Re: [squid-users] squid accel peer load balancing weighted round robin?

Sylvain Viart wrote:
> Hi,
>
> To sum up:
>
> * proxy squid 2.6.STABLE16
> * accelerator, squid only speak to apache2 (originserver), no other
> proxy speaking together.
> * I want to weight loadblance the squid query to the parent (origin)
> * + I want to filter the url in 2 type static and php. static
> o URL are directed to the static peer, not balanced
> o any php content URL are directed to php peer with weighted
> round-robin selection.
>
> squid behavior seems to be bugged when I put :
> cache_peer php-01 parent 80 0 no-query originserver round-robin
> weight=2 login=PASS
> #cache_peer php-02 parent 80 0 no-query originserver round-robin
> weight=0 login=PASS
> cache_peer php-03 parent 80 0 no-query originserver round-robin
> weight=2 login=PASS
> cache_peer php-04 parent 80 0 no-query originserver round-robin
> weight=1 login=PASS
> cache_peer php-05 parent 80 0 no-query originserver round-robin
> weight=2 login=PASS
> cache_peer php-06 parent 80 0 no-query originserver round-robin
> weight=2 login=PASS
> cache_peer php-07 parent 80 0 no-query originserver round-robin
> weight=3 login=PASS
> cache_peer php-08 parent 80 0 no-query originserver round-robin
> weight=2 login=PASS
>
> weight are not respected and all the load seems to "fall" on the last
> declared peer.
SNIP
>
>
> I tested the CARP config and squid complain about the conf syntax:
>
> cache_peer php-01 parent 80 0 no-query no-digest originserver
> login=PASS carp-load-factor=0.062500

The 2.6 STABLE 16 changed the cache_peer CARP directive. See
http://www.squid-cache.org/Versions/v2/2.6/squid-2.6.STABLE16-RELEASENOTES.html#s2
and http://www.squid-cache.org/Versions/v2/2.6/cfgman/cache_peer.html

carp_load_factor has been done away with, and now it seems you would
just replace "round-robin" in your config above with "carp".

> cache_peer php-03 parent 80 0 no-query no-digest originserver
> login=PASS carp-load-factor=0.062500
> cache_peer php-04 parent 80 0 no-query no-digest originserver
> login=PASS carp-load-factor=0.062500
> cache_peer php-05 parent 80 0 no-query no-digest originserver
> login=PASS carp-load-factor=0.062500
> cache_peer php-06 parent 80 0 no-query no-digest originserver
> login=PASS carp-load-factor=0.062500
> cache_peer php-07 parent 80 0 no-query no-digest originserver
> login=PASS carp-load-factor=0.187500
> cache_peer php-08 parent 80 0 no-query no-digest originserver
> login=PASS carp-load-factor=0.062500
> cache_peer php-09 parent 80 0 no-query no-digest originserver
> login=PASS carp-load-factor=0.437500
>
> squid -k parse
> 2007/11/06 16:08:36| parse_peer: token='carp-load-factor=.062500'
> FATAL: Bungled squid.conf line 592: cache_peer varan-01 parent 80 0
> no-query no-digest originserver login=PASS carp-load-factor=.062500
>
> Squid Cache: Version 2.6.STABLE16
> configure options: '--prefix=/usr' '--exec_prefix=/usr'
> '--bindir=/usr/sbin' '--sbindir=/usr/sbin'
> '--libexecdir=/usr/lib/squid' '--sysconfdir=/etc/squid'
> '--localstatedir=/var/spool/squid' '--datadir=/usr/share/squid'
> '--enable-async-io' '--with-pthreads'
> '--enable-storeio=ufs,aufs,coss,diskd,null' '--enable-linux-netfilter'
> '--enable-arp-acl' '--enable-epoll'
> '--enable-removal-policies=lru,heap' '--enable-snmp'
> '--enable-delay-pools' '--enable-htcp' '--enable-cache-digests'
> '--enable-underscores' '--enable-referer-log' '--enable-useragent-log'
> '--enable-auth=basic,digest,ntlm' '--enable-carp'
> '--enable-follow-x-forwarded-for' '--with-large-files'
> '--with-maxfd=65536' 'i386-debian-linux'
> 'build_alias=i386-debian-linux' 'host_alias=i386-debian-linux'
> 'target_alias=i386-debian-linux'
>
> carp seems to be enabled...
>
> Regards,
> Sylvain.

Chris
Received on Tue Nov 06 2007 - 11:23:40 MST