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docs: add additional note about setting "wal_log_hints"

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Useful to reference this when discussing PostgreSQL configuration in
general.
This commit is contained in:
Ian Barwick
2017-11-29 11:22:12 +09:00
parent 50e9460b3e
commit e9cb61ae7a
2 changed files with 11 additions and 6 deletions
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15
doc/quickstart.sgml
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@@ -103,11 +103,11 @@
# ignores archiving. Use something more sensible. # ignores archiving. Use something more sensible.
archive_command = '/bin/true' archive_command = '/bin/true'
# If you have configured `pg_basebackup_options` # If you have configured "pg_basebackup_options"
# in `repmgr.conf` to include the setting `--xlog-method=fetch` (from # in "repmgr.conf" to include the setting "--xlog-method=fetch" (from
# PostgreSQL 10 `--wal-method=fetch`), *and* you have not set # PostgreSQL 10 "--wal-method=fetch"), *and* you have not set
# `restore_command` in `repmgr.conf`to fetch WAL files from another # "restore_command" in "repmgr.conf"to fetch WAL files from another
# source such as Barman, you'll need to set `wal_keep_segments` to a # source such as Barman, you'll need to set "wal_keep_segments" to a
# high enough value to ensure that all WAL files generated while # high enough value to ensure that all WAL files generated while
# the standby is being cloned are retained until the standby starts up. # the standby is being cloned are retained until the standby starts up.
# #
@@ -121,6 +121,11 @@
<command>include 'postgresql.replication.conf</command>. <command>include 'postgresql.replication.conf</command>.
</simpara> </simpara>
</tip> </tip>
<para>
Additionally, if you are intending to use <application>pg_rewind</application>,
and the cluster was not initialised using data checksums, you may want to consider enabling
<varname>wal_log_hints</varname>; for more details see <xref linkend="repmgr-node-rejoin-pg-rewind">.
</para>
</sect1> </sect1>
<sect1 id="quickstart-repmgr-user-database"> <sect1 id="quickstart-repmgr-user-database">

2
doc/repmgr-node-rejoin.sgml
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@@ -69,7 +69,7 @@
</tip> </tip>
</refsect1> </refsect1>
<refsect1 id="repmgr-node-rejoin-pg-rewind"> <refsect1 id="repmgr-node-rejoin-pg-rewind" xreflabel="Using pg_rewind">
<title>Using <command>pg_rewind</command></title> <title>Using <command>pg_rewind</command></title>
<para> <para>
<command>repmgr node rejoin</command> can optionally use <command>pg_rewind</command> to re-integrate a <command>repmgr node rejoin</command> can optionally use <command>pg_rewind</command> to re-integrate a