mirror of https://github.com/postgres/postgres
Make -w the default for shut down, add -W option to specify no wait.
Add -l option to name log file. Set umask to 077. Proper file descriptor redirection to allow postmaster to detach from shell's process group. Add -s option to turn off informational messages.
This commit is contained in:
Peter Eisentraut
parent
e58775ee75
commit
088c0b9546
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@ -1,11 +1,11 @@
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<!--
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$Header: /cvsroot/pgsql/doc/src/sgml/ref/pg_ctl-ref.sgml,v 1.5 2000/12/25 23:15:26 petere Exp $
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$Header: /cvsroot/pgsql/doc/src/sgml/ref/pg_ctl-ref.sgml,v 1.6 2001/02/08 19:39:24 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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<date>2001-02-08</date>
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</docinfo>
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<refmeta>
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@ -25,12 +25,13 @@ Postgres documentation
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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>-l <replaceable>filename</replaceable></arg>
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<arg>-o <replaceable>options</replaceable></arg>
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<arg>-p <replaceable>path</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>-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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@ -64,8 +65,52 @@ Postgres documentation
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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">, or
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displaying the status of a running postmaster.
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stopping, or restarting <xref linkend="app-postmaster">, the
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<productname>PostgreSQL</productname> backend server, or displaying
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the status of a running postmaster. Although the postmaster can be
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started manually, <application>pg_ctl</application> encapulates
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tasks such as redirecting log output, properly detaching from the
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terminal and process group, and additionally provides an option for
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controlled shut down.
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</para>
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<para>
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In <option>start</option> mode, a new postmaster is launched. The
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server is started in the background, the standard input attached to
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<filename>/dev/null</filename>. The standard output and standard
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error are either appended to a log file, if the <option>-l</option>
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option is used, or are redirected to
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<application>pg_ctl</application>'s standard output (not standard
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error). If no log file is chosen, the standard output of
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<application>pg_ctl</application> should be redirected to a file or
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piped to another process, for example a log rotating program,
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otherwise the postmaster will write its output the the controlling
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terminal (from the background) and will not leave the shell's
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process group.
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</para>
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<para>
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In <option>stop</option> mode, the postmaster that is running on
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the specified data directory is shut down. Three different
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shutdown methods can be selected with the <option>-m</option>
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option: <quote>Smart</quote> mode waits for all the clients to
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disconnect. This is the default. <quote>Fast</quote> mode does
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not wait for clients to disconnect. All active transactions will
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be rolled back. <quote>Immediate</quote> mode will abort without
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complete shutdown. This will lead to a recovery run on restart.
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By the default, stop mode waits for the shutdown to complete.
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</para>
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<para>
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<option>restart</option> mode effectively executes a stop followed
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by a start. This allows the changing of postmaster command line
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options.
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</para>
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<para>
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<option>status</option> mode checks whether a postmaster is running
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and if so displays the <acronym>PID</acronym> and the command line
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options that were used to invoke it.
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</para>
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<refsect2 id="app-pg-ctl-options">
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@ -73,18 +118,6 @@ Postgres documentation
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<para>
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<variablelist>
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<varlistentry>
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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 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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</varlistentry>
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<varlistentry>
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<term>-D <replaceable class="parameter">datadir</replaceable></term>
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<listitem>
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@ -97,15 +130,25 @@ Postgres documentation
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</varlistentry>
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<varlistentry>
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<term>-p <replaceable class="parameter">path</replaceable></term>
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<term>-l <replaceable class="parameter">filename</replaceable></term>
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<listitem>
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<para>
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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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Append the server log output to
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<replaceable>filename</replaceable>. If the file does not
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exist, it is created. The umask is set to 077, so access to
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the log file from other users is disallowed by default.
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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>-m <replaceable class="parameter">mode</replaceable></term>
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<listitem>
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<para>
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Specifies the shutdown mode. <replaceable>mode</replaceable>
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may be <literal>smart</literal>, <literal>fast</literal>, or
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<literal>immediate</literal>, or the first letter of one of
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these three.
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</para>
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</listitem>
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</varlistentry>
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@ -125,82 +168,35 @@ Postgres documentation
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</varlistentry>
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<varlistentry>
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<term>-m <replaceable class="parameter">mode</replaceable></term>
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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 shutdown mode.
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<variablelist>
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<varlistentry>
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<term>smart</term>
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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 the clients to disconnect. This
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is the default.
