": null,
"logBase": 1,
"max": null,
"min": null,
"show": true
},
{
"format": "short",
"label": null,
"logBase": 1,
"max": null,
"min": null,
"show": true
}
],
"yaxis": {
"align": false,
"alignLevel": null
}
},
{
"aliasColors": {},
"bars": false,
"dashLength": 10,
"dashes": false,
"datasource": null,
"description": "Redis 内存使用大小值",
"fill": 1,
"fillGradient": 0,
"gridPos": {
"h": 8,
"w": 12,
"x": 12,
"y": 3
},
"hiddenSeries": false,
"id": 18,
"legend": {
"avg": false,
"current": false,
"max": false,
"min": false,
"show": true,
"total": false,
"values": false
},
"lines": true,
"linewidth": 1,
"nullPointMode": "null",
"options": {
"dataLinks": []
},
"percentage": false,
"pointradius": 2,
"points": false,
"renderer": "flot",
"seriesOverrides": [],
"spaceLength": 10,
"stack": false,
"steppedLine": false,
"targets": [
{
"expr": "redis_memory_used_bytes{addr=~"$instance"} ",
"interval": "5s",
"legendFormat": "{{addr}}",
"refId": "A"
}
],
"thresholds": [],
"timeFrom": null,
"timeRegions": [],
"timeShift": null,
"title": "Redis 内存使用大小",
"tooltip": {
"shared": true,
"sort": 0,
"value_type": "individual"
},
"type": "graph",
"xaxis": {
"buckets": null,
"mode": "time",
"name": null,
"show": true,
"values": []
},
"yaxes": [
{
"format": "bytes",
"label": null,
"logBase": 1,
"max": null,
"min": null,
"show": true
},
{
"format": "short",
"label": null,
"logBase": 1,
"max": null,
"min": null,
"show": true
}
],
"yaxis": {
"align": false,
"alignLevel": null
}
},
{
"aliasColors": {},
"bars": false,
"dashLength": 10,
"dashes": false,
"datasource": null,
"description": "Redis Server CPU使用率",
"fill": 1,
"fillGradient": 0,
"gridPos": {
"h": 8,
"w": 12,
"x": 0,
"y": 11
},
"hiddenSeries": false,
"id": 14,
"legend": {
"avg": false,
"current": false,
"max": false,
"min": false,
"show": true,
"total": false,
"values": false
},
"lines": true,
"linewidth": 1,
"nullPointMode": "null",
"options": {
"dataLinks": []
},
"percentage": false,
"pointradius": 2,
"points": false,
"renderer": "flot",
"seriesOverrides": [],
"spaceLength": 10,
"stack": false,
"steppedLine": false,
"targets": [
{
"expr": "100* (rate(redis_used_cpu_sys{addr=~"$instance"}[$interval]) + rate(redis_used_cpu_user{addr=~"$instance"}[$interval]))",
"interval": "5s",
"legendFormat": "{{addr}}",
"refId": "A"
}
],
"thresholds": [],
"timeFrom": null,
"timeRegions": [],
"timeShift": null,
"title": "Redis CPU使用率",
"tooltip": {
"shared": true,
"sort": 0,
"value_type": "individual"
},
"type": "graph",
"xaxis": {
"buckets": null,
"mode": "time",
"name": null,
"show": true,
"values": []
},
"yaxes": [
{
"format": "percent",
"label": null,
"logBase": 1,
"max": null,
"min": null,
"show": true
},
{
"format": "short",
"label": null,
"logBase": 1,
"max": null,
"min": null,
"show": true
}
],
"yaxis": {
"align": false,
"alignLevel": null
}
},
{
"aliasColors": {},
"bars": false,
"dashLength": 10,
"dashes": false,
"datasource": null,
"description": "Redis 内存使用率",
"fill": 1,
"fillGradient": 0,
"gridPos": {
"h": 8,
"w": 12,
"x": 12,
"y": 11
},
"hiddenSeries": false,
"id": 20,
"legend": {
"avg": false,
"current": false,
"max": false,
"min": false,
"show": true,
"total": false,
"values": false
},
"lines": true,
"linewidth": 1,
"nullPointMode": "null",
"options": {
"dataLinks": []
},
"percentage": false,
"pointradius": 2,
"points": false,
"renderer": "flot",
"seriesOverrides": [],
"spaceLength": 10,
"stack": false,
"steppedLine": false,
"targets": [
{
"expr": "(redis_memory_used_bytes{addr=~"$instance"} / redis_config_maxmemory{addr=~"$instance"}) * 100",
"interval": "5s",
"legendFormat": "{{addr}}",
"refId": "A"
}
],
"thresholds": [],
"timeFrom": null,
"timeRegions": [],
"timeShift": null,
"title": "Redis 内存使用率",
"tooltip": {
"shared": true,
"sort": 0,
"value_type": "individual"
},
"type": "graph",
"xaxis": {
"buckets": null,
"mode": "time",
"name": null,
"show": true,
"values": []
},
"yaxes": [
{
"format": "percent",
"label": null,
"logBase": 1,
"max": null,
"min": null,
"show": true
},
{
"format": "short",
"label": null,
"logBase": 1,
"max": null,
"min": null,
"show": true
}
],
"yaxis": {
"align": false,
"alignLevel": null
}
},
{
"aliasColors": {},
"bars": false,
"dashLength": 10,
"dashes": false,
"datasource": null,
"description": "各个节点系统CPU使用率",
"fill": 1,
"fillGradient": 0,
"gridPos": {
"h": 8,
"w": 12,
"x": 0,
"y": 19
},
"hiddenSeries": false,
"id": 24,
"legend": {
"avg": false,
"current": false,
"max": false,
"min": false,
"show": true,
"total": false,
"values": false
},
"lines": true,
"linewidth": 1,
"nullPointMode": "null",
"options": {
"dataLinks": []
},
"percentage": false,
"pointradius": 2,
"points": false,
"renderer": "flot",
"seriesOverrides": [],
"spaceLength": 10,
"stack": false,
"steppedLine": false,
"targets": [
{
"expr": "topk(3,clamp_max((avg by (hostname,mode) ((clamp_max(rate(node_cpu_seconds_total{hostname=~"$host",mode!="idle"}[$interval]),1)) or (clamp_max(irate(node_cpu_seconds_total{hostname=~"$host",mode!="idle"}[5m]),1)) ))*100,100))",
"hide": true,
"interval": "",
"legendFormat": "{{mode}}",
"refId": "A"
},
{
"expr": "1 - avg by (hostip)(rate(node_cpu_seconds_total{hostip=~"$host", mode="idle"}[$interval]))",
"interval": "",
"legendFormat": "{{hostip}}",
"refId": "B"
}
],
"thresholds": [],
"timeFrom": null,
"timeRegions": [],
"timeShift": null,
"title": "系统CPU使用率",
"tooltip": {
"shared": true,
"sort": 0,
"value_type": "individual"
},
"type": "graph",
"xaxis": {
"buckets": null,
"mode": "time",
"name": null,
"show": true,
"values": []
},
"yaxes": [
{
"format": "percentunit",
"label": null,
"logBase": 1,
"max": null,
"min": null,
"show": true
},
{
"format": "short",
"label": null,
"logBase": 1,
"max": null,
"min": null,
"show": true
}
],
"yaxis": {
"align": false,
"alignLevel": null
}
},
{
"aliasColors": {},
"bars": false,
"dashLength": 10,
"dashes": false,
"datasource": null,
"description": "各个节点系统物理内存利用率",
