PostgreSQL 12 High Availability Cookbook - Third Edition

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If you're tired of always checking the status of Pacemaker manually, there is a tool we can use instead. Much like top, which displays the current list of running processes, the crm_mon command monitors the status of a Pacemaker cluster and prints the same output as crm status. For our cluster in its current state, it looks like this:

This will refresh regularly and makes it easy to watch live transition states as Pacemaker performs actions related to cluster management. Feel free to keep this running in another Terminal window for the sake of convenience.