installation requirements repmgr is developed and tested on Linux and OS X, but should work on any UNIX-like system supported by PostgreSQL itself. There is no support for Microsoft Windows. &repmgr; &repmgrversion; is compatible with all PostgreSQL versions from 9.3. See section &repmgr; compatibility matrix for an overview of version compatibility. If upgrading from &repmgr; 3.x, please see the section . All servers in the replication cluster must be running the same major version of PostgreSQL, and we recommend that they also run the same minor version. &repmgr; must be installed on each server in the replication cluster. If installing repmgr from packages, the package version must match the PostgreSQL version. If installing from source, &repmgr; must be compiled against the same major version. The same "major" &repmgr; version (e.g. &repmgrversion;.x) must be installed on all node in the replication cluster. We strongly recommend keeping all nodes on the same (preferably latest) "minor" &repmgr; version to minimize the risk of incompatibilities. If different "major" &repmgr; versions (e.g. 4.1.x and &repmgrversion;.x) are installed on different nodes, in the best case &repmgr; (in particular &repmgrd;) will not run. In the worst case, you will end up with a broken cluster. A dedicated system user for &repmgr; is not required; as many &repmgr; and &repmgrd; actions require direct access to the PostgreSQL data directory, these commands should be executed by the postgres user. See also Prerequisites for configuration for information on networking requirements. We recommend using a session multiplexer utility such as screen or tmux when performing long-running actions (such as cloning a database) on a remote server - this will ensure the &repmgr; action won't be prematurely terminated if your ssh session to the server is interrupted or closed. repmgr compatibility matrix compatibility matrix The following table provides an overview of which &repmgr; version supports which PostgreSQL version. &repmgr; version Supported? Latest release Supported PostgreSQL versions &repmgr; 5.x YES &repmgrversion; (&releasedate;) 9.3, 9.4, 9.5, 9.6, 10, 11, 12 &repmgr; 4.x NO 4.4 (2019-06-27) 9.3, 9.4, 9.5, 9.6, 10, 11 &repmgr; 3.x NO 3.3.2 (2017-05-30) 9.3, 9.4, 9.5, 9.6 &repmgr; 2.x NO 2.0.3 (2015-04-16) 9.0, 9.1, 9.2, 9.3, 9.4 The &repmgr; 2.x and 3.x series are no longer maintained or supported. We strongly recommend upgrading to the latest &repmgr; version. Following the release of &repmgr; 5.0, there will be no further releases of the &repmgr; 4.x series. Note that &repmgr; 5.x is an incremental development of the 4.x series and &repmgr; 4.x users should upgrade to this as soon as possible. PostgreSQL 9.3 repmgr support Note that some &repmgr; functionality is not available in PostgreSQL 9.3 and PostgreSQL 9.4: PostgreSQL 9.3 does not support replication slots, so corresponding &repmgr; functionality is not available. In PostgreSQL 9.3 and PostgreSQL 9.4, pg_rewind is not part of the core distribution. pg_rewind will need to be compiled separately to be able to use any &repmgr; functionality which takes advantage of it. PostgreSQL 9.3 has reached the end of its community support period (final release was 9.3.25 in November 2018) and will no longer be updated with security or bugfixes. PostgreSQL 9.4 has reached the end of its community support period (final release was 9.4.26 in February 2020) and will no longer be updated with security or bugfixes. We recommend that users of these versions migrate to a recent PostgreSQL version as soon as possible. For further details, see the PostgreSQL Versioning Policy.