"fill": 1,
"fillGradient": 0,
"gridPos": {
"h": 8,
"w": 12,
"x": 12,
"y": 19
},
"hiddenSeries": false,
"id": 30,
"legend": {
"avg": false,
"current": false,
"max": false,
"min": false,
"show": true,
"total": false,
"values": false
},
"lines": true,
"linewidth": 1,
"nullPointMode": "null",
"options": {
"dataLinks": []
},
"percentage": false,
"pointradius": 2,
"points": false,
"renderer": "flot",
"seriesOverrides": [],
"spaceLength": 10,
"stack": false,
"steppedLine": false,
"targets": [
{
"expr": "((node_memory_MemTotal_bytes{hostip=~"$host"} - (node_memory_MemAvailable_bytes{hostip=~"$host"} or (node_memory_MemFree_bytes{hostip=~"$host"} + node_memory_Buffers_bytes{hostip=~"$host"} + node_memory_Cached_bytes{hostip=~"$host"})))*100 / node_memory_MemTotal_bytes{hostip=~"$host"})",
"hide": false,
"interval": "",
"legendFormat": "{{hostip}}",
"refId": "B"
}
],
"thresholds": [],
"timeFrom": null,
"timeRegions": [],
"timeShift": null,
"title": "系统物理内存利用率",
"tooltip": {
"shared": true,
"sort": 0,
"value_type": "individual"
},
"type": "graph",
"xaxis": {
"buckets": null,
"mode": "time",
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"show": true,
"values": []
},
"yaxes": [
{
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"show": true
},
{
"format": "short",
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"max": null,
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"show": true
}
],
"yaxis": {
"align": false,
"alignLevel": null
}
},
{
"aliasColors": {},
"bars": true,
"cacheTimeout": null,
"dashLength": 10,
"dashes": false,
"datasource": null,
"description": "各个节点系统磁盘使用率",
"fill": 1,
"fillGradient": 0,
"gridPos": {
"h": 8,
"w": 12,
"x": 0,
"y": 27
},
"hiddenSeries": false,
"id": 32,
"legend": {
"avg": false,
"current": false,
"max": false,
"min": false,
"show": true,
"total": false,
"values": false
},
"lines": false,
"linewidth": 1,
"links": [],
"nullPointMode": "null",
"options": {
"dataLinks": []
},
"percentage": false,
"pluginVersion": "6.7.2",
"pointradius": 2,
"points": false,
"renderer": "flot",
"seriesOverrides": [],
"spaceLength": 10,
"stack": false,
"steppedLine": false,
"targets": [
{
"expr": "topk(10,max((1 - node_filesystem_avail_bytes{hostip=~"$host", fstype!~"rootfs|selinuxfs|autofs|rpc_pipefs|tmpfs"} / node_filesystem_size_bytes{hostip=~"$host", fstype!~"rootfs|selinuxfs|autofs|rpc_pipefs|tmpfs"})*100) by (hostip) > 0)",
"interval": "",
"legendFormat": "{{hostip}}",
"refId": "A"
}
],
"thresholds": [],
"timeFrom": null,
"timeRegions": [],
"timeShift": null,
"title": "系统磁盘使用率",
"tooltip": {
"shared": false,
"sort": 0,
"value_type": "individual"
},
"type": "graph",
"xaxis": {
"buckets": null,
"mode": "series",
"name": null,
"show": true,
"values": [
"current"
]
},
"yaxes": [
{
"format": "percent",
"label": null,
"logBase": 1,
"max": null,
"min": null,
"show": true
},
{
"format": "short",
"label": null,
"logBase": 1,
"max": null,
"min": null,
"show": true
}
],
"yaxis": {
"align": false,
"alignLevel": null
}
},
{
"aliasColors": {},
"bars": false,
"dashLength": 10,
"dashes": false,
"datasource": null,
"description": "各个节点以及集群的 KEYS 总数",
"fill": 1,
"fillGradient": 0,
"gridPos": {
"h": 8,
"w": 12,
"x": 12,
"y": 27
},
"hiddenSeries": false,
"id": 22,
"legend": {
"avg": false,
"current": false,
"max": false,
"min": false,
"show": true,
"total": false,
"values": false
},
"lines": true,
"linewidth": 1,
"nullPointMode": "null",
"options": {
"dataLinks": []
},
"percentage": false,
"pointradius": 2,
"points": false,
"renderer": "flot",
"seriesOverrides": [],
"spaceLength": 10,
"stack": false,
"steppedLine": false,
"targets": [
{
"expr": "sum(redis_db_keys{addr=~"$master"}) by (addr,db)",
"interval": "",
"legendFormat": "{{addr}}",
"refId": "A"
},
{
"expr": "sum(redis_db_keys{addr=~"$master"}) by (alias)",
"interval": "",
"legendFormat": "{{alias}}_total",
"refId": "B"
}
],
"thresholds": [],
"timeFrom": null,
"timeRegions": [],
"timeShift": null,
"title": "KEYS 总数",
"tooltip": {
"shared": true,
"sort": 0,
"value_type": "individual"
},
"type": "graph",
"xaxis": {
"buckets": null,
"mode": "time",
"name": null,
"show": true,
"values": []
},
"yaxes": [
{
"format": "short",
"label": null,
"logBase": 1,
"max": null,
"min": null,
"show": true
},
{
"format": "short",
"label": null,
"logBase": 1,
"max": null,
"min": null,
"show": true
}
],
"yaxis": {
"align": false,
"alignLevel": null
}
},
{
"aliasColors": {},
"bars": false,
"dashLength": 10,
"dashes": false,
"datasource": null,
"description": "各个节点活跃连接数",
"fill": 1,
"fillGradient": 0,
"gridPos": {
"h": 8,
"w": 12,
"x": 0,
"y": 35
},
"hiddenSeries": false,
"id": 26,
"legend": {
"avg": false,
"current": false,
"max": false,
"min": false,
"show": true,
"total": false,
"values": false
},
"lines": true,
"linewidth": 1,
"nullPointMode": "null",
"options": {
"dataLinks": []
},
"percentage": false,
"pointradius": 2,
"points": false,
"renderer": "flot",
"seriesOverrides": [],
"spaceLength": 10,
"stack": false,
"steppedLine": false,
"targets": [
{
"expr": "redis_connected_clients{addr=~"$instance"}",
"interval": "",
"legendFormat": "{{addr}}",
"refId": "A"
}
],
"thresholds": [],
"timeFrom": null,
"timeRegions": [],
"timeShift": null,
"title": "活跃连接数",
"tooltip": {
"shared": true,
"sort": 0,
"value_type": "individual"
},
"type": "graph",
"xaxis": {
"buckets": null,
"mode": "time",
"name": null,
"show": true,
"values": []
},
"yaxes": [
{
"format": "short",
"label": null,
"logBase": 1,
"max": null,
"min": null,
"show": true
},
{
"format": "short",
"label": null,
"logBase": 1,
"max": null,
"min": null,
"show": true
}
],
"yaxis": {
"align": false,
"alignLevel": null
}
},
{
"aliasColors": {},
"bars": false,
"dashLength": 10,
"dashes": false,
"datasource": null,
"description": "各个节点内存碎片率",
"fill": 1,
"fillGradient": 0,
"gridPos": {
"h": 8,
"w": 12,
"x": 12,
"y": 35
},
"hiddenSeries": false,
"id": 28,
"legend": {
