[pgpool-general: 4837] Re: failover_command and follow_command does not exit and hangs indefinitely

[Tatsuo Ishii]

> I'm trying to configure expandable cluster using Ubuntu 14.04 LTS,
> PostgreSQL 9.5 and PgPool 3.5.3.
> I'm having a problem with failover/follow commands: any command, be that
> ansible-playbook, ssh or anything else does not exit after successful
> run and hangs indefinitely, reacting only to "kill -9".  Which, in case
> of failover script, makes pgpool running that command wait for it's exit
> and also to hang.
> My current workaround is forking script, running a command in the new
> fork, and terminate it after successful execution. Obviously, its not a
> viable production solution.
> Please help me undestand, why is this happening?

I guess your fail over script is waiting for stdin/stdout/stderr
closed?

Best regards,
--
Tatsuo Ishii
SRA OSS, Inc. Japan
English: http://www.sraoss.co.jp/index_en.php
Japanese:http://www.sraoss.co.jp