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68 lines
2.3 KiB
Plaintext
68 lines
2.3 KiB
Plaintext
<sect1 id="install-requirements" xreflabel="installation requirements">
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<title>Requirements for installing repmgr</title>
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<para>
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repmgr is developed and tested on Linux and OS X, but should work on any
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UNIX-like system supported by PostgreSQL itself. There is no support for
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Microsoft Windows.
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</para>
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<para>
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From version 4.0, repmgr is compatible with all PostgreSQL versions from 9.4, including PostgreSQL 10.
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</para>
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<para>
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PostgreSQL 9.3 is supported by repmgr 3.3.
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</para>
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<note>
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<simpara>
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If upgrading from `repmgr 3`, please see the separate upgrade guide
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`doc/upgrading-from-repmgr3.md`.
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</simpara>
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</note>
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<para>
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All servers in the replication cluster must be running the same major version of
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PostgreSQL, and we recommend that they also run the same minor version.
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</para>
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<para>
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`repmgr` must be installed on each server in the replication cluster.
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If installing repmgr from packages, the package version must match the PostgreSQL
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version. If installing from source, repmgr must be compiled against the same
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major version.
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</para>
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<para>
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A dedicated system user for `repmgr` is *not* required; as many `repmgr` and
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`repmgrd` actions require direct access to the PostgreSQL data directory,
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these commands should be executed by the `postgres` user.
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</para>
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<para>
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Passwordless `ssh` connectivity between all servers in the replication cluster
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is not required, but is necessary in the following cases:
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<itemizedlist>
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<listitem>
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<simpara>if you need `repmgr` to copy configuration files from outside the PostgreSQL
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data directory (in which case `rsync` is also required)</simpara>
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</listitem>
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<listitem>
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<simpara>to perform switchover operations</simpara>
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</listitem>
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<listitem>
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<simpara>when executing `repmgr cluster matrix` and `repmgr cluster crosscheck`</simpara>
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</listitem>
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</itemizedlist>
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</para>
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<tip>
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<simpara>
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We recommend using a session multiplexer utility such as `screen` or
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`tmux` when performing long-running actions (such as cloning a database)
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on a remote server - this will ensure the `repmgr` action won't be prematurely
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terminated if your `ssh` session to the server is interrupted or closed.
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</simpara>
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</tip>
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</sect1>
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