"avg": false,
"current": false,
"max": false,
"min": false,
"show": true,
"total": false,
"values": false
},
"lines": true,
"linewidth": 1,
"nullPointMode": "null",
"options": {
"dataLinks": []
},
"percentage": false,
"pointradius": 2,
"points": false,
"renderer": "flot",
"seriesOverrides": [],
"spaceLength": 10,
"stack": false,
"steppedLine": false,
"targets": [
{
"expr": "redis_mem_fragmentation_ratio{addr=~"$instance"}",
"interval": "",
"legendFormat": "{{addr}}",
"refId": "A"
}
],
"thresholds": [],
"timeFrom": null,
"timeRegions": [],
"timeShift": null,
"title": "内存碎片率",
"tooltip": {
"shared": true,
"sort": 0,
"value_type": "individual"
},
"type": "graph",
"xaxis": {
"buckets": null,
"mode": "time",
"name": null,
"show": true,
"values": []
},
"yaxes": [
{
"format": "short",
"label": null,
"logBase": 1,
"max": null,
"min": null,
"show": true
},
{
"format": "short",
"label": null,
"logBase": 1,
"max": null,
"min": null,
"show": true
}
],
"yaxis": {
"align": false,
"alignLevel": null
}
},
{
"aliasColors": {},
"bars": false,
"dashLength": 10,
"dashes": false,
"datasource": null,
"description": "各个节点 的负载",
"fill": 1,
"fillGradient": 0,
"gridPos": {
"h": 8,
"w": 12,
"x": 0,
"y": 43
},
"hiddenSeries": false,
"id": 34,
"legend": {
"avg": false,
"current": false,
"max": false,
"min": false,
"show": true,
"total": false,
"values": false
},
"lines": true,
"linewidth": 1,
"nullPointMode": "null",
"options": {
"dataLinks": []
},
"percentage": false,
"pointradius": 2,
"points": false,
"renderer": "flot",
"seriesOverrides": [],
"spaceLength": 10,
"stack": false,
"steppedLine": false,
"targets": [
{
"expr": "node_load1{hostip=~"$host"}",
"interval": "",
"legendFormat": "{{hostip}}",
"refId": "A"
}
],
"thresholds": [],
"timeFrom": null,
"timeRegions": [],
"timeShift": null,
"title": "负载（Load）",
"tooltip": {
"shared": true,
"sort": 0,
"value_type": "individual"
},
"type": "graph",
"xaxis": {
"buckets": null,
"mode": "time",
"name": null,
"show": true,
"values": []
},
"yaxes": [
{
"format": "short",
"label": null,
"logBase": 1,
"max": null,
"min": null,
"show": true
},
{
"format": "short",
"label": null,
"logBase": 1,
"max": null,
"min": null,
"show": true
}
],
"yaxis": {
"align": false,
"alignLevel": null
}
}
],
"refresh": "5s",
"schemaVersion": 22,
"style": "dark",
"tags": [],
"templating": {
"list": [
{
"auto": true,
"auto_count": 100,
"auto_min": "1s",
"current": {
"selected": true,
"text": "5s",
"value": "5s"
},
"hide": 0,
"label": "interval",
"name": "interval",
"options": [
{
"selected": false,
"text": "auto",
"value": "$__auto_interval_interval"
},
{
"selected": true,
"text": "5s",
"value": "5s"
},
{
"selected": false,
"text": "30s",
"value": "30s"
},
{
"selected": false,
"text": "1m",
"value": "1m"
},
{
"selected": false,
"text": "10m",
"value": "10m"
},
{
"selected": false,
"text": "30m",
"value": "30m"
},
{
"selected": false,
"text": "1h",
"value": "1h"
},
{
"selected": false,
"text": "6h",
"value": "6h"
},
{
"selected": false,
"text": "12h",
"value": "12h"
},
{
"selected": false,
"text": "1d",
"value": "1d"
}
],
"query": "5s,30s,1m,10m,30m,1h,6h,12h,1d",
"refresh": 2,
"skipUrlSync": false,
"type": "interval"
},
{
"allValue": null,
"current": {
"text": "All",
"value": [
"$__all"
]
},
"datasource": "Prometheus",
"definition": "label_values(redis_up,alias)",
"hide": 0,
"includeAll": true,
"index": -1,
"label": "Cluster",
"multi": true,
"name": "cluster",
"options": [],
"query": "label_values(redis_up,alias)",
"refresh": 1,
"regex": "",
"skipUrlSync": false,
"sort": 0,
"tagValuesQuery": "",
"tags": [],
"tagsQuery": "",
"type": "query",
"useTags": false
},
{
"allValue": null,
"current": {
"text": "All",
"value": [
"$__all"
]
},
"datasource": "Prometheus",
"definition": "label_values(redis_instance_info{alias=~"$cluster"},role)",
"hide": 0,
"includeAll": true,
"index": -1,
"label": "Role",
"multi": true,
"name": "role",
"options": [],
"query": "label_values(redis_instance_info{alias=~"$cluster"},role)",
"refresh": 1,
"regex": "",
"skipUrlSync": false,
"sort": 0,
"tagValuesQuery": "",
"tags": [],
"tagsQuery": "",
"type": "query",
"useTags": false
},
{
"allValue": null,
"current": {
"text": "All",
"value": [
"$__all"
]
},
"datasource": "Prometheus",
"definition": "label_values(redis_instance_info{alias=~"$cluster",role=~"$role"},addr)",
"hide": 2,
"includeAll": true,
"index": -1,
"label": "instance",
"multi": true,
"name": "instance",
"options": [],
"query": "label_values(redis_instance_info{alias=~"$cluster",role=~"$role"},addr)",
"refresh": 1,
"regex": "",
"skipUrlSync": false,
"sort": 0,
"tagValuesQuery": "",
"tags": [],
"tagsQuery": "",
"type": "query",
"useTags": false
},
{
"allValue": null,
"current": {
"text": "All",
"value": [
"$__all"
]
},
"datasource": "Prometheus",
"definition": "label_values(redis_instance_info{alias=~"$cluster",role="master"},addr)",
"hide": 2,
"includeAll": true,
"index": -1,
"label": "master",
"multi": true,
"name": "master",
"options": [],
"query": "label_values(redis_instance_info{alias=~"$cluster",role="master"},addr)",
"refresh": 1,
"regex": "",
"skipUrlSync": false,
"sort": 0,
"tagValuesQuery": "",
"tags": [],
"tagsQuery": "",
"type": "query",
"useTags": false
},
{
"allValue": null,
"current": {
"text": "All",
"value": [
"$__all"
]
},
"datasource": "Prometheus",
"definition": "label_values(redis_up{alias=~"$cluster"}, addr)",
"hide": 2,
"includeAll": true,
"index": -1,
"label": "host",
"multi": true,
"name": "host",
"options": [],
"query": "label_values(redis_up{alias=~"$cluster"}, addr)",
"refresh": 1,
"regex": "(.*):.*",
"skipUrlSync": false,
"sort": 0,
"tagValuesQuery": "",
"tags": [],
"tagsQuery": "",
"type": "query",
"useTags": false
}
]
},
"time": {
"from": "now-5m",
"to": "now"
},
"timepicker": {
"refresh_intervals": [
"5s",
"10s",
"30s",
"1m",
"5m",
"15m",
"30m",
"1h",
"2h",
"1d"
]
},
"timezone": "",
