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help / color / mirror / Atom feedFrom: Tatsuo Ishii <[email protected]>
To: [email protected]
Subject: pgpool: Close listening sockets before forking.
Date: Mon, 09 Mar 2026 09:19:14 +0000
Message-ID: <[email protected]> (raw)
Close listening sockets before forking.
Previously, when pgpool main process forks sub processes (i.e. user
session process, pcp_main process, health check process, streaming
replication check process and life check process), they inherited
pgpool and/or pcp listening sockets. However some of processes do not
need those sockets:
- user session process - pcp sockets are unnecessary
- pcp main process - pgpool sockets are unnecessary
- health check, streaming replication check and life check process -
pgpool and pcp sockets are unnecessary
The remaining listening sockets could be a potential problem when
those process go down. Since they may keep the listening sockets for a
while, it could be possible that it prevents next pgpool starting up
from binding those ports.
Let's close those unnecessary sockets after forking. For this purpose
new function close_listening_sockets() is introduced.
Discussion: https://www.postgresql.org/message-id/20260302.100028.1346768433787074248.ishii%40postgresql.org
Backpatch-through: v4.4
Branch
------
V4_6_STABLE
Details
-------
https://git.postgresql.org/gitweb?p=pgpool2.git;a=commitdiff;h=552c40db73f3e0d65ea038f2ca0780afd1efd...
Modified Files
--------------
src/include/pool.h | 13 ++++++++++++-
src/main/pgpool_main.c | 36 ++++++++++++++++++++++++++++++++++++
src/watchdog/wd_lifecheck.c | 6 +++++-
3 files changed, 53 insertions(+), 2 deletions(-)
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