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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>fast</term>
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<term>f</term>
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<term>-w</term>
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<listitem>
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<para>
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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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Wait for the start or stutdown to complete. Times out after
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60 seconds. This is the default for shutdowns.
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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>immediate</term>
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<term>i</term>
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<term>-W</term>
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<listitem>
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<para>
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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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</variablelist>
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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>start</term>
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<listitem>
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<para>
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Start up <application>postmaster</application>.
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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>stop</term>
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<listitem>
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<para>
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Shut down <application>postmaster</application>.
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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>restart</term>
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<listitem>
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<para>
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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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<varlistentry>
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<term>status</term>
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<listitem>
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<para>
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Show the current state of <application>postmaster</application>.
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Do not wait for start or shutdown to complete. This is the
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default for starts and restarts.
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</para>
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</listitem>
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</varlistentry>
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@ -223,7 +219,7 @@ Postgres documentation
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<refsect1 id="R1-APP-PGCTL-2">
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<title>Usage</title>
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<title>Examples</title>
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<refsect2 id="R2-APP-PGCTL-3">
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<title>Starting the postmaster</title>
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@ -260,7 +256,6 @@ Postgres documentation
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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> waits for postmaster to shut down.
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</para>
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</refsect2>
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@ -312,6 +307,25 @@ Command line was:
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</para>
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</refsect2>
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</refsect1>
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<refsect1>
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<title>Bugs</title>
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<para>
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Waiting for complete start is not a well-defined operation and may
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fail if access control is set up in way that a local client cannot
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connect without manual interaction. It should be avoided.
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</para>
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</refsect1>
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<refsect1>
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<title>See Also</title>
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<para>
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<xref linkend="app-postmaster">, <citetitle>PostgreSQL Administrator's Guide</citetitle>
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</para>
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</refsect1>
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</refentry>
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<!-- Keep this comment at the end of the file
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|
|
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@ -4,11 +4,11 @@
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# pg_ctl.sh--
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# Start/Stop/Restart/Report status of postmaster
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#
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# Copyright (c) 2000, PostgreSQL Global Development Group
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# Copyright (c) 2001 PostgreSQL Global Development Group
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#
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#
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# IDENTIFICATION
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# $Header: /cvsroot/pgsql/src/bin/pg_ctl/Attic/pg_ctl.sh,v 1.17 2000/12/30 06:10:43 ishii Exp $
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# $Header: /cvsroot/pgsql/src/bin/pg_ctl/Attic/pg_ctl.sh,v 1.18 2001/02/08 19:39:24 petere Exp $
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#
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#-------------------------------------------------------------------------
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|
@ -19,20 +19,29 @@ $CMDNAME is a utility to start, stop, restart, and report the status
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|||
of a PostgreSQL server.
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|
||||
Usage:
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||||
$CMDNAME start [-w] [-D DATADIR] [-p PATH-TO-POSTMASTER] [-o \"OPTIONS\"]
|
||||
$CMDNAME stop [-w] [-D DATADIR] [-m SHUTDOWN-MODE]
|
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$CMDNAME restart [-w] [-D DATADIR] [-m SHUTDOWN-MODE] [-o \"OPTIONS\"]
|
||||
$CMDNAME start [-w] [-D DATADIR] [-s] [-l FILENAME] [-o \"OPTIONS\"]
|
||||
$CMDNAME stop [-W] [-D DATADIR] [-s] [-m SHUTDOWN-MODE]
|
||||
$CMDNAME restart [-w] [-D DATADIR] [-s] [-m SHUTDOWN-MODE] [-o \"OPTIONS\"]
|
||||
$CMDNAME status [-D DATADIR]
|
||||
|
||||
Options:
|
||||
Common options:
|
||||
-D DATADIR Location of the database storage area
|
||||
-m SHUTDOWN-MODE May be 'smart', 'fast', or 'immediate'
|
||||
-s Only print errors, no informational messages
|
||||
-w Wait until operation completes
|
||||
-W Do not wait until operation completes
|
||||
(The default is to wait for shutdown, but not for start or restart.)
|
||||
|
||||
If the -D option is omitted, the environment variable PGDATA is used.
|
||||
|
||||
Options for start or restart:
|
||||
-l FILENAME Write (or append) server log to FILENAME. The
|
||||
use of this option is highly recommended.
