[pgpool-general: 8863] Re: Fwd: pgpool is not accepting connections
Bo Peng
pengbo at sraoss.co.jp
Tue Jul 4 18:05:29 JST 2023
Hi,
When you restart Pgpool-II, will pgpool not be able to detect this primary?
On Mon, 3 Jul 2023 16:55:50 +0800
Zhaoxun Yan <yan.zhaoxun at gmail.com> wrote:
> Hi Peng!
> As in the configuration:
> backend_hostname0 = '172.17.0.2'
> 172.17.0.2 is primary by default, or does pgpool think otherwise? How can I
> check?
>
>
> On Mon, Jul 3, 2023 at 4:29 PM Bo Peng <pengbo at sraoss.co.jp> wrote:
>
> > Hi,
> >
> > > I have tested local postgresql, and it is ok for psql works:
> > > psql -h 127.0.0.1 -U checker -c '\l' template1
> > > But as I add in `-p 9999` the pgpool is down:
> > > psql -h 127.0.0.1 -p 9999 -U checker -c '\l' template1
> > > And I have found the latest log with these lines repeating:
> >
> > You need to make sure PostgreSQL primary is running before pgpool starts.
> > If pgpool can't find any running PostgreSQL primary within
> > "search_primary_node_timeout",
> > Pgpool believes all backend nodes are down and will not accepting any new
> > connections.
> >
> > On Thu, 29 Jun 2023 15:04:17 +0800
> > Zhaoxun Yan <yan.zhaoxun at gmail.com> wrote:
> >
> > > I have also tested connecting postgres directly via ip address registered
> > > as first backend in pgpool.conf
> > > backend_hostname0 = '172.17.0.2'
> > >
> > > And it works:
> > > # psql -h 172.17.0.2 -p 5432 -U checker -c '\l' template1
> > > Password for user checker:
> > > List of databases
> > > Name | Owner | Encoding | Collate | Ctype | Access
> > > privileges
> > >
> > -----------+----------+----------+-------------+-------------+-----------------------
> > > postgres | postgres | UTF8 | en_US.UTF-8 | en_US.UTF-8 |
> > > template0 | postgres | UTF8 | en_US.UTF-8 | en_US.UTF-8 |
> > =c/postgres
> > > +
> > > | | | | |
> > > postgres=CTc/postgres
> > > template1 | postgres | UTF8 | en_US.UTF-8 | en_US.UTF-8 |
> > =c/postgres
> > > +
> > > | | | | |
> > > postgres=CTc/postgres+
> > > | | | | |
> > > checker=CTc/postgres
> > > (3 rows)
> > >
> > > while pgpool getsdozens of subprocess waiting for connection, it still
> > > believes that all nodes are down:
> > >
> > > # ps aux|grep pgpool|grep -v grep
> > > root 100949 0.0 17.5 149080 137180 ? Ss Jun28 0:00 pgpool
> > > root 100950 0.0 0.3 15308 2932 ? S Jun28 0:00
> > pgpool:
> > > PgpoolLogger
> > > root 100953 0.0 0.3 149080 2784 ? S Jun28 0:00
> > pgpool:
> > > wait for connection request
> > > root 100955 0.0 0.3 149080 2784 ? S Jun28 0:00
> > pgpool:
> > > wait for connection request
> > > root 100956 0.0 0.3 149080 2784 ? S Jun28 0:00
> > pgpool:
> > > wait for connection request
> > > root 100958 0.0 0.3 149080 2784 ? S Jun28 0:00
> > pgpool:
> > > wait for connection request
> > > root 100959 0.0 0.3 149080 2784 ? S Jun28 0:00
> > pgpool:
> > > wait for connection request
> > > root 100960 0.0 0.3 149080 2784 ? S Jun28 0:00
> > pgpool:
> > > wait for connection request
> > > root 100961 0.0 0.3 149080 2784 ? S Jun28 0:00
> > pgpool:
> > > wait for connection request
> > > root 100962 0.0 0.3 149080 2784 ? S Jun28 0:00
> > pgpool:
> > > wait for connection request
> > > root 100963 0.0 0.3 149080 2784 ? S Jun28 0:00
> > pgpool:
> > > wait for connection request
> > > root 100964 0.0 0.3 149080 2784 ? S Jun28 0:00
