Re: [squid-users] Squid shutdown behaviour

From: Amos Jeffries <squid3_at_treenet.co.nz>
Date: Fri, 18 Mar 2011 15:56:32 +1300

On 18/03/11 04:10, N3O wrote:
> Hello
>
> I'm having a problem trying to shutdown a squid instance. Version 3.1.11
> when i do a service squid stop or /etc/init.d/squid stop it shows:
>
> [root_at_ip-10-170-99-79 subsys]# ps -ef | grep squid
> root 3662 1 0 10:40 ? 00:00:00 squid
> squid 3780 3662 0 10:55 ? 00:00:00 (squid)
> squid 3783 3780 0 10:55 ? 00:00:00 (unlinkd)
> root 3825 2379 0 10:58 pts/0 00:00:00 grep squid
> [root_at_ip-10-170-99-79 subsys]# service squid stop
> Stopping squid: ..................................................
> [root_at_ip-10-170-99-79 subsys]# ps -ef | grep squid
> root 3662 1 0 10:40 ? 00:00:00 squid
> squid 3864 3662 0 10:59 ? 00:00:00 (squid)
> squid 3867 3864 0 10:59 ? 00:00:00 (unlinkd)
> root 3903 2379 0 11:00 pts/0 00:00:00 grep squid
>
> the same happens with /etc/init.d/squid stop
>
> [root_at_ip-10-170-99-79 subsys]# ps -ef | grep squid
> root 3662 1 0 10:40 ? 00:00:00 squid
> squid 3946 3662 0 11:01 ? 00:00:00 (squid)
> squid 3949 3946 0 11:01 ? 00:00:00 (unlinkd)
> root 3985 2379 0 11:04 pts/0 00:00:00 grep squid
> [root_at_ip-10-170-99-79 subsys]# /etc/init.d/squid stop
> Stopping squid: ..................................................
> [root_at_ip-10-170-99-79 subsys]# ps -ef | grep squid
> root 3662 1 0 10:40 ? 00:00:00 squid
> squid 4019 3662 0 11:05 ? 00:00:00 (squid)
> squid 4022 4019 0 11:05 ? 00:00:00 (unlinkd)
> root 4056 2379 0 11:07 pts/0 00:00:00 grep squid
> [root_at_ip-10-170-99-79 subsys]#
>
> It doesnt stop squid, it seems that is just reloading it???
> is this normal???

This behaviour shows up when there is a crash during the shutdown of the
worker process. The master only sees the child ending on a crash and
restarts.

You will need to do some tracking down to find out what the crash is
about. Hopefully it is mentioned in cache.log. Some tricks with testing
on a production machines are detailed at
http://wiki.squid-cache.org/SquidFaq/BugReporting

When you know what it is please check bugzilla, there are a few known
causes of shutdown crashing. If you find its a new one, please add a new
bug entry about it.

Amos

-- 
Please be using
   Current Stable Squid 2.7.STABLE9 or 3.1.11
   Beta testers wanted for 3.2.0.5
Received on Fri Mar 18 2011 - 02:56:36 MDT

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