|
||||
-o OPTIONS Command line options to pass to the postmaster
|
||||
(PostgreSQL server executable)
|
||||
-p PATH-TO-POSTMASTER Normally not necessary
|
||||
-w Wait until operation completes
|
||||
|
||||
If the -D option is omitted, the environment variable PGDATA is used.
|
||||
Options for stop or restart:
|
||||
-m SHUTDOWN-MODE May be 'smart', 'fast', or 'immediate'
|
||||
|
||||
Shutdown modes are:
|
||||
smart Quit after all clients have disconnected
|
||||
|
|
@ -50,6 +59,9 @@ Try '$CMDNAME --help' for more information."
|
|||
bindir='@bindir@'
|
||||
VERSION='@VERSION@'
|
||||
|
||||
# protect the log file
|
||||
umask 077
|
||||
|
||||
# Check for echo -n vs echo \c
|
||||
|
||||
if echo '\c' | grep -s c >/dev/null 2>&1
|
||||
|
|
@ -96,8 +108,11 @@ fi
|
|||
|
||||
po_path="$PGPATH/postmaster"
|
||||
|
||||
# set default shutdown signal
|
||||
sig="-TERM"
|
||||
wait=
|
||||
wait_seconds=60
|
||||
logfile=
|
||||
silence_echo=
|
||||
shutdown_mode=smart
|
||||
|
||||
while [ "$#" -gt 0 ]
|
||||
do
|
||||
|
|
@ -114,35 +129,35 @@ do
|
|||
shift
|
||||
PGDATA="$1"
|
||||
;;
|
||||
-p)
|
||||
shift
|
||||
po_path="$1"
|
||||
-l)
|
||||
logfile=$2
|
||||
shift;;
|
||||
-l*)
|
||||
logfile=`echo "$1" | sed 's/^-l//'`
|
||||
;;
|
||||
-m)
|
||||
shift
|
||||
case $1 in
|
||||
s|smart)
|
||||
;;
|
||||
f|fast)
|
||||
sig="-INT"
|
||||
;;
|
||||
i|immediate)
|
||||
sig="-QUIT"
|
||||
;;
|
||||
*)
|
||||
echo "$CMDNAME: wrong shutdown mode: $1" 1>&2
|
||||
echo "$advice" 1>&2
|
||||
exit 1
|
||||
;;
|
||||
esac
|
||||
;;
|
||||
-w)
|
||||
wait=1
|
||||
shutdown_mode=$2
|
||||
shift;;
|
||||
-m*)
|
||||
shutdown_mode=`echo "$1" | sed 's/^-m//'`
|
||||
;;
|
||||
-o)
|
||||
shift
|
||||
POSTOPTS="$1"
|
||||
;;
|
||||
-p)
|
||||
shift
|
||||
po_path="$1"
|
||||
;;
|
||||
-s)
|
||||
silence_echo=:
|
||||
;;
|
||||
-w)
|
||||
wait=yes
|
||||
;;
|
||||
-W)
|
||||
wait=no
|
||||
;;
|
||||
-*)
|
||||
echo "$CMDNAME: invalid option: $1" 1>&2
|
||||
echo "$advice" 1>&2
|
||||
|
|
@ -181,20 +196,47 @@ if [ -z "$PGDATA" ];then
|
|||
exit 1
|
||||
fi
|
||||
|
||||
if [ -z "$wait" ]; then
|
||||
case $op in
|
||||
start) wait=no;;
|
||||
stop) wait=yes;;
|
||||
restart) wait=no;; # must wait on shutdown anyhow
|
||||
esac
|
||||
fi
|
||||
|
||||
|
||||
case $shutdown_mode in
|
||||
s|smart)
|
||||
sig="-TERM"
|
||||
;;
|
||||
f|fast)
|
||||
sig="-INT"
|
||||
;;
|
||||
i|immediate)
|
||||
sig="-QUIT"
|
||||
;;
|
||||
*)
|
||||
echo "$CMDNAME: invalid shutdown mode: $1" 1>&2
|
||||
echo "$advice" 1>&2
|
||||
exit 1
|
||||
;;
|
||||
esac
|
||||
|
||||
|
||||
DEFPOSTOPTS=$PGDATA/postmaster.opts.default
|
||||
POSTOPTSFILE=$PGDATA/postmaster.opts
|
||||