"title": "Redis_Cluster_V0.34",
"uid": "5FfBHG3Zz1",
"variables": {
"list": []
},
"version": 1
}
3）导入dashboard（763）到Grafana，展示的监控图：
需要注意的是，监控面板上看到的是exporter的IP和端口，看不到Redis实例的端口，如果是一台机器部署一台Redis实例，则可以直接使用主机名。或则修改相应的labels来自定义需求。除了修改labels之外，还可以自定义数据源，如使用MySQL作为新数据源。
5）MySQL做为数据源定制模板
添加数据源：
表结构：
CREATE TABLE `cluster_info` ( `id` bigint(20) unsigned NOT NULL AUTO_INCREMENT COMMENT '主键', `cluster_type` varchar(64) DEFAULT NULL COMMENT '集群类型', `cluster_name` varchar(64) DEFAULT NULL COMMENT '集群名', `hostname` varchar(64) DEFAULT NULL COMMENT '主机名', `host_ip` varchar(64) DEFAULT NULL COMMENT 'IP', `port` int(11) DEFAULT NULL COMMENT '服务端口', `role` varchar(64) DEFAULT NULL COMMENT '服务角色', `comments` varchar(500) DEFAULT NULL COMMENT '集群描述', `create_time` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP COMMENT '创建时间', `update_time` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP COMMENT '更新时间', PRIMARY KEY (`id`), KEY `idx_create_time` (`create_time`), KEY `idx_update_time` (`update_time`) ) ENGINE=InnoDB AUTO_INCREMENT=1 DEFAULT CHARSET=utf8 COMMENT='集群信息'
表记录：
mysql> select * from cluster_info; +----+---------------+--------------+----------+-----------------+------+--------+--------------+---------------------+---------------------+ | id | cluster_type | cluster_name | hostname | host_ip | port | role | comments | create_time | update_time | +----+---------------+--------------+----------+-----------------+------+--------+--------------+---------------------+---------------------+ | 1 | Redis_Cluster | testX | test2 | 192.168.163.132 | 6380 | master | 测试集群 | 2020-04-08 19:22:56 | 2020-04-09 11:19:13 | | 2 | Redis_Cluster | testX | test3 | 192.168.163.133 | 6380 | master | 测试集群 | 2020-04-08 19:24:29 | 2020-04-09 11:19:16 | | 3 | Redis_Cluster | testX | test4 | 192.168.163.134 | 6380 | master | 测试集群 | 2020-04-08 19:24:33 | 2020-04-09 11:19:16 | +----+---------------+--------------+----------+-----------------+------+--------+--------------+---------------------+---------------------+
5.1 使用编写导出器的最佳实践：
prometheus.yml：
global: scrape_interval: 10s # Set the scrape interval to every 15 seconds. Default is every 1 minute. evaluation_interval: 10s # Evaluate rules every 15 seconds. The default is every 1 minute. alerting: alertmanagers: - static_configs: - targets: # - alertmanager:9093 rule_files: # - "first_rules.yml" # - "second_rules.yml" scrape_configs: - job_name: 'prometheus' static_configs: - targets: ['192.168.163.132:9099'] - job_name: 'node_exporter' scrape_interval: 1s file_sd_configs: - files: - targets/node/node*.yml refresh_interval: 10s relabel_configs: - action: replace source_labels: ['__address__'] regex: (.*):(.*) replacement: $1 target_label: hostname - action: labeldrop regex: __meta_filepath - job_name: 'redis_exporter' scrape_interval: 1s file_sd_configs: - files: - targets/redis/Xredis*.yml relabel_configs: - action: replace source_labels: ['__address__'] regex: (.*):(.*) replacement: $1 target_label: hostip - action: labeldrop regex: __meta_filepath
targets/node/node*.yml
root@test2:/etc/prometheus/targets/node# ls -lh node*.yml
-rw-r--r-- 1 prometheus prometheus 103 4月 19 01:24 node_test2_exporter.yml
-rw-r--r-- 1 prometheus prometheus 103 4月 18 16:18 node_test3_exporter.yml
-rw-r--r-- 1 prometheus prometheus 103 4月 18 16:18 node_test4_exporter.yml
root@test2:/etc/prometheus/targets/node# cat node_test2_exporter.yml
[
{
"targets": ["192.168.163.132:9199"],
"labels": {"env":"test","instance":"test2"}
}
]
root@test2:/etc/prometheus/targets/node# cat node_test3_exporter.yml
[
{
"targets": ["192.168.163.133:9199"],
"labels": {"env":"test","instance":"test3"}
}
]
root@test2:/etc/prometheus/targets/node# cat node_test4_exporter.yml
[
{
"targets": ["192.168.163.134:9199"],
"labels": {"env":"test","instance":"test4"}
}
]
targets/redis/Xredis*.yml
root@test2:/etc/prometheus/targets/redis# ls -lh Xredis*.yml
-rw-r--r-- 1 root root 118 4月 19 00:34 Xredis_test2_6380_exporter.yml
-rw-r--r-- 1 root root 118 4月 19 00:36 Xredis_test3_6380_exporter.yml
-rw-r--r-- 1 root root 118 4月 19 00:35 Xredis_test4_6380_exporter.yml
root@test2:/etc/prometheus/targets/redis# cat Xredis_test2_6380_exporter.yml
[
{
"targets": ["192.168.163.132:9123"],
"labels": {"env":"test","cluster":"testX","alias":"test2"}
}
]
root@test2:/etc/prometheus/targets/redis# cat Xredis_test3_6380_exporter.yml
[
{
"targets": ["192.168.163.133:9123"],
"labels": {"env":"test","cluster":"testX","alias":"test3"}
}
]
root@test2:/etc/prometheus/targets/redis# cat Xredis_test4_6380_exporter.yml
[
{
"targets": ["192.168.163.134:9123"],
"labels": {"env":"test","cluster":"testX","alias":"test4"}
}
]
配置完成之后，可以直接到各个监控主机上启动redis_exporter：
test2:
./redis_exporter -redis-only-metrics -redis.addr 192.168.163.132:6380 -redis.password cba -web.listen-address=:9123
test3:
./redis_exporter -redis-only-metrics -redis.addr 192.168.163.133:6380 -redis.password cba -web.listen-address=:9123
test4:
./redis_exporter -redis-only-metrics -redis.addr 192.168.163.134:6380 -redis.password cba -web.listen-address=:9123
最后配置Grafana，效果：
JSON Model：
{
"annotations": {
"list": [
{
"builtIn": 1,
"datasource": "-- Grafana --",
"enable": true,
"hide": true,
"iconColor": "rgba(0, 211, 255, 1)",
"name": "Annotations & Alerts",
"type": "dashboard"
}
]
},
"editable": true,
"gnetId": null,
"graphTooltip": 0,
"id": 13,
"iteration": 1587231669738,
"links": [],
"panels": [
{
"cacheTimeout": null,
"colorBackground": false,
"colorValue": true,
"colors": [
"#299c46",
"rgba(237, 129, 40, 0.89)",
"#d44a3a"
],
"datasource": null,
"description": "集群个数",
"format": "none",
"gauge": {
"maxValue": 100,
"minValue": 0,
"show": false,
"thresholdLabels": false,
"thresholdMarkers": true
},
"gridPos": {
"h": 3,
"w": 5,
"x": 0,
"y": 0
},
"id": 8,
"interval": null,
"links": [],
"mappingType": 1,
"mappingTypes": [
{
"name": "value to text",
