Re: [squid-users] squid 2.6 accelerator mode

On Mon, Mar 9, 2009 at 1:24 AM, Amos Jeffries <squid3_at_treenet.co.nz> wrote:
>> I'm trying to get squid to work as a reverse proxy in front of a
>> single web server which runs domain virtualhosts:
>>
>> http_port in:80   vhost
>> cache_peer out    parent    80  0  originserver
>> 'in' is my input address, 'out' is the address of of the web server.
>>
>> The problem that I have is that each requests takes a considerable
>> time to process (in which time squid is trying to resolve the Host:
>> hostname and since I dont have a dns on the squid box, resolve never
>> succeeds). Eventually the page is served, it just waits through some
>> timeout on every request. Adding my vhosts to /etc/hosts on the squid
>> box solves the issue.
>>
>> Can I have an accelerator for a single backend server with vhosts,
>> without the need to resolve the Host: header (or if not possible, how
>> to effectivly workaround it, adding all vhosts to /etc/hosts is not an
>> option)?
>
> The recommended reverse-proxy accelerator setup does not require DNS in
> any form.
>
> http://wiki.squid-cache.org/ConfigExamples/Reverse/BasicAccelerator
>
> It is possible to direct "cache_peer_access blah allow all" to the web
> server if you only have one backend and all domains go to it. Just note
> that this removes any false-domain restrictions squid might otherwise
> provide, and only works with a single back-end.
>
> Amos
>

The provided example suggest using 'http_port ... defaultsite=...'
which ends up rewriting the Host: header in the request to the backend
server (which would not work with vhosts), and as soon as I change
that to 'http_port ... vhost' and add the 'cache_peer access ... allow
all' l get the dns timeouts.

So is it possible to have vhosts for a single backend server without dns?

BTW I`m using 2.6.STABLE6 (default rpm from centos 5).

Thanks!
Received on Mon Mar 09 2009 - 10:42:51 MDT