repmgr cluster crosscheck repmgr cluster crosscheck repmgr cluster crosscheck cross-checks connections between each combination of nodes repmgr cluster crosscheck is similar to , but cross-checks connections between each combination of nodes. In "Example 3" in we have no information about the state of node3. However by running repmgr cluster crosscheck it's possible to get a better overview of the cluster situation: $ repmgr -f /etc/repmgr.conf cluster crosscheck Name | Id | 1 | 2 | 3 -------+----+----+----+---- node1 | 1 | * | * | x node2 | 2 | * | * | * node3 | 3 | * | * | * What happened is that repmgr cluster crosscheck merged its own repmgr cluster matrix with the repmgr cluster matrix output from node2; the latter is able to connect to node3 and therefore determine the state of outbound connections from that node.