[pgpool-general: 6878] Re: PGPOOL-failover

Bo Peng pengbo at sraoss.co.jp
Thu Feb 13 14:45:40 JST 2020 

Hi,

Could you share your pgpool.conf and the OS version.

On Wed, 12 Feb 2020 22:30:53 +0200
Loai Abdallatif <loai.abdallatif at gmail.com> wrote:

> also from postgres promt:i see only server1 up as below
> 
> -bash-4.2$ psql -h server1 -p 9999 -U pgpool postgres -c "show pool_nodes"
>  node_id |   hostname   | port | status | lb_weight |  role   | select_cnt
> | load_balance_node | replication_delay | replication_state |
> replication_sync_state | last_s
> tatus_change
> ---------+--------------+------+--------+-----------+---------+------------+-------------------+-------------------+-------------------+------------------------+-------
> --------------
>  0       | 192.168.1.91 | 5432 | up     | 0.333333  | primary | 0
>  | true              | 0                 |                   |
>            | 2020-0
> 2-12 22:29:54
>  1       | 192.168.1.92 | 5432 | down   | 0.333333  | standby | 0
>  | false             | 0                 |                   |
>            | 2020-0
> 2-12 22:28:54
>  2       | 192.168.1.95 | 5432 | down   | 0.333333  | standby | 0
>  | false             | 0                 |                   |
>            | 2020-0
> 2-12 22:28:54
> (3 rows)
> 
> On Wed, Feb 12, 2020 at 10:27 PM Loai Abdallatif <loai.abdallatif at gmail.com>
> wrote:
> 
> > Hello Peng, all
> >
> > I have followed the setup for pgpool on CentOS 7 as per this link
> > https://www.pgpool.net/docs/latest/en/html/example-cluster.html.
> >
> > [image: image.png]
> >
> > unfortunately i got virtual ip not assigned as per below image and i see
> > pgpool logs in server1 ( master ) as below , and suddenly the interface
> > ba1> disappear
> >
> >
> >
> > Feb 12 22:26:12 server1 pgpool[1136]: [471-1] 2020-02-12 22:26:12: pid
> > 1136: LOG:  get_query_result falied: status: -1
> > Feb 12 22:26:12 server1 pgpool[1136]: [471-2] 2020-02-12 22:26:12: pid
> > 1136: CONTEXT:  while checking replication time lag
> > Feb 12 22:26:12 server1 pgpool[1136]: [472-1] 2020-02-12 22:26:12: pid
> > 1136: DEBUG:  do_query: extended:0 query:"SELECT pg_is_in_recovery()"
> > Feb 12 22:26:12 server1 pgpool[1136]: [473-1] 2020-02-12 22:26:12: pid
> > 1136: DEBUG:  verify_backend_node_status: there's no standby node
> > Feb 12 22:26:12 server1 pgpool[1136]: [474-1] 2020-02-12 22:26:12: pid
> > 1136: DEBUG:  node status[0]: 1
> > Feb 12 22:26:12 server1 pgpool[1136]: [475-1] 2020-02-12 22:26:12: pid
> > 1136: DEBUG:  node status[1]: 0
> > Feb 12 22:26:12 server1 pgpool[1136]: [476-1] 2020-02-12 22:26:12: pid
> > 1136: DEBUG:  node status[2]: 0
> > Feb 12 22:26:12 server1 pgpool[1131]: [203-1] 2020-02-12 22:26:12: pid
> > 1131: DEBUG:  watchdog heartbeat: send heartbeat signal to server2:9694
> > Feb 12 22:26:12 server1 pgpool[1133]: [203-1] 2020-02-12 22:26:12: pid
> > 1133: DEBUG:  watchdog heartbeat: send heartbeat signal to server3:9694
> > Feb 12 22:26:13 server1 pgpool[1132]: [203-1] 2020-02-12 22:26:13: pid
> > 1132: DEBUG:  received heartbeat signal from "192.168.1.92(server2):9999"
> > node:server2:9999 Linux server2.post.ps
> >
> >
> > Feb 12 22:26:14 server1 pgpool[1131]: [204-1] 2020-02-12 22:26:14: pid
> > 1131: DEBUG:  watchdog heartbeat: send heartbeat signal to server2:9694
> > Feb 12 22:26:14 server1 pgpool[1133]: [204-1] 2020-02-12 22:26:14: pid
> > 1133: DEBUG:  watchdog heartbeat: send heartbeat signal to server3:9694
> > Feb 12 22:26:15 server1 pgpool[1132]: [204-1] 2020-02-12 22:26:15: pid
> > 1132: DEBUG:  received heartbeat signal from "192.168.1.92(server2):9999"
> > node:server2:9999 Linux server2.post.ps
> > Feb 12 22:26:16 server1 pgpool[1131]: [205-1] 2020-02-12 22:26:16: pid
> > 1131: DEBUG:  watchdog heartbeat: send heartbeat signal to server2:9694
> > Feb 12 22:26:16 server1 pgpool[1133]: [205-1] 2020-02-12 22:26:16: pid
