prometheus配置详情

https://prometheus.io/docs/prometheus/latest/configuration/configuration/

下面监控宿主机和容器的内存，CPU，磁盘等状态

groups:
- name: example #定义规则组
  rules:
  - alert: InstanceDown  #定义报警名称
    expr: up == 0   #Promql语句，触发规则
    for: 1m            # 一分钟
    labels:       #标签定义报警的级别和主机
      name: instance
      severity: Critical
    annotations:  #注解
      summary: " {{ $labels.appname }}" #报警摘要，取报警信息的appname名称
      description: " 服务停止运行 "   #报警信息
      value: "{{ $value }}%"  # 当前报警状态值
- name: Host
  rules:
  - alert: HostMemory Usage
    expr: (node_memory_MemTotal_bytes - (node_memory_MemFree_bytes + node_memory_Buffers_bytes + node_memory_Cached_bytes)) / node_memory_MemTotal_bytes * 100 >  80
    for: 1m
    labels:
      name: Memory
      severity: Warning
    annotations:
      summary: " {{ $labels.appname }} "
      description: "宿主机内存使用率超过80%."
      value: "{{ $value }}"
  - alert: HostCPU Usage
    expr: sum(avg without (cpu)(irate(node_cpu_seconds_total{mode!='idle'}[5m]))) by (instance,appname) > 0.65
    for: 1m
    labels:
      name: CPU
      severity: Warning
    annotations:
      summary: " {{ $labels.appname }} "
      description: "宿主机CPU使用率超过65%."
      value: "{{ $value }}"
  - alert: HostLoad 
    expr: node_load5 > 4
    for: 1m
    labels:
      name: Load
      severity: Warning
    annotations:
      summary: "{{ $labels.appname }} "
      description: " 主机负载5分钟超过4."
      value: "{{ $value }}"
  - alert: HostFilesystem Usage
    expr: 1-(node_filesystem_free_bytes / node_filesystem_size_bytes) >  0.8
    for: 1m
    labels:
      name: Disk
      severity: Warning
    annotations:
      summary: " {{ $labels.appname }} "
      description: " 宿主机 [ {{ $labels.mountpoint }} ]分区使用超过80%."
      value: "{{ $value }}%"
  - alert: HostDiskio
    expr: irate(node_disk_writes_completed_total{job=~"Host"}[1m]) > 10
    for: 1m
    labels:
      name: Diskio
      severity: Warning
    annotations:
      summary: " {{ $labels.appname }} "
      description: " 宿主机 [{{ $labels.device }}]磁盘1分钟平均写入IO负载较高."
      value: "{{ $value }}iops"
  - alert: Network_receive
    expr: irate(node_network_receive_bytes_total{device!~"lo|bond[0-9]|cbr[0-9]|veth.*|virbr.*|ovs-system"}[5m]) / 1048576  > 3 
    for: 1m
    labels:
      name: Network_receive
      severity: Warning
    annotations:
      summary: " {{ $labels.appname }} "
      description: " 宿主机 [{{ $labels.device }}] 网卡5分钟平均接收流量超过3Mbps."
      value: "{{ $value }}3Mbps"
  - alert: Network_transmit
    expr: irate(node_network_transmit_bytes_total{device!~"lo|bond[0-9]|cbr[0-9]|veth.*|virbr.*|ovs-system"}[5m]) / 1048576  > 3
    for: 1m
    labels:
      name: Network_transmit
      severity: Warning
    annotations:
      summary: " {{ $labels.appname }} "
      description: " 宿主机 [{{ $labels.device }}] 网卡5分钟内平均发送流量超过3Mbps."
      value: "{{ $value }}3Mbps"
- name: Container
  rules:
  - alert: ContainerCPU Usage
    expr: (sum by(name,instance) (rate(container_cpu_usage_seconds_total{image!=""}[5m]))*100) > 60
    for: 1m
    labels:
      name: CPU
      severity: Warning
    annotations:
      summary: "{{ $labels.name }} "
      description: " 容器CPU使用超过60%."
      value: "{{ $value }}%"
  - alert: ContainerMem Usage
#    expr: (container_memory_usage_bytes - container_memory_cache)  / container_spec_memory_limit_bytes   * 100 > 10  
    expr:  container_memory_usage_bytes{name=~".+"}  / 1048576 > 1024
    for: 1m
    labels:
      name: Memory
      severity: Warning
    annotations:
      summary: "{{ $labels.name }} "
      description: " 容器内存使用超过1GB."
      value: "{{ $value }}G"