From: | Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us> |
---|---|
To: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
Cc: | Andrew Sullivan <ajs(at)crankycanuck(dot)ca>, pgsql-sql(at)postgresql(dot)org |
Subject: | Re: How to check postgres running or not ? |
Date: | 2004-09-20 12:19:27 |
Message-ID: | 200409201219.i8KCJRp05291@candle.pha.pa.us |
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Lists: | pgsql-sql |
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?
--
Bruce Momjian | http://candle.pha.pa.us
pgman(at)candle(dot)pha(dot)pa(dot)us | (610) 359-1001
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