configuration prerequisites configuration ssh Following software must be installed on both servers: PostgreSQL repmgr At network level, connections between the PostgreSQL port (default: 5432) must be possible between all nodes. Passwordless SSH connectivity between all servers in the replication cluster is not required, but is necessary in the following cases: if you need &repmgr; to copy configuration files from outside the PostgreSQL data directory (as is the case with e.g. Debian packages); in this case rsync must also be installed on all servers. to perform switchover operations when executing repmgr cluster matrix and repmgr cluster crosscheck Consider setting ConnectTimeout to a low value in your SSH configuration. This will make it faster to detect any SSH connection errors. &configuration-file; &configuration-file-required-settings; &configuration-file-log-settings; &configuration-file-service-commands; configuration database user permissions &repmgr; will create an extension database containing objects for administering &repmgr; metadata. The user defined in the conninfo setting must be able to access all objects. Additionally, superuser permissions are required to install the &repmgr; extension. The easiest way to do this is create the &repmgr; user as a superuser, however if this is not desirable, the &repmgr; user can be created as a normal user and a superuser specified with --superuser when registering a &repmgr; node.