Log PostgreSQL version number on startup

Logging the PostgreSQL version on startup is useful for two reasons:
There is a clear marker in the log file that a new postmaster is
beginning, and it's useful for tracking the server version across
startup while upgrading.

Author: Christoph Berg <christoph.berg@credativ.de>
Discussion: https://www.postgresql.org/message-id/flat/20181121144611.GJ15795@msg.credativ.de/

diff --git a/src/backend/postmaster/postmaster.c b/src/backend/postmaster/postmaster.c
index 119c01d7452f731c6ebc0accce342efe5ce6c05b..40a0222220d091c2554a35e1d9efb34b20236e9d 100644 (file)
--- a/src/backend/postmaster/postmaster.c
+++ b/src/backend/postmaster/postmaster.c
@@ -1052,6 +1052,10 @@ PostmasterMain(int argc, char *argv[])
 
        whereToSendOutput = DestNone;
 
+       /* Report server startup in log */
+       ereport(LOG,
+                       (errmsg("starting %s", PG_VERSION_STR)));
+
        /*
         * Establish input sockets.
         *