"value": 1
},
{
"name": "range to text",
"value": 2
}
],
"maxDataPoints": 100,
"nullPointMode": "connected",
"nullText": null,
"postfix": "",
"postfixFontSize": "50%",
"prefix": "",
"prefixFontSize": "50%",
"rangeMaps": [
{
"from": "null",
"text": "N/A",
"to": "null"
}
],
"sparkline": {
"fillColor": "rgba(31, 118, 189, 0.18)",
"full": false,
"lineColor": "rgb(31, 120, 193)",
"show": false,
"ymax": null,
"ymin": null
},
"tableColumn": "",
"targets": [
{
"expr": "count(count(redis_up{cluster=~"$cluster"}) by (cluster))",
"interval": "",
"legendFormat": "",
"refId": "A"
}
],
"thresholds": "",
"timeFrom": null,
"timeShift": null,
"title": "集群个数",
"type": "singlestat",
"valueFontSize": "100%",
"valueMaps": [
{
"op": "=",
"text": "N/A",
"value": "null"
}
],
"valueName": "current"
},
{
"cacheTimeout": null,
"colorBackground": false,
"colorValue": true,
"colors": [
"#299c46",
"rgba(237, 129, 40, 0.89)",
"#d44a3a"
],
"datasource": null,
"description": "集群节点数量",
"format": "none",
"gauge": {
"maxValue": 100,
"minValue": 0,
"show": false,
"thresholdLabels": false,
"thresholdMarkers": true
},
"gridPos": {
"h": 3,
"w": 5,
"x": 5,
"y": 0
},
"id": 4,
"interval": null,
"links": [],
"mappingType": 1,
"mappingTypes": [
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"label": null,
"logBase": 1,
"max": null,
"min": null,
"show": true
},
{
"format": "short",
"label": null,
"logBase": 1,
"max": null,
"min": null,
"show": true
}
],
"yaxis": {
"align": false,
"alignLevel": null
}
},
{
"aliasColors": {},
"bars": false,
"dashLength": 10,
"dashes": false,
"datasource": null,
"description": "各个节点内存碎片率",
"fill": 1,
"fillGradient": 0,
"gridPos": {
"h": 8,
"w": 12,
"x": 12,
"y": 35
},
"hiddenSeries": false,
"id": 28,
"legend": {
"avg": false,
"current": false,
"max": false,
"min": false,
"show": true,
"total": false,
"values": false
},
"lines": true,
"linewidth": 1,
"nullPointMode": "null",
"options": {
"dataLinks": []
},
"percentage": false,
"pointradius": 2,
"points": false,
"renderer": "flot",
"seriesOverrides": [],
"spaceLength": 10,
"stack": false,
"steppedLine": false,
"targets": [
{
"expr": "redis_mem_fragmentation_ratio{alias=~"$host"}",
"interval": "",
"legendFormat": "{{alias}}",
"refId": "A"
}
],
"thresholds": [],
"timeFrom": null,
"timeRegions": [],
"timeShift": null,
"title": "内存碎片率",
"tooltip": {
"shared": true,
"sort": 0,
"value_type": "individual"
},
"type": "graph",
"xaxis": {
"buckets": null,
"mode": "time",
"name": null,
"show": true,
"values": []
},
"yaxes": [
{
"format": "short",
"label": null,
"logBase": 1,
"max": null,
"min": null,
"show": true
},
{
"format": "short",
"label": null,
"logBase": 1,
"max": null,
"min": null,
"show": true
}
],
"yaxis": {
"align": false,
"alignLevel": null
}
},
{
"aliasColors": {},
"bars": false,
"dashLength": 10,
"dashes": false,
"datasource": null,
"description": "各个节点 的负载",
"fill": 1,
"fillGradient": 0,
"gridPos": {
"h": 8,
"w": 12,
"x": 0,
"y": 43
},
"hiddenSeries": false,
"id": 34,
"legend": {
"avg": false,
"current": false,
"max": false,
"min": false,
"show": true,
"total": false,
"values": false
},
"lines": true,
"linewidth": 1,
"nullPointMode": "null",
"options": {
"dataLinks": []
},
"percentage": false,
"pointradius": 2,
"points": false,
"renderer": "flot",
"seriesOverrides": [],
"spaceLength": 10,
"stack": false,
"steppedLine": false,
"targets": [
{
"expr": "node_load1{instance=~"$host"}",
"interval": "",
"legendFormat": "{{instance}}",
"refId": "A"
}
],
"thresholds": [],
"timeFrom": null,
"timeRegions": [],
"timeShift": null,
"title": "负载（Load）",
"tooltip": {
"shared": true,
"sort": 0,
"value_type": "individual"
},
"type": "graph",
"xaxis": {
"buckets": null,
"mode": "time",
"name": null,
"show": true,
"values": []
},
"yaxes": [
{
"format": "short",
"label": null,
"logBase": 1,
"max": null,
"min": null,
"show": true
},
{
"format": "short",
"label": null,
"logBase": 1,
"max": null,
"min": null,
"show": true
}
],
"yaxis": {
"align": false,
"alignLevel": null
}
}
],
"refresh": "5s",
"schemaVersion": 22,
"style": "dark",
"tags": [],
"templating": {
"list": [
{
"auto": true,
"auto_count": 100,
"auto_min": "1s",
"current": {
"selected": false,
"text": "5s",
"value": "5s"
},
"hide": 0,
"label": "interval",
"name": "interval",
"options": [
{
"selected": false,
"text": "auto",
"value": "$__auto_interval_interval"
},
{
"selected": true,
"text": "5s",
"value": "5s"
},
{
"selected": false,
"text": "30s",
"value": "30s"
},
{
"selected": false,
"text": "1m",
"value": "1m"
},
{
"selected": false,
"text": "10m",
"value": "10m"
},
{
"selected": false,
"text": "30m",
"value": "30m"
},
{
"selected": false,
"text": "1h",
"value": "1h"
},
{
"selected": false,
"text": "6h",
"value": "6h"
},
{
"selected": false,
"text": "12h",
"value": "12h"
},
{
"selected": false,
"text": "1d",
"value": "1d"
}
],
"query": "5s,30s,1m,10m,30m,1h,6h,12h,1d",
"refresh": 2,
"skipUrlSync": false,
"type": "interval"
},
{
"allValue": null,
"current": {
"text": "All",
"value": [
"$__all"
]
},
"datasource": "MySQL",
"definition": "select cluster_name from cluster_info where cluster_type = "Redis_Cluster"",
"hide": 0,
"includeAll": true,
"index": -1,
"label": "Cluster",
"multi": true,
"name": "cluster",
"options": [],
"query": "select cluster_name from cluster_info where cluster_type = "Redis_Cluster"",
"refresh": 1,
"regex": "",
"skipUrlSync": false,
"sort": 0,
"tagValuesQuery": "",
"tags": [],
"tagsQuery": "",
"type": "query",
"useTags": false
},
{
"allValue": null,
"current": {
"text": "All",
"value": [
"$__all"
]
},
"datasource": "MySQL",
"definition": "select role from cluster_info where cluster_type = "Redis_Cluster" and cluster_name in ($cluster)",
"hide": 0,
"includeAll": true,
"index": -1,
"label": "Role",
"multi": true,
"name": "role",
"options": [],
"query": "select role from cluster_info where cluster_type = "Redis_Cluster" and cluster_name in ($cluster)",
