Prometheus之redis告警rules配置

~# cat /usr/local/prometheus/rules/redis.yaml
groups:
- name: redisdown
  rules:
  - alert: RedisDown
    expr: redis_up == 0
    for: 1m
    labels:
      name: instance
      severity: Critical
    annotations:
      summary: " {{ $labels.alias }}"
      description: " 服务停止运行 "
      value: "{{ $value }}"
  - alert: Redis linked too many clients
    expr: redis_connected_clients / redis_config_maxclients * 100 > 80
    for: 1m
    labels:
      name: instance
      severity: Warning
    annotations:
      summary: " {{ $labels.alias }}"
      description: " Redis连接数超过最大连接数的80%. "
      value: "{{ $value }}"
  - alert: Redis linked
    expr: redis_connected_clients / redis_config_maxclients * 100 > 80
    for: 1m
    labels:
      name: instance
      severity: Warning
    annotations:
      summary: " {{ $labels.alias }}"
      description: " Redis连接数超过最大连接数的80%. "
      value: "{{ $value }}"
      
  - alert: ReplicationBroken
      expr: delta(redis_connected_slaves[1m]) < 0
      for: 5m
      labels:
        severity: critical
      annotations:
        summary: "Replication broken (instance {{ $labels.instance }})"
        description: "Redis instance lost a slave\n  VALUE = {{ $value }}\n  LABELS: {{ $labels }}"
        
  - alert: RejectedConnections
      expr: increase(redis_rejected_connections_total[1m]) > 0
      for: 5m
      labels:
        severity: critical
      annotations:
        summary: "Rejected connections (instance {{ $labels.instance }})"
        description: "Some connections to Redis has been rejected\n  VALUE = {{ $value }}\n  LABELS: {{ $labels }}"