Re: [squid-users] Squid reverse proxy load balancing

Ben Hollingsworth wrote:
> I've got squid running as a reverse proxy, terminating HTTPS requests
> and forwarding them to HTTP(S) servers on the inside. I've now gotten
> a request to use this same proxy to load balance requests between
> multiple internal servers. It looks like you can do this by
> specifying two "cache_peer" lines with different IP's, and putting the
> "round-robin" flag on them, like this:
>
> cache_peer InsideIP1 parent 80 0 no-query originserver login=PASS
> name=InsideName-peer round-robin
> cache_peer InsideIP2 parent 80 0 no-query originserver login=PASS
> name=InsideName-peer round-robin
>
>
> Using this setup, what will happen if one of those servers goes down?
> Will half of the requests fail, or will squid transparently resend the
> request to the working server?
>
> Is there any way to specify automatic connection persistence, where
> all requests from a certain client will go to the same back end server
> so as to maintain session state & the like? I don't want to split
> them up manually using ACL's; I want squid to do this for me while
> allowing for down servers (see above).

BTW, I'm running Squid 2.6.STABLE6 on RHEL 5.