supervision - discussion about system services, daemon supervision, init, runlevel management, and tools such as s6 and runit
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From: Jonathan de Boyne Pollard <J.deBoynePollard-newsgroups@NTLWorld.COM>
To: supervision@list.skarnet.org
Subject: Re: runit don't restart service.
Date: Wed, 25 Jul 2018 09:35:46 +0100	[thread overview]
Message-ID: <487edab4-cee2-d3f6-08bc-b2535ca891f7@NTLWorld.COM> (raw)
In-Reply-To: <CAL_XjKV6FDzg4-fv8K2c0pgSKFbo0zhA9DJ_gKQ4aHE_vSymKQ@mail.gmail.com>

Yoshinori Sato:

> root 10647 10592 0 7月13 ? 00:00:00 /opt/LifeKeeper/sbin/runsv lkcheck
>
> terminate service
> [root@nodeA ec2-user]# kill 10647 12521
>
That is not terminating a service.  That is terminating the service 
supervision subsystem.  If you kill the process that actually does the 
restarting, you really should not expect that process to then restart 
anything.  The behaviour of runsv in response to SIGTERM is documented 
in its manual; as are the ways to properly tell it to terminate a 
service, as opposed to what you did here.

Use the runit manual in preference to the LifeKeeper manual here, too.  
In particular learn the use of runit commands like

     # /opt/LifeKeeper/sbin/sv status /opt/LifeKeeper/etc/service/*

rather than the clumsy and error-prone grepping of the process list that 
is given in the LifeKeeper manual.



  reply	other threads:[~2018-07-25  8:35 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-07-25  6:29 Yoshinori Sato
2018-07-25  8:35 ` Jonathan de Boyne Pollard [this message]
2018-07-25  8:53   ` Yoshinori Sato

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