Re: PGPool II does not recognize backend_server0

From: Greg Sabino Mullane <htamfids(at)gmail(dot)com>
To: Pablo Calientos <mputzu(at)gmail(dot)com>
Cc: pgsql-general(at)postgresql(dot)org
Subject: Re: PGPool II does not recognize backend_server0
Date: 2025-06-25 14:54:14
Message-ID: CAKAnmmKnQiWk6FciCJzhKtquHwFYt4bvTeZeLQEUwHTD2L5BXQ@mail.gmail.com
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Basic debugging:

Try looking at each node more closely with pcp_node_info

https://www.pgpool.net/docs/latest/en/html/pcp-node-info.html

Also make sure you are always using health_check

https://www.pgpool.net/docs/latest/en/html/runtime-config-health-check.html

Specific debugging:

2025-06-19 16:44:31.934: main pid 6248: LOG: reading status file: 1 th
> backend is set to up status

This would seem to indicate it's reading cached info about the state of the
node, so you may need to remove the pgpool_status file. You can also tell
pgpool to ignore it on startup via the -D or --discard-status flag.

Hope that helps,
Greg

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Crunchy Data - https://www.crunchydata.com
Enterprise Postgres Software Products & Tech Support

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