prometheus linux系统告警规则 实例

#prometheus linux系统告警规则 实例

根据实际情况修改参数

 #rules.linux.yml
groups:
- name: linux
  rules:
  - alert: Node-Down #告警名称
    expr: up == 0
    for: 1m #持续多久后发送
    labels:
      severity: warning
    annotations: #信息
      summary: "Node has been down"
      description: "has been down "

  - alert: "内存使用率过高"
    expr: round(100- node_memory_MemAvailable_bytes/node_memory_MemTotal_bytes*100) > 80
    for: 1m
    labels:
      severity: warning
    annotations:
      summary: "内存使用率过高"
      description: "当前使用率{{ $value }}%"

  - alert: "CPU使用率过高"
    expr: round(100 - ((avg by (instance,job)(irate(node_cpu_seconds_total{mode="idle",instance!~'bac-.*'}[5m]))) *100)) > 80
    for: 2m
    labels:
      severity: warning
    annotations:
      summary: "CPU使用率过高"
      description: "当前使用率{{ $value }}%"

  - alert: "磁盘使用率过高"
    expr: round(100-100*(node_filesystem_avail_bytes{fstype=~"ext4|xfs"} / node_filesystem_size_bytes{fstype=~"ext4|xfs"})) > 80
    for: 15s
    labels:
      severity: warning
    annotations:
      summary: "磁盘使用率过高"
      description: "当前磁盘{{$labels.mountpoint}} 使用率{{ $value }}%"

  - alert: "分区容量过低"
    expr: round(node_filesystem_avail_bytes{fstype=~"ext4|xfs",instance!~"testnode",mountpoint!~"/boot.*"}/1024/1024/1024) < 10
    for: 15s
    labels:
      severity: warning
    annotations:
      summary: "分区容量过低"
      description: "当前分区{{$labels.mountpoint}} 容量{{ $value }}GB"

  - alert: "网络流出速率过高"
    expr: round(irate(node_network_receive_bytes_total{instance!~"data.*",device!~'tap.*|veth.*|br.*|docker.*|vir.*|lo.*|vnet.*'}[1m])/1024) > 2048
    for: 1m
    labels:
      severity: warning
    annotations:
      summary: "网络流出速率过高"
      description: "当前速率{{ $value }}KB/s"