GNU bug report logs - #45588
[PATCH] services: postgresql: Log from pg_ctl.

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From: Christopher Baines <mail <at> cbaines.net>
To: 45588 <at> debbugs.gnu.org
Subject: [bug#45588] [PATCH] services: postgresql: Log from pg_ctl.
Date: Fri,  1 Jan 2021 10:10:15 +0000

pg_ctl will output errors when starting PostgreSQL, for example about errors
in the configuration file. Without getting pg_ctl to log to a file, I'm not
sure how to find those errors.

* gnu/services/databases.scm (postgresql-activation): Create
/var/log/postgresql.
(postgresql-shepherd-service): Pass --log=/var/log/postgresql/pg_ctl to
pg_ctl.
---
 gnu/services/databases.scm | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/gnu/services/databases.scm b/gnu/services/databases.scm
index d2dc5f0da8..479a3c56f7 100644
--- a/gnu/services/databases.scm
+++ b/gnu/services/databases.scm
@@ -205,6 +205,10 @@ host	all	all	::1/128 	md5"))
            (mkdir-p #$data-directory)
            (chown #$data-directory (passwd:uid user) (passwd:gid user))
 
+           ;; Create log directory
+           (mkdir-p "/var/log/postgresql")
+           (chown "/var/log/postgresql" (passwd:uid user) (passwd:gid user))
+
            ;; Drop privileges and init state directory in a new
            ;; process.  Wait for it to finish before proceeding.
            (match (primitive-fork)
@@ -247,6 +251,7 @@ host	all	all	::1/128 	md5"))
                        (setgid (passwd:gid user))
                        (setuid (passwd:uid user))
                        (execl pg_ctl pg_ctl "-D" #$data-directory "-o" options
+                              "--log=/var/log/postgresql/pg_ctl"
                               mode)))))))
             (pid-file (in-vicinity data-directory "postmaster.pid"))
             (action (lambda args
-- 
2.29.2

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