PIDFILE=$PGDATA/postmaster.pid
|
||||
|
||||
if [ $op = "status" ];then
|
||||
if [ -f $PIDFILE ];then
|
||||
PID=`head -1 $PIDFILE`
|
||||
PID=`sed -n 1p $PIDFILE`
|
||||
if [ $PID -lt 0 ];then
|
||||
PID=`expr 0 - $PID`
|
||||
echo "$CMDNAME: postgres is running (pid: $PID)"
|
||||
else
|
||||
echo "$CMDNAME: postmaster is running (pid: $PID)"
|
||||
echo "Command line was:"
|
||||
echo "`cat $POSTOPTSFILE`"
|
||||
cat "$POSTOPTSFILE"
|
||||
fi
|
||||
exit 0
|
||||
else
|
||||
|
|
@ -205,29 +247,29 @@ fi
|
|||
|
||||
if [ $op = "stop" -o $op = "restart" ];then
|
||||
if [ -f $PIDFILE ];then
|
||||
PID=`head -1 $PIDFILE`
|
||||
PID=`sed -n 1p $PIDFILE`
|
||||
if [ $PID -lt 0 ];then
|
||||
PID=`expr 0 - $PID`
|
||||
echo "$CMDNAME: Cannot restart postmaster. postgres is running (pid: $PID)"
|
||||
echo "Please terminate postgres and try again"
|
||||
echo "$CMDNAME: Cannot restart postmaster. postgres is running (pid: $PID)" 1>&2
|
||||
echo "Please terminate postgres and try again." 1>&2
|
||||
exit 1
|
||||
fi
|
||||
|
||||
kill $sig $PID
|
||||
|
||||
# wait for postmaster to shut down
|
||||
if [ "$wait" = 1 -o $op = "restart" ];then
|
||||
if [ "$wait" = yes -o "$op" = restart ];then
|
||||
cnt=0
|
||||
$ECHO_N "Waiting for postmaster to shut down.."$ECHO_C
|
||||
$silence_echo $ECHO_N "waiting for postmaster to shut down..."$ECHO_C
|
||||
|
||||
while :
|
||||
do
|
||||
if [ -f $PIDFILE ];then
|
||||
$ECHO_N "."$ECHO_C
|
||||
$silence_echo $ECHO_N "."$ECHO_C
|
||||
cnt=`expr $cnt + 1`
|
||||
if [ $cnt -gt 60 ];then
|
||||
echo "failed."
|
||||
echo "postmaster does not shut down."
|
||||
if [ $cnt -gt $wait_seconds ];then
|
||||
$silence_echo echo " failed"
|
||||
echo "$CMDNAME: postmaster does not shut down" 1>&2
|
||||
exit 1
|
||||
fi
|
||||
else
|
||||
|
|
@ -235,26 +277,35 @@ if [ $op = "stop" -o $op = "restart" ];then
|
|||
fi
|
||||
sleep 1
|
||||
done
|
||||
echo "done."
|
||||
$silence_echo echo "done"
|
||||
fi
|
||||
$silence_echo echo "postmaster successfully shut down"
|
||||
|
||||
echo "postmaster successfully shut down."
|
||||
|
||||
else
|
||||
echo "$CMDNAME: cannot find $PIDFILE"
|
||||
echo "Is postmaster running?"
|
||||
else # ! -f $PIDFILE
|
||||
echo "$CMDNAME: cannot find $PIDFILE" 1>&2
|
||||
echo "Is postmaster running?" 1>&2
|
||||
if [ $op = "restart" ];then
|
||||
echo "starting postmaster anyway..."
|
||||
echo "starting postmaster anyway" 1>&2
|
||||
else
|
||||
exit 1
|
||||
fi
|
||||
fi
|
||||
fi
|
||||
fi # stop or restart
|
||||
|
||||
if [ $op = "start" -o $op = "restart" ];then
|
||||
if [ -f $PIDFILE ];then
|
||||
echo "$CMDNAME: It seems another postmaster is running. Trying to start postmaster anyway."