"refresh": 1,
"regex": "",
"skipUrlSync": false,
"sort": 0,
"tagValuesQuery": "",
"tags": [],
"tagsQuery": "",
"type": "query",
"useTags": false
},
{
"allValue": null,
"current": {
"text": "All",
"value": [
"$__all"
]
},
"datasource": "MySQL",
"definition": "select hostname from cluster_info where cluster_type = "Redis_Cluster" and cluster_name in ($cluster)",
"hide": 2,
"includeAll": true,
"index": -1,
"label": "host",
"multi": true,
"name": "host",
"options": [],
"query": "select hostname from cluster_info where cluster_type = "Redis_Cluster" and cluster_name in ($cluster)",
"refresh": 1,
"regex": "",
"skipUrlSync": false,
"sort": 0,
"tagValuesQuery": "",
"tags": [],
"tagsQuery": "",
"type": "query",
"useTags": false
},
{
"allValue": null,
"current": {
"text": "All",
"value": [
"$__all"
]
},
"datasource": "MySQL",
"definition": "select hostname from cluster_info where cluster_type = "Redis_Cluster" and cluster_name in ($cluster) and role="master"",
"hide": 2,
"includeAll": true,
"index": -1,
"label": "master",
"multi": true,
"name": "master",
"options": [],
"query": "select hostname from cluster_info where cluster_type = "Redis_Cluster" and cluster_name in ($cluster) and role="master"",
"refresh": 1,
"regex": "",
"skipUrlSync": false,
"sort": 0,
"tagValuesQuery": "",
"tags": [],
"tagsQuery": "",
"type": "query",
"useTags": false
},
{
"allValue": null,
"current": {
"text": "All",
"value": [
"$__all"
]
},
"datasource": "MySQL",
"definition": "select hostname from cluster_info where cluster_type = "Redis_Cluster" and cluster_name in ($cluster) and role="slave"",
"hide": 2,
"includeAll": true,
"index": -1,
"label": "slave",
"multi": true,
"name": "slave",
"options": [],
"query": "select hostname from cluster_info where cluster_type = "Redis_Cluster" and cluster_name in ($cluster) and role="slave"",
"refresh": 1,
"regex": "",
"skipUrlSync": false,
"sort": 0,
"tagValuesQuery": "",
"tags": [],
"tagsQuery": "",
"type": "query",
"useTags": false
},
{
"allValue": null,
"current": {
"text": "All",
"value": [
"$__all"
]
},
"datasource": "Prometheus",
"definition": "label_values(redis_instance_info{cluster=~"$cluster",role=~"$role"},instance)",
"hide": 2,
"includeAll": true,
"index": -1,
"label": "instance",
"multi": true,
"name": "instance",
"options": [],
"query": "label_values(redis_instance_info{cluster=~"$cluster",role=~"$role"},instance)",
"refresh": 1,
"regex": "",
"skipUrlSync": false,
"sort": 0,
"tagValuesQuery": "",
"tags": [],
"tagsQuery": "",
"type": "query",
"useTags": false
}
]
},
"time": {
"from": "now-5m",
"to": "now"
},
"timepicker": {
"refresh_intervals": [
"5s",
"10s",
"30s",
"1m",
"5m",
"15m",
"30m",
"1h",
"2h",
"1d"
]
},
"timezone": "",
"title": "Redis_Cluster_V1.35",
"uid": "5FfBHG3Zz",
"variables": {
"list": []
},
"version": 9
}
5.2 使用老版本的exporter：
prometheus.yml
global:
scrape_interval: 15s # Set the scrape interval to every 15 seconds. Default is every 1 minute.
evaluation_interval: 15s # Evaluate rules every 15 seconds. The default is every 1 minute.
alerting:
alertmanagers:
- static_configs:
- targets:
# - alertmanager:9093
rule_files:
# - "first_rules.yml"
# - "second_rules.yml"
scrape_configs:
- job_name: 'prometheus'
static_configs:
- targets: ['192.168.163.132:9099']
- job_name: 'node_exporter'
scrape_interval: 1s
file_sd_configs:
- files:
- targets/node/node*.yml
refresh_interval: 10s
relabel_configs:
- action: replace
source_labels: ['__address__']
regex: (.*):(.*)
replacement: $1
target_label: hostname
- action: labeldrop
regex: __meta_filepath
- job_name: 'redis_exporter'
scrape_interval: 1s
static_configs:
- targets: ['192.168.163.132:9128']
配置完成之后，可以直接到监控主机上启动redis_exporter：
./redis_exporter -redis-only-metrics -redis.addr 192.168.163.132:6380,192.168.163.133:6380,192.168.163.134:6380 -redis.alias test2,test3,test4 -redis.password cba,cba,cba -web.listen-address :9128
最后配置Grafana，效果：
JSON Model：
{
"annotations": {
"list": [
{
"builtIn": 1,
"datasource": "-- Grafana --",
"enable": true,
"hide": true,
"iconColor": "rgba(0, 211, 255, 1)",
"name": "Annotations & Alerts",
"type": "dashboard"
}
]
},
"editable": true,
"gnetId": null,
"graphTooltip": 0,
"id": 13,
"iteration": 1587234344797,
"links": [],
"panels": [
{
"cacheTimeout": null,
"colorBackground": false,
"colorValue": true,
"colors": [
"#299c46",
"rgba(237, 129, 40, 0.89)",
"#d44a3a"
],
"datasource": "MySQL",
"description": "集群个数",
"format": "none",
"gauge": {
"maxValue": 100,
"minValue": 0,
"show": false,
"thresholdLabels": false,
"thresholdMarkers": true
},
"gridPos": {
"h": 3,
"w": 5,
"x": 0,
"y": 0
},
"id": 8,
"interval": null,
"links": [],
"mappingType": 1,
"mappingTypes": [
{
"name": "value to text",
"value": 1
},
{
"name": "range to text",
"value": 2
}
],
"maxDataPoints": 100,
"nullPointMode": "connected",
"nullText": null,
"postfix": "",
"postfixFontSize": "50%",
"prefix": "",
"prefixFontSize": "50%",
"rangeMaps": [
{
"from": "null",
"text": "N/A",
"to": "null"
}
],
"sparkline": {
"fillColor": "rgba(31, 118, 189, 0.18)",
"full": false,
"lineColor": "rgb(31, 120, 193)",
"show": false,
"ymax": null,
"ymin": null
},
"tableColumn": "",
"targets": [
{
"format": "table",
"group": [],
"metricColumn": "none",
"rawQuery": true,
"rawSql": "select count(distinct cluster_name) from cluster_info where cluster_type = 'Redis_Cluster'",
"refId": "A",
"select": [
[
{
"params": [
"id"
],
"type": "column"
}
]
],
"table": "cluster_info",
"timeColumn": "create_time",
"timeColumnType": "timestamp",
"where": [
{
"name": "$__timeFilter",
"params": [],
"type": "macro"
}
]
}
],
"thresholds": "",
"timeFrom": null,
"timeShift": null,
"title": "集群个数",
"type": "singlestat",
"valueFontSize": "100%",
"valueMaps": [
{
"op": "=",
"text": "N/A",
"value": "null"
}
],
"valueName": "current"
},
{
"cacheTimeout": null,
"colorBackground": false,
"colorValue": true,
"colors": [
"#299c46",
