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Update documentation about SIGKILL of postmaster.
Sat, 8 Jun 2019 17:12:26 +0000 (10:12 -0700)
Sat, 8 Jun 2019 17:12:26 +0000 (10:12 -0700)
Removing shared memory and semaphores in response to server start
failure often masks the real problem, a live process associated with the
data directory; see commit 5a907404b52753c4d6c6a7c21765aeaa42fd6a3b.
Since 9.6, it's rarely necessary to kill subprocesses manually. (When
it is necessary, that commit's HINT will say as much, in all supported
versions.)


diff --git a/doc/src/sgml/runtime.sgml b/doc/src/sgml/runtime.sgml
index e053e2ee34b3923c6551194335707a43efc7e538..18c11a2bed1c64c81d78550ffc64892add2271d8 100644 (file)
--- a/doc/src/sgml/runtime.sgml
+++ b/doc/src/sgml/runtime.sgml
@@ -1685,14 +1685,12 @@ $ <userinput>kill -INT `head -1 /usr/local/pgsql/data/postmaster.pid`</userinput
<important>
<para>
- It is best not to use <systemitem>SIGKILL</systemitem> to shut down
- the server. Doing so will prevent the server from releasing
- shared memory and semaphores, which might then have to be done
- manually before a new server can be started. Furthermore,
- <systemitem>SIGKILL</systemitem> kills the <command>postgres</command>
- process without letting it relay the signal to its subprocesses,
- so it will be necessary to kill the individual subprocesses by hand as
- well.
+ It is best not to use <systemitem>SIGKILL</systemitem> to shut down the
+ server. Doing so will prevent the server from releasing shared memory and
+ semaphores. Furthermore, <systemitem>SIGKILL</systemitem> kills
+ the <command>postgres</command> process without letting it relay the
+ signal to its subprocesses, so it might be necessary to kill the
+ individual subprocesses by hand as well.
</para>
</important>
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