Re: [squid-users] squid stopped responding if internet link is congested

On Tue, 2006-01-24 at 18:24 +0100, lokesh.khanna@accelonafrica.com
wrote:
> Hi
>
> I am using REDHAT ES 3.0 and running squid 2.5.10 stable on it.
> I have 2 internet Links. One Link is fibre ( Primary) and other is
> Satellite link(Failover).
> Failover link capacity is not much and if Primary goes down, all traffic
> get shifted to Failover link. And Failover link get congested.
>
> I noticed when my Primary link goes down, traffic get shifted to
> Congested link. Squid open URL slowly, This make sense because link is
> congested.
> But I also noticed when my primary link comes back up, traffic get
> shifted to primary link automatically and squid daemon stopped
> responding.

This is strange. Squid doesn't define where traffic gets routed to, it's
a task for the operating system... in such occurrences, can you
determine what squid is doing (for instance by attaching to the process
via "strace -p <pid>")?

> I couldn't even shutdown squid daemon manually. I can ping to internet
> from squid server but I can not browse through squid. I have to restart
> server to start squid again. What can be the reason of this? Where
> should I look into to resolve this problem.

Have you tried kill? kill -9? If neither works it means that the OS has
put squid in an unstoppable state, which is pretty weird and usually
only happens in case of NFS timeouts...

        Kinkie
Received on Tue Jan 24 2006 - 11:32:45 MST