[pgpool-general: 4838] Re: failover_command and follow_command does not exit and hangs indefinitely

[Tatsuo Ishii]

> On 02.08.2016 4:26, Tatsuo Ishii wrote:
>>> 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?
> 
> I dont exactly know, that's why i'm asking. Right now i'm having a
> problem with ansible-playbook and ssh.

Without seeing the fail over script, I can't tell. Can you share the
fail over script you created?

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