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Improve "pg_ctl -w start" server detection by writing the postmaster

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port and socket directory into postmaster.pid, and have pg_ctl read from
that file, for use by PQping().
This commit is contained in:
Bruce Momjian
2010-12-24 09:45:15 -05:00
parent 4b1742a192
commit 075354ad1b
3 changed files with 118 additions and 164 deletions
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51
doc/src/sgml/ref/pg_ctl-ref.sgml
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@@ -348,21 +348,12 @@ PostgreSQL documentation
<para>
Wait for the startup or shutdown to complete.
Waiting is the default option for shutdowns, but not startups.
When waiting for startup, <command>pg_ctl</command> repeatedly
attempts to connect to the server.
When waiting for shutdown, <command>pg_ctl</command> waits for
the server to remove its <acronym>PID</acronym> file.
When waiting for startup, <command>pg_ctl</command> repeatedly
attempts to connect to the server via <application>psql</>, and
reports success when this is successful.
<command>pg_ctl</command> will attempt to use the proper port for
<application>psql</>. If the environment variable
<envar>PGPORT</envar> exists, that is used. Otherwise,
<command>pg_ctl</command> will see if a port has been set in the
<filename>postgresql.conf</filename> file. If not, it will use the
default port that <productname>PostgreSQL</productname> was compiled
with (5432 by default).
When waiting, <command>pg_ctl</command> will
return an exit code based on the success of the startup
or shutdown.
<command>pg_ctl</command> returns an exit code based on the
success of the startup or shutdown.
</para>
</listitem>
</varlistentry>
@@ -442,28 +433,6 @@ PostgreSQL documentation
</listitem>
</varlistentry>
<varlistentry>
<term><envar>PGHOST</envar></term>
<listitem>
<para>
Default host name or Unix-domain socket location for <xref
linkend="app-psql"> (used when waiting for startup).
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><envar>PGPORT</envar></term>
<listitem>
<para>
Default port number for <xref linkend="app-psql">
(used when waiting for startup).
</para>
</listitem>
</varlistentry>
</variablelist>
<para>
@@ -506,18 +475,6 @@ PostgreSQL documentation
</listitem>
</varlistentry>
<varlistentry>
<term><filename>postgresql.conf</filename></term>
<listitem>
<para>
This file, located in the data directory, is parsed to find the
proper port to use with <application>psql</application>
when waiting for startup.
</para>
</listitem>
</varlistentry>
</variablelist>
</refsect1>