"rgba(237, 129, 40, 0.89)",
"#d44a3a"
],
"datasource": null,
"description": "集群节点数量",
"format": "none",
"gauge": {
"maxValue": 100,
"minValue": 0,
"show": false,
"thresholdLabels": false,
"thresholdMarkers": true
},
"gridPos": {
"h": 3,
"w": 5,
"x": 5,
"y": 0
},
"id": 4,
"interval": null,
"links": [],
"mappingType": 1,
"mappingTypes": [
{
"name": "value to text",
"value": 1
},
{
"name": "range to text",
"value": 2
}
],
"maxDataPoints": 100,
"nullPointMode": "connected",
"nullText": null,
"postfix": "",
"postfixFontSize": "50%",
"prefix": "",
"prefixFontSize": "50%",
"rangeMaps": [
{
"from": "null",
"text": "N/A",
"to": "null"
}
],
"sparkline": {
"fillColor": "rgba(31, 118, 189, 0.18)",
"full": false,
"lineColor": "rgb(31, 120, 193)",
"show": false,
"ymax": null,
"ymin": null
},
"tableColumn": "",
"targets": [
{
"expr": "count(redis_up{alias=~"$all_host"})",
"interval": "",
"legendFormat": "",
"refId": "A"
}
],
"thresholds": "",
"timeFrom": null,
"timeShift": null,
"title": "集群节点数",
"type": "singlestat",
"valueFontSize": "100%",
"valueMaps": [
{
"op": "=",
"text": "N/A",
"value": "null"
}
],
"valueName": "current"
},
{
"cacheTimeout": null,
"colorBackground": false,
"colorValue": true,
"colors": [
"#299c46",
"rgba(237, 129, 40, 0.89)",
"#d44a3a"
],
"datasource": null,
"description": "集群活跃节点数量",
"format": "none",
"gauge": {
"maxValue": 100,
"minValue": 0,
"show": false,
"thresholdLabels": false,
"thresholdMarkers": true
},
"gridPos": {
"h": 3,
"w": 4,
"x": 10,
"y": 0
},
"id": 6,
"interval": null,
"links": [],
"mappingType": 1,
"mappingTypes": [
{
"name": "value to text",
"value": 1
},
{
"name": "range to text",
"value": 2
}
],
"maxDataPoints": 100,
"nullPointMode": "connected",
"nullText": null,
"postfix": "",
"postfixFontSize": "50%",
"prefix": "",
"prefixFontSize": "50%",
"rangeMaps": [
{
"from": "null",
"text": "N/A",
"to": "null"
}
],
"sparkline": {
"fillColor": "rgba(31, 118, 189, 0.18)",
"full": false,
"lineColor": "rgb(31, 120, 193)",
"show": false,
"ymax": null,
"ymin": null
},
"tableColumn": "",
"targets": [
{
"expr": "count(redis_up{alias=~"$all_host"}>0)",
"interval": "",
"legendFormat": "",
"refId": "A"
}
],
"thresholds": "",
"timeFrom": null,
"timeShift": null,
"title": "集群活跃节点数",
"type": "singlestat",
"valueFontSize": "100%",
"valueMaps": [
{
"op": "=",
"text": "N/A",
"value": "null"
}
],
"valueName": "current"
},
{
"cacheTimeout": null,
"colorBackground": false,
"colorPrefix": false,
"colorValue": true,
"colors": [
"#299c46",
"rgba(237, 129, 40, 0.89)",
"#d44a3a"
],
"datasource": null,
"description": "主节点数量",
"format": "none",
"gauge": {
"maxValue": 100,
"minValue": 0,
"show": false,
"thresholdLabels": false,
"thresholdMarkers": true
},
"gridPos": {
"h": 3,
"w": 5,
"x": 14,
"y": 0
},
"id": 10,
"interval": null,
"links": [],
"mappingType": 1,
"mappingTypes": [
{
"name": "value to text",
"value": 1
},
{
"name": "range to text",
"value": 2
}
],
"maxDataPoints": 100,
"nullPointMode": "connected",
"nullText": null,
"postfix": "",
"postfixFontSize": "50%",
"prefix": "",
"prefixFontSize": "50%",
"rangeMaps": [
{
"from": "null",
"text": "N/A",
"to": "null"
}
],
"sparkline": {
"fillColor": "rgba(31, 118, 189, 0.18)",
"full": false,
"lineColor": "rgb(31, 120, 193)",
"show": false,
"ymax": null,
"ymin": null
},
"tableColumn": "",
"targets": [
{
"expr": "count(redis_instance_info{alias=~"$master", role="master"})",
"interval": "",
"legendFormat": "",
"refId": "A"
}
],
"thresholds": "",
"timeFrom": null,
"timeShift": null,
"title": "主节点个数",
"type": "singlestat",
"valueFontSize": "100%",
"valueMaps": [
{
"op": "=",
"text": "N/A",
"value": "null"
}
],
"valueName": "current"
},
{
"cacheTimeout": null,
"colorBackground": false,
"colorValue": true,
"colors": [
"#299c46",
"rgba(237, 129, 40, 0.89)",
"#d44a3a"
],
"datasource": null,
"description": "从节点数量",
"format": "none",
"gauge": {
"maxValue": 100,
"minValue": 0,
"show": false,
"thresholdLabels": false,
"thresholdMarkers": true
},
"gridPos": {
"h": 3,
"w": 5,
"x": 19,
"y": 0
},
"id": 12,
"interval": null,
"links": [],
"mappingType": 1,
"mappingTypes": [
{
"name": "value to text",
"value": 1
},
{
"name": "range to text",
"value": 2
}
],
"maxDataPoints": 100,
"nullPointMode": "connected",
"nullText": null,
"postfix": "",
"postfixFontSize": "50%",
"prefix": "",
"prefixFontSize": "50%",
"rangeMaps": [
{
"from": "null",
"text": "N/A",
"to": "null"
}
],
"sparkline": {
"fillColor": "rgba(31, 118, 189, 0.18)",
"full": false,
"lineColor": "rgb(31, 120, 193)",
"show": false,
"ymax": null,
"ymin": null
},
"tableColumn": "",
"targets": [
{
"expr": "count(redis_instance_info{alias=~"$slave", role="slave"})",
"interval": "",
"legendFormat": "",
"refId": "A"
}
],
"thresholds": "",
"timeFrom": null,
"timeShift": null,
"title": "从节点个数",
"type": "singlestat",
"valueFontSize": "100%",
"valueMaps": [
{
"op": "=",
"text": "N/A",
"value": "null"
}
],
"valueName": "current"
},
{
"aliasColors": {},
"bars": false,
"dashLength": 10,
"dashes": false,
"datasource": null,
"description": "Redus Cluster OPS指标",
"fill": 1,
"fillGradient": 0,
"gridPos": {
"h": 8,
"w": 12,
"x": 0,
"y": 3
},
"hiddenSeries": false,
"id": 16,
"legend": {
"avg": false,
"current": false,
"max": false,
"min": false,
"show": true,
"total": false,
"values": false
},
"lines": true,
"linewidth": 1,
"nullPointMode": "null",
"options": {
"dataLinks": []
},
"percentage": false,
"pointradius": 2,
"points": false,
"renderer": "flot",
"seriesOverrides": [],
"spaceLength": 10,
"stack": false,
"steppedLine": false,
"targets": [
{
"expr": "ceil(sum(rate(redis_commands_processed_total{alias=~"$master"}[$interval])))",
"interval": "5s",
"legendFormat": "",
"refId": "A"
}
],
"thresholds": [],
"timeFrom": null,
"timeRegions": [],
"timeShift": null,
"title": "Redis Cluster OPS",
"tooltip": {
"shared": true,
"sort": 0,
"value_type": "individual"
},
"type": "graph",
"xaxis": {
