mirror of
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Update pg_ctl ref page, help output, messages. Some repair to work better
with current postmaster.
This commit is contained in:
Peter Eisentraut
@ -1,42 +1,76 @@
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<!--
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$Header: /cvsroot/pgsql/doc/src/sgml/ref/pg_ctl-ref.sgml,v 1.3 2000/10/12 22:13:21 momjian Exp $
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$Header: /cvsroot/pgsql/doc/src/sgml/ref/pg_ctl-ref.sgml,v 1.4 2000/11/25 17:17:30 petere Exp $
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Postgres documentation
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-->
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<refentry id="app-pg-ctl">
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<docinfo>
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<date>2000-11-25</date>
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</docinfo>
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<refmeta>
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<refentrytitle id="app-pg-ctl-title">
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<application>pg_ctl</application>
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</refentrytitle>
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<refentrytitle id="app-pg-ctl-title"><application>pg_ctl</application></refentrytitle>
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<manvolnum>1</manvolnum>
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<refmiscinfo>Application</refmiscinfo>
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</refmeta>
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<refnamediv>
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<refname>
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<application>pg_ctl</application>
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</refname>
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<refpurpose>
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Starts, stops, and restarts postmaster
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</refpurpose>
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<refname>pg_ctl</refname>
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<refpurpose>Starts, stops, or restarts postmaster</refpurpose>
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</refnamediv>
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<refsynopsisdiv>
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<refsynopsisdivinfo>
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<date>2000-04-05</date>
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</refsynopsisdivinfo>
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<cmdsynopsis>
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<command>pg_ctl</command>
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<arg choice="plain">start</arg>
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<arg>-w</arg>
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<arg>-D <replaceable>datadir</replaceable></arg>
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<arg>-p <replaceable>path</replaceable></arg>
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<arg>-o <replaceable>options</replaceable></arg>
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<sbr>
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<command>pg_ctl</command>
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<arg choice="plain">stop</arg>
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<arg>-w</arg>
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<arg>-D <replaceable>datadir</replaceable></arg>
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<arg>-m
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<group choice="plain">
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<arg>s[mart]</arg>
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<arg>f[ast]</arg>
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<arg>i[mmediate]</arg>
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</group>
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</arg>
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<sbr>
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<command>pg_ctl</command>
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<arg choice="plain">restart</arg>
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<arg>-w</arg>
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<arg>-D <replaceable>datadir</replaceable></arg>
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<arg>-m
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<group choice="plain">
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<arg>s[mart]</arg>
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<arg>f[ast]</arg>
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<arg>i[mmediate]</arg>
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</group>
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</arg>
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<arg>-o <replaceable>options</replaceable></arg>
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<sbr>
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<command>pg_ctl</command>
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<arg choice="plain">status</arg>
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<arg>-D <replaceable>datadir</replaceable></arg>
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</cmdsynopsis>
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</refsynopsisdiv>
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<synopsis>
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pg_ctl [-w] [-D <replaceable class="parameter">datadir</replaceable>][-p <replaceable class="parameter">path</replaceable>] [-o "<replaceable class="parameter">options</replaceable>"] start
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pg_ctl [-w] [-D <replaceable class="parameter">datadir</replaceable>] [-m [s[mart]|f[ast]|i[mmediate]]] stop
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pg_ctl [-w] [-D <replaceable class="parameter">datadir</replaceable>] [-m [s[mart]|f[ast]|i[mmediate]]
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[-o "<replaceable class="parameter">options</replaceable>"] restart
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pg_ctl [-D <replaceable class="parameter">datadir</replaceable>] status
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</synopsis>
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<refsect2 id="R2-APP-PGCTL-1">
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<title>
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Inputs
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</title>
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<refsect1 id="app-pg-ctl-description">
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<title>Description</title>
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<para>
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<application>pg_ctl</application> is a utility for starting,
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stopping, or restarting the <xref linkend="app-postmaster"
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endterm="app-postmaster-title">, or displaying the status of a
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running postmaster.
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</para>
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<refsect2 id="app-pg-ctl-options">
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<title>Options</title>
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<para>
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<variablelist>
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@ -44,8 +78,9 @@ pg_ctl [-D <replaceable class="parameter">datadir</replaceable>] status
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<term>-w</term>
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<listitem>
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<para>
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Wait for the database server to come up, by
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watching for creation of the pid file (PGDATA/postmaster.pid).
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Wait for the database server to come up, by watching for
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creation of the pid file
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(<filename><replaceable>PGDATA</replaceable>/postmaster.pid</filename>).
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Times out after 60 seconds.
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</para>
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</listitem>
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@ -55,7 +90,9 @@ pg_ctl [-D <replaceable class="parameter">datadir</replaceable>] status
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<term>-D <replaceable class="parameter">datadir</replaceable></term>
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<listitem>
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<para>
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Specifies the database location for this database installation.
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Specifies the file system location of the database files. If
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this is omitted, the environment variable
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<envar>PGDATA</envar> is used.
