groups:
- name: mysql.rules
  rules:
  - alert: MysqlDown
    expr: mysql_up == 0
    for: 1s
    labels:
      severity: critical
    annotations:
      title: 'MySQL down'
      description: "Mysql实例: 【{{ $labels.instance }}】, MySQL instance is down"

  - alert: MysqlTooManyConnections(>80%)
    expr: avg by (instance) (rate(mysql_global_status_threads_connected[1m])) / avg by (instance) (mysql_global_variables_max_connections) * 100 > 80
    for: 2m
    labels:
      severity: warning
    annotations:
      title: 'MySQL too many connections (> 80%)'
      description: "Mysql实例: 【{{ $labels.instance }}】, More than 80% of MySQL connections are in use, Current Value: {{ $value }}%"

  - alert: MysqlThreadsRunningHigh
    expr: mysql_global_status_threads_running > 80
    for: 2m
    labels:
      severity: warning
    annotations:
      title: 'MySQL Threads_Running High'
      description: "Mysql实例: 【{{ $labels.instance }}】, Threads_Running above the threshold(40), Current Value: {{ $value }}"

  - alert: MysqlTooManyClientThreadsActivity
    expr: mysql_global_status_threads_connected{instance !~ "10.xxx:3306||10.xxxx:3306"} > 120
    for: 2m
    labels:
      severity: warning
    annotations:
      title: 'Too many Client Thread activity'
      description: "Mysql实例:【{{ $labels.instance }}】, {{ $value }} Too many Client Thread activity"

  - alert: MysqlQpsHigh
    expr: sum by (instance) (rate(mysql_global_status_queries[2m])) > 500
    for: 2m
    labels:
      severity: warning
    annotations:
      title: 'MySQL QPS High'
      description: "Mysql实例: 【{{ $labels.instance }}】, MySQL QPS above 500, Current Value: {{ $value }}"

  - alert: MysqlSlowQueries
    expr: increase(mysql_global_status_slow_queries[1m]) > 0
    for: 2m
    labels:
      severity: warning
    annotations:
      title: 'MySQL slow queries'
      description: "Mysql实例: 【{{ $labels.instance }}】, has some new slow query."

  - alert: MysqlTooManyAbortedConnections
    expr: round(increase(mysql_global_status_aborted_connects[5m])) > 300
    for: 5m
    labels:
      severity: warning
    annotations:
      title: 'MySQL too many Aborted connections in 5 minutes'
      description: "Mysql实例: 【{{ $labels.instance }}】, {{ $value }} Aborted connections within 5 minutes"

  - alert: MysqlTooManyAbortedClients
    expr: round(increase(mysql_global_status_aborted_clients[120m])) > 300
    for: 2m
    labels:
      severity: warning
    annotations:
      title: 'MySQL too many Aborted connections in 2 hours'
      description: "Mysql实例: 【{{ $labels.instance }}】, {{ $value }} Aborted Clients within 2 hours"

  - alert: MysqlSlaveIoThreadNotRunning
    expr: mysql_slave_status_master_server_id > 0 and ON (instance) mysql_slave_status_slave_io_running == 0
    for: 1s
    labels:
      severity: critical
    annotations:
      title: 'MySQL Slave IO thread not running'
      description: "Mysql实例: 【{{ $labels.instance }}】, MySQL Slave IO thread not running"

  - alert: MysqlSlaveSqlThreadNotRunning
    expr: mysql_slave_status_master_server_id > 0 and ON (instance) mysql_slave_status_slave_sql_running == 0
    for: 1s
    labels:
      severity: critical
    annotations:
      title: 'MySQL Slave SQL thread not running'
      description: "Mysql实例: 【{{ $labels.instance }}】, MySQL Slave SQL thread not running"

  - alert: MysqlSlaveReplicationLag
    expr: mysql_slave_status_master_server_id > 0 and ON (instance) (mysql_slave_status_seconds_behind_master - mysql_slave_status_sql_delay) > 30
    for: 1m
    labels:
      severity: critical
    annotations:
      title: 'MySQL Slave replication lag'
      description: "Mysql实例: 【{{ $labels.instance }}】, MySQL replication lag"

  - alert: MysqlInnodbLogWaits
    expr: rate(mysql_global_status_innodb_log_waits[15m]) > 10
    for: 0m
    labels:
      severity: warning
    annotations:
      title: 'MySQL InnoDB log waits'
      description: "Mysql实例: 【{{ $labels.instance }}】, innodb log writes stalling"

  - alert: mysql_table_locks
    expr: increase(mysql_global_status_table_locks_waited{job="mysqld_exporter"}[2m])
    for: 0m
    labels:
      severity: warning
    annotations:
      title: 'MySQL table_locks'
      description: "Mysql实例: 【{{ $labels.instance }}】, mysql table locks"