> > pgpool:
> > > wait for connection request
> > > root 100966 0.0 0.3 149080 2784 ? S Jun28 0:00
> > pgpool:
> > > wait for connection request
> > > root 100967 0.0 0.3 149080 2784 ? S Jun28 0:00
> > pgpool:
> > > wait for connection request
> > > root 100969 0.0 0.3 149080 2784 ? S Jun28 0:00
> > pgpool:
> > > wait for connection request
> > > root 100970 0.0 0.3 149080 2784 ? S Jun28 0:00
> > pgpool:
> > > wait for connection request
> > > root 100971 0.0 0.3 149080 2788 ? S Jun28 0:00
> > pgpool:
> > > wait for connection request
> > > root 100972 0.0 0.3 149080 2788 ? S Jun28 0:00
> > pgpool:
> > > wait for connection request
> > > root 100973 0.0 0.3 149080 2788 ? S Jun28 0:00
> > pgpool:
> > > wait for connection request
> > > root 100974 0.0 0.3 149080 2788 ? S Jun28 0:00
> > pgpool:
> > > wait for connection request
> > > root 100975 0.0 0.3 149080 2788 ? S Jun28 0:00
> > pgpool:
> > > wait for connection request
> > > root 100977 0.0 0.3 149080 2788 ? S Jun28 0:00
> > pgpool:
> > > wait for connection request
> > > root 100978 0.0 0.3 149080 2788 ? S Jun28 0:00
> > pgpool:
> > > wait for connection request
> > > root 100981 0.0 0.3 149080 2788 ? S Jun28 0:00
> > pgpool:
> > > wait for connection request
> > > root 100982 0.0 0.3 149080 2788 ? S Jun28 0:00
> > pgpool:
> > > wait for connection request
> > > root 100983 0.0 0.3 149080 2788 ? S Jun28 0:00
> > pgpool:
> > > wait for connection request
> > > root 101010 0.0 0.1 149084 1352 ? S Jun28 0:00
> > pgpool:
> > > PCP: wait for connection request
> > > root 101011 0.0 0.1 149080 1352 ? S Jun28 0:00
> > pgpool:
> > > worker process
> > >
> > > ---------- Forwarded message ---------
> > > From: Zhaoxun Yan <yan.zhaoxun at gmail.com>
> > > Date: Wed, Jun 28, 2023 at 4:47 PM
> > > Subject: pgpool is not accepting connections
> > > To: <pgpool-general at pgpool.net>
> > >
> > >
> > > Hi guys!
> > >
> > > I have tested local postgresql, and it is ok for psql works:
> > > psql -h 127.0.0.1 -U checker -c '\l' template1
> > > But as I add in `-p 9999` the pgpool is down:
> > > psql -h 127.0.0.1 -p 9999 -U checker -c '\l' template1
> > > And I have found the latest log with these lines repeating:
> > >
> > > 2023-06-28 16:36:22.928: child pid 100980: FATAL: pgpool is not
> > accepting
> > > any new connections
> > > 2023-06-28 16:36:22.928: child pid 100980: DETAIL: all backend nodes are
> > > down, pgpool requires at least one valid node
> > > 2023-06-28 16:36:22.928: child pid 100980: HINT: repair the backend
> > nodes
> > > and restart pgpool
> > > 2023-06-28 16:36:22.928: main pid 100949: LOG: reaper handler
> > > 2023-06-28 16:36:22.929: main pid 100949: LOG: child process with pid:
> > > 100980 exited with success and will not be restarted
> > > 2023-06-28 16:36:22.929: main pid 100949: LOG: reaper handler: exiting
> > > normally
> > > 2023-06-28 16:36:28.899: child pid 100976: FATAL: pgpool is not
> > accepting
> > > any new connections
> > >
> > > Attached is the current pgpool configuration.
> >
> >
> > --
> > Bo Peng <pengbo at sraoss.co.jp>
> > SRA OSS LLC
> > TEL: 03-5979-2701 FAX: 03-5979-2702
> > URL: https://www.sraoss.co.jp/
> >
--
Bo Peng <pengbo at sraoss.co.jp>
SRA OSS LLC
TEL: 03-5979-2701 FAX: 03-5979-2702
URL: https://www.sraoss.co.jp/
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