postgres operational
Hi List,
Is there a sure fire way to tell if postgres server is up an operational. I was testing to see if the
socket at /tmp/.s.PGSQL.5432 existed - but I ran into a recent problem on CentOS 7.5, postgresql 9.2.24, where the
socket was there but my script couldn't read from my database yet.
Thanks,
Steve
--
The best way I came up with for older versions is: If timeout -s 9 10 psql -d DBNAME -c "select 1" >/dev/null ; then ....
And on newer versions, use the pg_isready command.
Scot Kreienkamp |Senior Systems Engineer | La-Z-Boy Corporate
One La-Z-Boy Drive| Monroe, Michigan 48162 | Office: 734-384-6403 | | Mobile: 7349151444 | Email: Scot.Kreienkamp@la-z-boy.com
-----Original Message-----
From: Steve Clark [mailto:steve.clark@netwolves.com]
Sent: Wednesday, January 9, 2019 12:59 PM
To: pgsql <pgsql-general@postgresql.org>
Subject: postgres operationalHi List,
Is there a sure fire way to tell if postgres server is up an operational. I was
testing to see if the
socket at /tmp/.s.PGSQL.5432 existed - but I ran into a recent problem on
CentOS 7.5, postgresql 9.2.24, where the
socket was there but my script couldn't read from my database yet.Thanks,
Steve
--
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El 9/1/19 a las 14:58, Steve Clark escribió:
Hi List,
Is there a sure fire way to tell if postgres server is up an operational. I was testing to see if the
socket at /tmp/.s.PGSQL.5432 existed - but I ran into a recent problem on CentOS 7.5, postgresql 9.2.24, where the
socket was there but my script couldn't read from my database yet.
Use `check_postgres`
--
Martín Marqués http://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Training & Services
On 1/9/19 12:19 PM, Martín Marqués wrote:
El 9/1/19 a las 14:58, Steve Clark escribió:
Hi List,
Is there a sure fire way to tell if postgres server is up an operational. I was testing to see if the
socket at /tmp/.s.PGSQL.5432 existed - but I ran into a recent problem on CentOS 7.5, postgresql 9.2.24, where the
socket was there but my script couldn't read from my database yet.Use `check_postgres`
Isn't "pg_ctl status" the canonical method?
--
Angular momentum makes the world go 'round.
El 9/1/19 a las 17:38, Ron escribió:
On 1/9/19 12:19 PM, Martín Marqués wrote:
El 9/1/19 a las 14:58, Steve Clark escribió:
Hi List,
Is there a sure fire way to tell if postgres server is up an
operational. I was testing to see if the
socket at /tmp/.s.PGSQL.5432 existed - but I ran into a recent
problem on CentOS 7.5, postgresql 9.2.24, where the
socket was there but my script couldn't read from my database yet.Use `check_postgres`
Isn't "pg_ctl status" the canonical method?
Depends on what you are expecting.
`check_postgres` has many different checks, one which will actually try
to connect and run `SELECT 1` to make sure postgres can actually run a
query.
pg_ctl status might return ok, yet you can't connect for other reasons.
--
Martín Marqués http://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Training & Services