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</para>
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</listitem>
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</varlistentry>
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@ -64,13 +101,18 @@ pg_ctl [-D <replaceable class="parameter">datadir</replaceable>] status
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<term>-p <replaceable class="parameter">path</replaceable></term>
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<listitem>
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<para>
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Specifies the path to the postmaster image.
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Specifies the location of the <filename>postmaster</filename>
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executable. By default the postmaster is taken from the same
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directory as pg_ctl, or failing that, the hard-wired
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installation directory. It is not necessary to use this
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option unless you are doing something unusual and get errors
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that the postmaster was not found.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term>-o "<replaceable class="parameter">options</replaceable>"</term>
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<term>-o <replaceable class="parameter">options</replaceable></term>
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<listitem>
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<para>
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Specifies options to be passed directly to
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@ -95,8 +137,8 @@ pg_ctl [-D <replaceable class="parameter">datadir</replaceable>] status
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<term>s</term>
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<listitem>
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<para>
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smart mode waits for all
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the clients to logout. This is the default.
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Smart mode waits for all the clients to disconnect. This
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is the default.
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</para>
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</listitem>
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</varlistentry>
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@ -106,8 +148,8 @@ pg_ctl [-D <replaceable class="parameter">datadir</replaceable>] status
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<term>f</term>
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<listitem>
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<para>
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Fast mode sends SIGTERM to the backends; that means
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active transactions get rolled back.
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Fast mode does not wait for clients to disconnect. All
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active transactions will be rolled back.
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</para>
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</listitem>
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</varlistentry>
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@ -117,9 +159,8 @@ pg_ctl [-D <replaceable class="parameter">datadir</replaceable>] status
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<term>i</term>
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<listitem>
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<para>
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Immediate mode sends SIGUSR1
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to the backends and lets them abort. In this case, database recovery
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will be necessary on the next start-up.
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Immediate mode will abort without complete shutdown. This
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will lead to a recovery run on restart.
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</para>
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</listitem>
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</varlistentry>
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@ -150,8 +191,8 @@ pg_ctl [-D <replaceable class="parameter">datadir</replaceable>] status
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<term>restart</term>
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<listitem>
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<para>
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Restart the <application>postmaster</application>, performing
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a stop/start sequence.
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Stop the <application>postmaster</application>, if one is running,
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and then start it again.
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</para>
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</listitem>
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</varlistentry>
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@ -168,229 +209,107 @@ pg_ctl [-D <replaceable class="parameter">datadir</replaceable>] status
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</para>
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</refsect2>
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<refsect2 id="R2-APP-PGCTL-2">
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<refsect2info>
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<date>1999-11-07</date>
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</refsect2info>
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<title>
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Outputs
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</title>
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<para>
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<variablelist>
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<varlistentry>
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<term><computeroutput>pg_ctl: postmaster is <replaceable>state</replaceable> (pid: <replaceable>#</replaceable>)</computeroutput></term>
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<listitem>
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<para>
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Postmaster status.
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</para>
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</listitem>
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</varlistentry>
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</variablelist>
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<refsect2>
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<title>Files</title>
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If there is an error condition, the backend error message will be displayed.
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<para>
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If the file <filename>postmaster.opts.default</filename> exists in
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the data directory, the contents of the file will be passed as
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options to the <application>postmaster</application>, unless
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overridden by the <option>-o</option> option.
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</para>
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</refsect2>
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</refsynopsisdiv>
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<refsect1 id="R1-APP-PGCTL-1">
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<title>
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Description
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</title>
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<para>
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<application>pg_ctl</application> is a utility for starting,
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stopping or restarting <application>postmaster</application>.
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</para>
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</refsect1>
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<refsect1 id="R1-APP-PGCTL-2">
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<title>
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Usage
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</title>
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<title>Usage</title>
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<refsect2 id="R2-APP-PGCTL-3">
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<title>
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Starting postmaster
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</title>
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<title>Starting the postmaster</title>
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<para>
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To start up <application>postmaster</application>:
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<programlisting>
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$ pg_ctl start
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</programlisting>
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<screen>
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<prompt>$</prompt> <userinput>pg_ctl start</userinput>
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</screen>
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</para>
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<para>
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If -w is supplied, pg_ctl waits for the database server to come up, by
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watching for creation of the pid file (PGDATA/postmaster.pid), for up
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to 60 seconds.
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</para>
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<para>
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Parameters to invoke <application>postmaster</application> are
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taken from the following sources:
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<itemizedlist>
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<listitem>
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<para>
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Path to postmaster: found in the command search path.
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</para>
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</listitem>
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<listitem>
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<para>
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Database directory: <envar>PGDATA</envar> environment variable.
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</para>
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</listitem>
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<listitem>
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<para>
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Other parameters:
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<filename><envar>PGDATA</envar>/postmaster.opts.default</filename>.
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</para>
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</listitem>
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</itemizedlist>
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</para>
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<para>
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<filename>postmaster.opts.default</filename> contains parameters
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for <application>postmaster</application>.
