repmgr cluster show
repmgr cluster show
Displays information about each active node in the replication cluster. This
command polls each registered server and shows its role (primary /
standby / bdr) and status. It polls each server
directly and can be run on any node in the cluster; this is also useful when analyzing
connectivity from a particular node.
This command requires either a valid repmgr.conf file or a database
connection string to one of the registered nodes; no additional arguments are needed.
Example:
$ repmgr -f /etc/repmgr.conf cluster show
ID | Name | Role | Status | Upstream | Location | Connection string
----+-------+---------+-----------+----------+----------+-----------------------------------------
1 | node1 | primary | * running | | default | host=db_node1 dbname=repmgr user=repmgr
2 | node2 | standby | running | node1 | default | host=db_node2 dbname=repmgr user=repmgr
3 | node3 | standby | running | node1 | default | host=db_node3 dbname=repmgr user=repmgr
To show database connection errors when polling nodes, run the command in
--verbose mode.
cluster show accepts an optional parameter --csv, which
outputs the replication cluster's status in a simple CSV format, suitable for
parsing by scripts:
$ repmgr -f /etc/repmgr.conf cluster show --csv
1,-1,-1
2,0,0
3,0,1
The columns have following meanings:
node ID
availability (0 = available, -1 = unavailable)
recovery state (0 = not in recovery, 1 = in recovery, -1 = unknown)
Note that the availability is tested by connecting from the node where
repmgr cluster show is executed, and does not necessarily imply the node
is down. See and to get
a better overviews of connections between nodes.