两台服务器：
S1:172.16.252.128
S2:172.16.252.128
相关组件下载地址：
https://prometheus.io/download/
一、下载安装prometheus软件
在S1服务器操作，
1、下载安装prometheus
wget https://github.com/prometheus/prometheus/releases/download/v2.26.0/prometheus-2.26.0.linux-amd64.tar.gz tar xvf prometheus-2.26.0.linux-amd64.tar.gz -C /usr/local cd /usr/local mv prometheus-2.26.0.linux-amd64/ prometheus cd prometheus/ ./prometheus --config.file="/usr/local/prometheus/prometheus.yml"
说明：【/usr/local/prometheus/prometheus.yml"】是prometheus配置文件，后面会修改这个配置文件。
[root@localhost prometheus]# ps -ef|grep prometheus root 45293 44695 0 03:57 pts/2 00:00:00 ./prometheus --config.file=/usr/local/prometheus/prometheus.yml
查看进程已经存在
默认端口号是9090
[root@localhost prometheus]# netstat -antp|grep 9090 tcp6 0 0 :::9090 :::* LISTEN 45293/./prometheus tcp6 0 0 ::1:9090 ::1:35918 ESTABLISHED 45293/./prometheus tcp6 0 0 ::1:35918 ::1:9090 ESTABLISHED 45293/./prometheus
2、通过浏览器访问http://服务器IP:9090就可以访问到prometheus的主界面
访问 http://172.16.252.128:9090
可以正常访问主界面，
点击界面Status--->Targes ，可以看到endpoint为【http://localhost:9090/metrics】 的机器。
二、安装node_exporter插件
在S2服务器操作
https://prometheus.io/download/#node_exporter
下载node_exporters组件
[root@bogon ~]# wget https://github.com/prometheus/node_exporter/releases/download/v1.1.2/node_exporter-1.1.2.linux-amd64.tar.gz [root@bogon ~]# tar xvf node_exporter-1.1.2.linux-amd64.tar.gz -C /usr/local/ [root@bogon ~]# cd /usr/local/ [root@bogon local]# mv node_exporter-1.1.2.linux-amd64/ node_exporter [root@bogon local]# cd node_exporter/ [root@bogon node_exporter]# nohup /usr/local/node_exporter/node_exporter &
[root@bogon node_exporter]# tai l-f nohup.out ---查看日志
查看进程
[root@bogon node_exporter]# ps -ef|grep node_exporter root 42360 2710 0 03:33 pts/0 00:00:01 /usr/local/node_exporter/node_exporter
node_exporter占用的是9100端口号
[root@bogon node_exporter]# netstat -antp|grep 9100 tcp6 0 0 :::9100 :::* LISTEN 42360/node_exporter tcp6 0 0 172.16.252.129:9100 172.16.252.128:42778 ESTABLISHED 42360/node_exporter
通过浏览器访问http://被监控端IP:9100/metrics就可以查看到 node_exporter在被监控端收集的监控信息
访问【http://172.16.252.129:9100/metrics】
但在S1服务器【http://172.16.252.128:9090/】--->Status--->Targes 看不到这个机器，需要修改S1服务器prometheus配置文件，重启生效。
在S1服务器操作如下
vim /usr/local/prometheus/prometheus.yml - job_name: 'node1' static_configs: - targets: ['172.16.252.129:9100'] 重启prometheus pkill prometheus
./prometheus --config.file="/usr/local/prometheus/prometheus.yml"
再访问【http://172.16.252.128:9090/】--->Status--->Targes，可以看到多一个node1机器。
三、安装mysqld_exporter，监控MySQL
说明 ：我的mysql装在S2服务器上了
下载地址：https://prometheus.io/download/#mysqld_exporter
在S2服务器操作，
[root@bogon ~]# wget https://github.com/prometheus/mysqld_exporter/releases/download/v0.12.1/mysqld_exporter-0.12.1.linux-amd64.tar.gz [root@bogon ~]# tar xvf mysqld_exporter-0.12.1.linux-amd64.tar.gz -C /usr/local/ [root@bogon ~]# cd /usr/local/ [root@bogon local]# mv mysqld_exporter-0.12.1.linux-amd64/ mysqld_exporter [root@bogon local]# cd mysqld_exporter/ [root@bogon mysqld_exporter]# ll total 14484 -rw-r--r--. 1 3434 3434 11325 Jul 29 2019 LICENSE -rwxr-xr-x. 1 3434 3434 14813452 Jul 29 2019 mysqld_exporter -rw-r--r--. 1 3434 3434 65 Jul 29 2019 NOTICE #提示：没有配置文件，需要自己编辑一个,需要先往数据库中创建用户:mysql_monitor 密码：123456 ,详细步骤不写了
