Re: [squid-users] Squid terminates when my network goes down

 On Tue, 12 Jul 2011 13:31:54 +0200, Peter Olsson wrote:
> On Tue, Jul 12, 2011 at 11:05:45AM +0000, Jenny Lee wrote:
>>
>> > > How can you expect *machineS* to get a response from squid if
>> network is down?
>> >
>> > Proxy server. Squid accepts clients on inside interface and
>> > connects to internet servers on outside interface.
>> > Outside interface goes down with inside interface still alive.
>> >
>> > I would actually like to have the problem/feature below, since
>> > that would mean no clients get stuck at the nonfunctioning squid
>> > instead of moving to the next squid in the roundrobin failover.
>>
>>
>> If you read the original post, he mentions squid terminating when
>> network goes down.
>
> Yes. I have had the case that the outside interface is
> nonfunctioning, but squid is still up and accepts clients
> on the inside interface. Squid then becomes a black hole
> for client traffic, so I would prefer a terminating squid
> in that case.

 Configuring the layer as siblings can help with this case. The
 black-holed requests get some extra lag going through two or more of the
 siblings trying to find a good path or even just a cached stale result.
 Not great, but better than nothing.

>
>> No clients get stuck at the nonfunctioning squid in a
>> cache-hierarcy. They would move on to the next one as is, since that
>> one is already marked as dead and removed from roundrobin pool. So
>> that feature is built-in already (if I am not misunderstanding your
>> scenario).
>
> No cache-hierarchy, just several redundant squid servers on
> the same level. Roundrobin is handled by internal DNS, which
> has multiple A-records for the hostname "proxy".

 Uhm. That would be a 1-layer hierarchy with round-robin LB.

 Amos
Received on Wed Jul 13 2011 - 03:23:57 MDT