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</para>
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<para>
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Note that <filename>postmaster.opts.default</filename> is
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installed by <application>initdb</application> from
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<filename>lib/postmaster.opts.default.sample</filename>
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under the <productname>Postgres</productname> installation
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directory (<filename>lib/postmaster.opts.default.sample</filename>
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is copied from
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<filename>src/bin/pg_ctl/postmaster.opts.default.sample</filename>
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while installing <productname>Postgres</productname>).
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</para>
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<para>
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To override the default parameters you can use <option>-D</option>,
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<option>-p</option> and <option>-o</option> options.
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</para>
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<para>
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An example of starting the
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<application>postmaster</application>, blocking until
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postmaster comes up is:
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<programlisting>
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$ pg_ctl -w start
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</programlisting>
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</para>
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<para>
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To specify the <application>postmaster</application> binary path,
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try:
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<programlisting>
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$ pg_ctl -p /usr/local/pgsql/bin/postmaster start
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</programlisting>
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An example of starting the <application>postmaster</application>,
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blocking until postmaster comes up is:
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<screen>
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<prompt>$</prompt> <userinput>pg_ctl -w start</userinput>
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</screen>
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</para>
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<para>
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For a <application>postmaster</application> using port 5433, and
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running without <function>fsync</function>, use:
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<programlisting>
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$ pg_ctl -o "-o -F -p 5433" start
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</programlisting>
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<screen>
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<prompt>$</prompt> <userinput>pg_ctl -o "-F -p 5433" start</userinput>
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</screen>
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</para>
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</refsect2>
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<refsect2 id="R2-APP-PGCTL-4">
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<title>
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Stopping postmaster
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</title>
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<title>Stopping the postmaster</title>
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<para>
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<programlisting>
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$ pg_ctl stop
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</programlisting>
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<screen>
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<prompt>$</prompt> <userinput>pg_ctl stop</userinput>
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</screen>
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stops postmaster. Using the <option>-m</option> switch allows one
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to control <emphasis>how</emphasis> the backend shuts down.
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<option>-w</option>
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waits for postmaster to shut down.
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<option>-m</option> specifies the shut down mode.
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<option>-w</option> waits for postmaster to shut down.
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</para>
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</refsect2>
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<refsect2 id="R2-APP-PGCTL-5">
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<title>
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Restarting postmaster
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</title>
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<title>Restarting the postmaster</title>
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<para>
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This is almost equivalent to stopping the
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<application>postmaster</application> then starting it
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again except that the parameters used before stopping
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it would be used too. This is done by saving them in
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$<envar>PGDATA</envar>/postmaster.opts file.
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<option>-w</option>, <option>-D</option>, <option>-m</option>,
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<option>-fast</option>, <option>-immediate</option> and
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<option>-o</option>
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can also be used in the restarting mode and they have the same meanings as
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described above.
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</para>
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<para>
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To restart <application>postmaster</application> in the simplest
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form:
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<programlisting>
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$ pg_ctl restart
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</programlisting>
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<application>postmaster</application> then starting it again
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except that pg_ctl saves and reuses the command line options that
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were passed to the previously running instance. To restart
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<application>postmaster</application> in the simplest form:
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<screen>
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<prompt>$</prompt> <userinput>pg_ctl restart</userinput>
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</screen>
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</para>
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<para>
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To restart <application>postmaster</application>,
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waiting for it to shut down and to come up:
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<programlisting>
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$ pg_ctl -w restart
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</programlisting>
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<screen>
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<prompt>$</prompt> <userinput>pg_ctl -w restart</userinput>
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</screen>
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</para>
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<para>
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To restart using port 5433 and disabling fsync after restarting:
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<programlisting>
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$ pg_ctl -o "-o -F -p 5433" restart
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</programlisting>
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<screen>
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<prompt>$</prompt> <userinput>pg_ctl -o "-F -p 5433" restart</userinput>
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</screen>
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</para>
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</refsect2>
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<refsect2 id="R2-APP-PGCTL-6">
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<title>
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postmaster status
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</title>
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<title>Showing postmaster status</title>
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<para>
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To get status information from postmaster:
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<programlisting>
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$ pg_ctl status
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</programlisting>
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</para>
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<para>
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Here is a sample output from <application>pg_ctl</application>:
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<programlisting>
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Here is a sample status output from
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<application>pg_ctl</application>:
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<screen>
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<prompt>$</prompt> <userinput>pg_ctl status</userinput>
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<computeroutput>
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pg_ctl: postmaster is running (pid: 13718)
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options are:
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/usr/local/src/pgsql/current/bin/postmaster
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-p 5433
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-D /usr/local/src/pgsql/current/data
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-B 64
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-b /usr/local/src/pgsql/current/bin/postgres
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-N 32
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-o '-F'
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</programlisting>
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Command line was:
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/usr/local/pgsql/bin/postmaster '-D' '/usr/local/pgsql/data' '-p' '5433' '-B' '128'
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</computeroutput>
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</screen>
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This is the command line that would be invoked in restart mode.
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</para>
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</refsect2>
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</refsect1>
|
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Reference in New Issue
Block a user