repmgr node check

Description

Performs some health checks on a node from a replication perspective. This command must be run on the local node.

Example

       $ repmgr -f /etc/repmgr.conf node check
       Node "node1":
            Server role: OK (node is primary)
            Replication lag: OK (N/A - node is primary)
            WAL archiving: OK (0 pending files)
            Downstream servers: OK (2 of 2 downstream nodes attached)
            Replication slots: OK (node has no replication slots)
            Missing replication slots: OK (node has no missing replication slots)

Individual checks

Each check can be performed individually by supplying an additional command line parameter, e.g.:

        $ repmgr node check --role
        OK (node is primary)

Parameters for individual checks are as follows:

• --role: checks if the node has the expected role
• --replication-lag: checks if the node is lagging by more than replication_lag_warning or replication_lag_critical
• --archive-ready: checks for WAL files which have not yet been archived, and returns WARNING or CRITICAL if the number exceeds archive_ready_warning or archive_ready_critical respectively.
• --downstream: checks that the expected downstream nodes are attached
• --slots: checks there are no inactive replication slots
• --missing-slots: checks there are no missing replication slots

Output format

• --csv: generate output in CSV format (not available for individual checks)
• --nagios: generate output in a Nagios-compatible format

Exit codes

When executing repmgr node check with one of the individual checks listed above, repmgr will emit one of the following Nagios-style exit codes (even if --nagios is not supplied):

• 0: OK
• 1: WARNING
• 2: ERROR
• 3: UNKNOWN

Following exit codes can be emitted by repmgr status check if no individual check was specified.

See also

repmgr node status, repmgr cluster show