"buckets": null,
"mode": "time",
"name": null,
"show": true,
"values": []
},
"yaxes": [
{
"format": "short",
"label": null,
"logBase": 1,
"max": null,
"min": null,
"show": true
},
{
"format": "short",
"label": null,
"logBase": 1,
"max": null,
"min": null,
"show": true
}
],
"yaxis": {
"align": false,
"alignLevel": null
}
},
{
"aliasColors": {},
"bars": false,
"dashLength": 10,
"dashes": false,
"datasource": null,
"description": "Redis 内存使用大小值",
"fill": 1,
"fillGradient": 0,
"gridPos": {
"h": 8,
"w": 12,
"x": 12,
"y": 3
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"value": [
"$__all"
]
},
"datasource": "MySQL",
"definition": "select hostname from cluster_info where cluster_type = "Redis_Cluster" and cluster_name in ($cluster)",
"hide": 2,
"includeAll": true,
"index": -1,
"label": "all_host",
"multi": true,
"name": "all_host",
"options": [],
"query": "select hostname from cluster_info where cluster_type = "Redis_Cluster" and cluster_name in ($cluster)",
"refresh": 1,
"regex": "",
"skipUrlSync": false,
"sort": 0,
"tagValuesQuery": "",
"tags": [],
"tagsQuery": "",
"type": "query",
"useTags": false
}
]
},
"time": {
"from": "now-5m",
"to": "now"
},
"timepicker": {
"refresh_intervals": [
"5s",
"10s",
"30s",
"1m",
"5m",
"15m",
"30m",
"1h",
"2h",
"1d"
]
},
"timezone": "",
"title": "Redis_Cluster_V1.35",
"uid": "5FfBHG3Zz",
"variables": {
"list": []
},
"version": 14
}
从上面的图中看到，其中OPS的Legend展示的是表达式，按照老版本的的redis_exporter，不能自定义label，虽然监控不同密码多实例比较方便，但作图的时候不好看。目前想到二种方法：
1. 使用推荐的一个实例一个exporter。
2. 在老版本redis_exporter基础上，对指标进行重新定义和打label，此时需要自己编写一个exporter来对指标进行重写。
如：老版本的redis_exporter部署在137这台机器上，并且端口为9128：使用python的prometheus_client模块编写一个服务（5000）来抓取数据进行label修改：
#!/bin/env python # -*- encoding: utf-8 -*- import requests import re import json import MySQLdb import prometheus_client from prometheus_client import Gauge,Counter from flask import Response, Flask app = Flask(__name__) def redis_cluster_metadata(): conn = MySQLdb.connect(host="192.168.163.133", port=3306, user="dba", passwd="dba", db='test', charset='utf8') query = ''' SELECT concat( host_ip, ':', PORT ) ip, cluster_name FROM cluster_info WHERE cluster_type = 'Redis_Cluster' ''' cursor = conn.cursor() cursor.execute(query) conn.commit() result = cursor.fetchall() cursor.close() return result def gauge_init(pair): result = {} for k, v in pair.items(): name = v documentation = v label = ("alias", "addr", "cluster") gauge = Gauge(name, documentation, label) result[v] = gauge return result def redis_cluster_metric(pair): url = "http://192.168.163.137:9128/metrics" pat = re.compile(r'addr="(.*)",alias="(.*)"') request_data = requests.get(url, timeout=3) metrics_info = request_data.text metrics_dict = {} for metrics in metrics_info.split(' '): for metric in pair: if metrics.find(metric) == 0: value = metrics.split(' ')[1] pat_info = pat.search(metrics) ip = pat_info.group(1) alias = pat_info.group(2) metrics_dict.setdefault(ip, {}) metrics_dict[ip]['alias'] = alias metrics_dict[ip][metrics_pair[metric]] = value return metrics_dict @app.route("/metrics") def prometheus_for_redis(): redis_cluster_info = redis_cluster_metadata() metadata_dict = {} for redis_cluster_item in redis_cluster_info: ip,clustername = redis_cluster_item metadata_dict[ip] = clustername metrics_dict = redis_cluster_metric(metrics_pair) for k,v in metrics_dict.items(): for _k,_v in metadata_dict.items(): if k == _k: metrics_dict[k]['cluster'] = _v print metadata_dict print metrics_dict result = '' for metric_name, gauge in gauge_dict.items(): for k, v in metrics_dict.items(): if k in metadata_dict.keys(): gauge.labels(alias=v['alias'], addr=k, cluster=v['cluster']).set(v[metric_name]) result = result + prometheus_client.generate_latest(gauge).decode() return Response(result, mimetype="text/plain") if __name__ == "__main__": metrics_pair = {'redis_commands_processed_total': 'cluster_redis_commands_processed_total','redis_cluster_size':'cluster_redis_cluster_size'} gauge_dict = gauge_init(metrics_pair) app.run(host="0.0.0.0")
大致的思想是：对原始的redis_exporter的指标进行过滤，拿出需要的指标进行label指定，最后作为一个导出器服务启动（5000），并配置到prometheus.yml里：
global:
scrape_interval: 5s # Set the scrape interval to every 15 seconds. Default is every 1 minute.
evaluation_interval: 5s # Evaluate rules every 15 seconds. The default is every 1 minute.
alerting:
alertmanagers:
- static_configs:
- targets:
# - alertmanager:9093
rule_files:
# - "first_rules.yml"
# - "second_rules.yml"
scrape_configs:
- job_name: 'prometheus'
static_configs:
- targets: ['192.168.163.137:9099']
- job_name: 'node_exporter'
scrape_interval: 1s
file_sd_configs:
- files:
- targets/node/node*.yml
refresh_interval: 10s
relabel_configs:
- action: replace
source_labels: ['__address__']
regex: (.*):(.*)
replacement: $1
target_label: hostname
- action: labeldrop
regex: __meta_filepath
- job_name: 'redis_exporter'
scrape_interval: 1s
static_configs:
- targets: ['192.168.163.137:9128']
- job_name: 'redisx_exporter'
metrics_path: /redisx_cluster/metrics
scrape_interval: 1s
static_configs:
- targets: ['192.168.163.137:5000']
/Users/jinyizhou [18:51:25] ~$ curl http://0.0.0.0:5000/metrics # HELP cluster_redis_commands_processed_total cluster_redis_commands_processed_total # TYPE cluster_redis_commands_processed_total gauge cluster_redis_commands_processed_total{addr="192.168.163.137:6380",alias="test2",cluster="testX"} 1796512.0 cluster_redis_commands_processed_total{addr="192.168.163.133:6380",alias="test3",cluster="testX"} 1592838.0 cluster_redis_commands_processed_total{addr="192.168.163.134:6380",alias="test4",cluster="testX"} 1592053.0
最后OPS的Legend显示为：
小结：
上面的给出的这些参考指标以及监控项可以按照需要自行进行调整，如果需要做类似redis_exporter的导出器，可以连接Redis各个节点进行采样。具体的一些方法可以参考client_python。
总结：
本文大致介绍了Prometheus 监控Redis（cluster）的方法，后续会不定期进行对监控的完善。redis_exporter在v1.0之后做了比较大的调整，特别是对多实例不同密码这一块的改变，推荐还是最新版本的redis_exporter，按照推荐进行设置。如果需要，可以自行看官方文档进行相应的学习。