> Alan Hodgson <ahodgson@xxxxxxxxx> writes: > > On Wednesday, May 30, 2012 08:22:58 PM Bart Lateur wrote: > >> Luckily this is a development machine, but as we don't know what > >> causes the problem we fear we might one day face the exact same > >> problem where it does matter: on a production machine. So we'd like > >> to know exactly what went wrong.. > > > Change selinux to permissive instead of enforcing and see if > > PostgreSQL then runs. If it does, you can look at the selinux logging > > to see what would have been denied in enforcing mode, and hopefully fix it from there. > > Yeah, I concur that this smells like a selinux issue. Most likely, the software update you did messed up the selinux "context" settings for some files. restorecon should be able to fix it for you, if so. > As Alan says, the kernel log (or separate avc log, depending on how your system is set up) should show evidence of the problem if this is where it is. I thought the same, and I was happy to go in and fix it, but then I found that SElinux was not even enabled. Hunting around for more logs I finally found a recently updated log file in the subdirectory /var/lib/pgsql/data/pg_log/. And there I found the message that pg_hba.conf could not be loaded due to a syntax error in it. Weird, it was running before...? It's suboptimal that starting Postgres fails silently. It's also less than optimal that the location of the log files is a bit of a secret. It's also suboptimal that Postgres refuses to run because it doesn't understand 1 line in pg_hba.conf. After all, it's just a data grid, not prose... Anyway, hint for Postgres newbies (or at least, people who don't spend whole days administering Postgres, which is about everybody, I guess): find the logs. They're in the subdirectory pg_log and they have names like "postgresql-DDD.log" where DDD is the three letter name of the day. The currently active log is one of them. Thanks a lot, all of you who replied. -- Bart Lateur. -- Sent via pgsql-general mailing list (pgsql-general@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general