MySQL Slave IO thread not running critical
MySQL Slave IO thread not running on {{ $labels.instance }}
>>>
(
and ON (instance)
> 0 ) == 0
The query first ensures the instance is a replication slave (mysql_slave_status_master_server_id > 0) and then checks the mysql_slave_status_slave_io_running metric for that same instance. If the instance is a slave and the IO thread metric is 0, the expression evaluates to true and the alert is triggered.
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