|
||||
pid=`head -1 $PIDFILE`
|
||||
echo "$CMDNAME: It seems another postmaster is running. Trying to start postmaster anyway." 1>&2
|
||||
pid=`sed -n 1p $PIDFILE`
|
||||
fi
|
||||
|
||||
unset logopt
|
||||
if [ -n "$logfile" ]; then
|
||||
logopt='</dev/null >>$logfile 2>&1'
|
||||
else
|
||||
# when starting without log file, redirect stderr to stdout, so
|
||||
# pg_ctl can be invoked with >$logfile and still have pg_ctl's
|
||||
# stderr on the terminal.
|
||||
logopt='</dev/null 2>&1'
|
||||
fi
|
||||
|
||||
# no -o given
|
||||
|
|
@ -262,49 +313,66 @@ if [ $op = "start" -o $op = "restart" ];then
|
|||
if [ $op = "start" ];then
|
||||
# if we are in start mode, then look for postmaster.opts.default
|
||||
if [ -f $DEFPOSTOPTS ]; then
|
||||
$po_path -D $PGDATA `cat $DEFPOSTOPTS` &
|
||||
else
|
||||
$po_path -D $PGDATA &
|
||||
POSTOPTS=`cat $DEFPOSTOPTS`
|
||||
fi
|
||||
POSTOPTS="-D $PGDATA $POSTOPTS"
|
||||
else
|
||||
# if we are in restart mode, then look postmaster.opts
|
||||
`cat $POSTOPTSFILE` &
|
||||
# if we are in restart mode, then look for postmaster.opts
|
||||
set X `cat $POSTOPTSFILE`
|
||||
shift
|
||||
po_path=$1
|
||||
shift
|
||||
POSTOPTS=$@
|
||||
fi
|
||||
else
|
||||
# -o given
|
||||
$po_path -D $PGDATA $POSTOPTS &
|
||||
else # -o given
|
||||
POSTOPTS="-D $PGDATA $POSTOPTS"
|
||||
fi
|
||||
|
||||
eval '$po_path' '$POSTOPTS' $logopt '&'
|
||||
|
||||
if [ -f $PIDFILE ];then
|
||||
if [ "`head -1 $PIDFILE`" = "$pid" ];then
|
||||
echo "$CMDNAME: Cannot start postmaster. Is another postmaster is running?"
|
||||
if [ "`sed -n 1p $PIDFILE`" = "$pid" ];then
|
||||
echo "$CMDNAME: cannot start postmaster" 1>&2
|
||||
echo "Examine the log output." 1>&2
|
||||
exit 1
|
||||
fi
|
||||
fi
|
||||
|
||||
# wait for postmaster to start up
|
||||
if [ "$wait" = 1 ];then
|
||||
# wait for postmaster to start
|
||||
if [ "$wait" = yes ];then
|
||||
cnt=0
|
||||
$ECHO_N "Waiting for postmaster to start up.."$ECHO_C
|
||||
$silence_echo $ECHO_N "waiting for postmaster to start..."$ECHO_C
|
||||
while :
|
||||
do
|
||||
# FIXME: This is horribly misconceived.
|
||||
# 1) If password authentication is set up, the connection will fail.
|
||||
# 2) If a virtual host is set up, the connection may fail.
|
||||
# 3) If network traffic filters are set up tight enough, the connection
|
||||
# may fail.
|
||||
# 4) When no Unix domain sockets are available, the connection will
|
||||
# fail. (Using TCP/IP by default ain't better.)
|
||||
# 5) When a different port is configured, the connection will fail
|
||||
# or go to the wrong server.
|
||||
# 6) If the dynamic loader is not set up correctly (for this user/at
|
||||
# this time), psql will fail (to find libpq).
|
||||
# 7) If psql is misconfigured, this may fail.
|
||||
if "$PGPATH/psql" -l >/dev/null 2>&1
|
||||
then
|
||||
break;
|
||||
else
|
||||
$ECHO_N "."$ECHO_C
|
||||
$silence_echo $ECHO_N "."$ECHO_C
|
||||
cnt=`expr $cnt + 1`
|
||||
if [ $cnt -gt 60 ];then
|
||||
echo "$CMDNAME: postmaster does not start up"
|
||||
if [ $cnt -gt $wait_seconds ];then
|
||||
$silence_echo echo "failed"
|
||||
echo "$CMDNAME: postmaster does not start" 1>&2
|
||||
exit 1
|
||||
fi
|
||||
sleep 1
|
||||
fi
|
||||
done
|
||||
echo "done"
|
||||
fi
|
||||
|
||||
echo "postmaster successfully started up"
|
||||
$silence_echo echo "done"
|
||||
fi
|
||||
$silence_echo echo "postmaster successfully started"
|
||||
fi # start or restart
|
||||
|
||||
exit 0
|
||||
|
|
|
|||
Loading…
Reference in New Issue