> > 1133: DEBUG:  watchdog heartbeat: send heartbeat signal to server3:9694
> > Feb 12 22:26:17 server1 pgpool[1090]: [767-1] 2020-02-12 22:26:17: pid
> > 1090: DEBUG:  STATE MACHINE INVOKED WITH EVENT = TIMEOUT Current State =
> > MASTER
> > Feb 12 22:26:17 server1 pgpool[1090]: [768-1] 2020-02-12 22:26:17: pid
> > 1090: DEBUG:  sending packet, watchdog node:[server2:9999 Linux
> > server2.post.ps] command id:[50] type:[IAM COORDINATOR] state:[MASTER]
> > Feb 12 22:26:17 server1 pgpool[1090]: [769-1] 2020-02-12 22:26:17: pid
> > 1090: DEBUG:  sending watchdog packet to socket:9, type:[M], command ID:50,
> > data Length:118
> > Feb 12 22:26:17 server1 pgpool[1090]: [770-1] 2020-02-12 22:26:17: pid
> > 1090: DEBUG:  received watchdog packet type:I
> > Feb 12 22:26:17 server1 pgpool[1090]: [771-1] 2020-02-12 22:26:17: pid
> > 1090: DEBUG:  reading packet type I of length 330
> > Feb 12 22:26:17 server1 pgpool[1090]: [772-1] 2020-02-12 22:26:17: pid
> > 1090: DEBUG:  STATE MACHINE INVOKED WITH EVENT = PACKET RECEIVED Current
> > State = MASTER
> > Feb 12 22:26:17 server1 pgpool[1090]: [773-1] 2020-02-12 22:26:17: pid
> > 1090: DEBUG:  received packet, watchdog node:[server2:9999 Linux
> > server2.post.ps] command id:[50] type:[NODE INFO] state:[MASTER]
> > Feb 12 22:26:17 server1 pgpool[1090]: [774-1] 2020-02-12 22:26:17: pid
> > 1090: DEBUG:  packet I with command ID 50 is reply to the command M
> > Feb 12 22:26:17 server1 pgpool[1090]: [775-1] 2020-02-12 22:26:17: pid
> > 1090: DEBUG:  Watchdog node "server2:9999 Linux server2.post.ps" has
> > replied for command id 50
> > Feb 12 22:26:17 server1 pgpool[1090]: [776-1] 2020-02-12 22:26:17: pid
> > 1090: DEBUG:  command I with command id 50 is finished with
> > COMMAND_FINISHED_ALL_REPLIED
> > Feb 12 22:26:17 server1 pgpool[1090]: [777-1] 2020-02-12 22:26:17: pid
> > 1090: DEBUG:  STATE MACHINE INVOKED WITH EVENT = COMMAND FINISHED Current
> > State = MASTER
> > Feb 12 22:26:17 server1 pgpool[1090]: [778-1] 2020-02-12 22:26:17: pid
> > 1090: DEBUG:  I am the cluster leader node command finished with
> > status:[ALL NODES REPLIED]
> > Feb 12 22:26:17 server1 pgpool[1090]: [778-2] 2020-02-12 22:26:17: pid
> > 1090: DETAIL:  The command was sent to 1 nodes and 1 nodes replied to it
> > Feb 12 22:26:17 server1 pgpool[1137]: [469-1] 2020-02-12 22:26:17: pid
> > 1137: DEBUG:  health check: clearing alarm
> > Feb 12 22:26:17 server1 pgpool[1137]: [470-1] 2020-02-12 22:26:17: pid
> > 1137: DEBUG:  authenticate kind = 0
> > Feb 12 22:26:17 server1 pgpool[1137]: [471-1] 2020-02-12 22:26:17: pid
> > 1137: DEBUG:  authenticate backend: key data received
> > Feb 12 22:26:17 server1 pgpool[1137]: [472-1] 2020-02-12 22:26:17: pid
> > 1137: DEBUG:  authenticate backend: transaction state: I
> > Feb 12 22:26:17 server1 pgpool[1137]: [473-1] 2020-02-12 22:26:17: pid
> > 1137: DEBUG:  health check: clearing alarm
> > Feb 12 22:26:17 server1 pgpool[1137]: [474-1] 2020-02-12 22:26:17: pid
> > 1137: DEBUG:  health check: clearing alarm
> > Feb 12 22:26:17 server1 pgpool[1132]: [205-1] 2020-02-12 22:26:17: pid
> > 1132: DEBUG:  received heartbeat signal from "192.168.1.92(server2):9999"
> > node:server2:9999 Linux server2.post.ps
> >
> > On Mon, Feb 10, 2020 at 10:10 AM Bo Peng <pengbo at sraoss.co.jp> wrote:
> >
> >> On Thu, 6 Feb 2020 12:39:48 +0200
> >> Loai Abdallatif <loai.abdallatif at gmail.com> wrote:
> >>
> >> > Dear Colleagues
> >> >
> >> > any one have a document for setup Pgpool-II's failover functionality (
> >> > active-standby ) on Debian ?
> >>
> >>
> >> Below is a setup example on CentOS7.
> >> https://www.pgpool.net/docs/latest/en/html/example-cluster.html
> >>
> >> > thanks
> >>
> >>
> >> --
> >> Bo Peng <pengbo at sraoss.co.jp>
> >> SRA OSS, Inc. Japan
> >>
> >


-- 
Bo Peng <pengbo at sraoss.co.jp>
SRA OSS, Inc. Japan

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