grant select,replication client,process ON *.* to 'mysql_monitor'@'%' identified by '123456'; [root@bogon mysqld_exporter]# vim /usr/local/mysqld_exporter/.my.cnf [client] user=mysql_monitor password=123456
启动监控插件
nohup /usr/local/mysqld_exporter/mysqld_exporter --config.my-cnf=/usr/local/mysqld_exporter/.my.cnf &
查看进程
[root@bogon mysqld_exporter]# ps -ef|grep mysqld_exporter root 43184 43026 0 04:31 pts/1 00:00:00 /usr/local/mysqld_exporter/mysqld_exporter --config.my-cnf=/usr/local/mysqld_exporter/.my.cnf
占用的端口号是9104
[root@bogon mysqld_exporter]# netstat -antp|grep 9104 tcp6 0 0 :::9104 :::* LISTEN 43184/mysqld_export
通过这个连接可以看到采集到的数值【http://172.16.252.129:9104/metrics】
修改S1服务器prometheus配置，
vim /usr/local/prometheus/prometheus.yml - job_name: 's2_mysql' static_configs: - targets: ['172.16.252.129:9104']
重启prometheus服务
pkill prometheus
./prometheus --config.file="/usr/local/prometheus/prometheus.yml"
http://172.16.252.128:9090/targets
打开web界面，看到已经有s2_mysql这个数据库监控了
分享配置文件：
/home/xxx/prometheus/prometheus --config.file=/home/xxx/prometheus/prometheus.yml --storage.tsdb.path=/data/prometheus_data --storage.tsdb.retention.time=60d --storage.tsdb.wal-compression --web.enable-admin-api --log.level=info --web.enable-lifecycle --web.listen-address=0.0.0.0:32766
cat /home/xxx/prometheus/prometheus.yml global: scrape_interval: 1m scrape_timeout: 10s evaluation_interval: 15s scrape_configs: - job_name: prometheus honor_timestamps: true scrape_interval: 15s scrape_timeout: 10s metrics_path: /metrics scheme: http static_configs: - targets: - localhost:32766 - job_name: MySQL honor_timestamps: true scrape_interval: 1m scrape_timeout: 10s metrics_path: /metrics scheme: http relabel_configs: - source_labels: [__address__] separator: ; regex: (.*) target_label: __address__ replacement: $1 action: replace file_sd_configs: - files: - /home/xxx/prometheus/monitor_mysql.yml refresh_interval: 1m - job_name: MongoDB honor_timestamps: true scrape_interval: 1m scrape_timeout: 10s metrics_path: /metrics scheme: http static_configs: - targets: - 1.1.1.1:9114 labels: service_name: single-1.1.1.1 region: ID - targets: - 2.2.2.2:9115 labels: service_name: rs-3.3.3.3/8/11 region: ID - job_name: Redis honor_timestamps: true scrape_interval: 1m scrape_timeout: 10s metrics_path: /metrics scheme: http static_configs: - targets: - 4.4.4.4:9116 labels: service_name: single-4.4.4.4 region: ID - targets: - 5.5.5.5:9119 labels: service_name: single-5.5.5.5:6389 region: ID
cat /home/xxx/prometheus/monitor_mysql.yml - targets: - 1.1.1.1:9105 labels: service_name: master-1.1.1.1 region: ID - targets: - 2.2.2.2:9106 labels: service_name: slave-3.3.3.3 region: ID