From: Bruce Momjian <pgman@candle.pha.pa.us>
Message-Id: <200409201219.i8KCJRp05291@candle.pha.pa.us>
Subject: Re: How to check postgres running or not ?
In-Reply-To: <19876.1095613927@sss.pgh.pa.us>
To: Tom Lane <tgl@sss.pgh.pa.us>
Date: Mon, 20 Sep 2004 08:19:27 -0400 (EDT)
Cc: Andrew Sullivan <ajs@crankycanuck.ca>, pgsql-sql@postgresql.org
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Tom Lane wrote:
> At one time there was discussion of writing a "pg_ping" utility program
> to do exactly this, but it still hasn't got done.  You can fake it to
> some extent by just running "psql -l >/dev/null" and checking the exit
> code, but this does require supplying a valid username and possibly a
> password (because psql's exit code doesn't distinguish "could not
> connect" from authentication errors).
> 
> BTW, "pg_ctl status" doesn't answer this need because it only looks for
> a postmaster.pid file, it doesn't attempt to verify that the postmaster
> is really alive.

Is improving this a TODO item for pg_ctl?

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