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From: | Support Team |
Subject: | Why does “failed protocol test [PGSQL]” happen when system is under load, or how to troubleshoot? |
Date: | Tue, 9 Apr 2019 17:23:35 -0400 |
The error from Monit:
[EDT Apr 9 12:40:45] error : 'pgbouncer' failed protocol test [PGSQL] at [127.0.0.1]:6432 [TCP/IP] -- PGSQL: error receiving data -- Resource temporarily unavailable
This happened while the system was under higher-than-normal load (nginx was handling about 330 requests/second vs. 90).
My question, what would cause this, how do I troubleshoot it, and what might fix this?
Monit has done this before on this machine with other processes.
Here is the config:
check process pgbouncer with pidfile /var/run/postgresql/pgbouncer.pid
start program = "/etc/init.d/pgbouncer start"
stop program = "/etc/init.d/pgbouncer stop"
if failed host 127.0.0.1 port 6432 protocol pgsql then restart
Thank you!
I appreciate & respect your time. I am very keen to solve this, whatever is necessary.
"Coming together is a beginning; keeping together is progress; working together is success."
Henry Ford
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