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Fix syslog bug: if any messages are emitted to write_syslog before

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the facility has been set, the facility gets set to LOCAL0 and cannot
be changed later.  This seems reasonably plausible to happen, particularly
at higher debug log levels, though I am not certain it explains Han Holl's
recent report.  Easiest fix is to teach the code how to change the value
on-the-fly, which is nicer anyway.  I made the settings PGC_SIGHUP to
conform with log_destination.
This commit is contained in:
Tom Lane
2005-10-14 20:53:56 +00:00
parent f620098dc8
commit abd3f43b4c
4 changed files with 110 additions and 73 deletions
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12
doc/src/sgml/config.sgml
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@ -1,5 +1,5 @@
<!--
$PostgreSQL: pgsql/doc/src/sgml/config.sgml,v 1.28 2005/10/13 22:55:19 momjian Exp $
$PostgreSQL: pgsql/doc/src/sgml/config.sgml,v 1.29 2005/10/14 20:53:55 tgl Exp $
-->
<chapter Id="runtime-config">
<title>Run-time Configuration</title>
@ -2254,7 +2254,8 @@ SELECT * FROM parent WHERE key = 2400;
the default is <literal>LOCAL0</>. See also the
documentation of your system's
<application>syslog</application> daemon.
This option can only be set at server start.
This option can only be set at server start or in the
<filename>postgresql.conf</filename> configuration file.
</para>
</listitem>
</varlistentry>
@ -2271,7 +2272,8 @@ SELECT * FROM parent WHERE key = 2400;
<productname>PostgreSQL</productname> messages in
<application>syslog</application> logs. The default is
<literal>postgres</literal>.
This option can only be set at server start.
This option can only be set at server start or in the
<filename>postgresql.conf</filename> configuration file.
</para>
</listitem>
</varlistentry>
@ -2581,8 +2583,8 @@ SELECT * FROM parent WHERE key = 2400;
<varname>log_statement</> to be logged. When using this option,
if you are not using <application>syslog</>, it is recommended
that you log the PID or session ID using <varname>log_line_prefix</>
so that you can link the statement to the
duration using the process ID or session ID. The default is
so that you can link the statement message to the later
duration message using the process ID or session ID. The default is
<literal>off</>. Only superusers can change this setting.
</para>
</listitem>