On 08/10/11 03:51, Artemis Braja wrote:
Hello, I'm running two frontends instances on ports 3128 and 3129, and two backend instances on ports 4001 and 4002 on the same box, and loadbalancing between parents using carp. cache_peer localhost parent 4001 0 carp name=backend-1 cache_peer localhost parent 4002 0 carp name=backend-2 squid -v Squid Cache: Version 3.1.15 configure options: '--enable-async-io' '--enable-linux-netfilter' '--enable-storeio=ufs,aufs' '--exec-prefix=/usr' '--bindir=/usr/sbin' '--libexecdir=/usr/lib/squid' '--enable-carp' '--enable-cache-digests' '--enable-removal-policies=lru,heap' --with-squid=/opt/squid-3.1.15 --enable-ltdl-convenience After successfully starting all instances I see on the frontends cache.log: 2011/10/07 16:10:56| TCP connection to localhost/4001 failed 2011/10/07 16:10:56| TCP connection to localhost/4002 failed 2011/10/07 16:10:57| TCP connection to localhost/4001 failed 2011/10/07 16:10:57| TCP connection to localhost/4002 failed 2011/10/07 16:10:57| Detected DEAD Parent: backend-2 2011/10/07 16:10:58| TCP connection to localhost/4001 failed 2011/10/07 16:10:58| Detected DEAD Parent: backend-1 2011/10/07 16:11:19| temporary disabling (Service Unavailable) digest from localhost 2011/10/07 16:20:16| TCP connection to localhost/4002 failed 2011/10/07 16:25:20| temporary disabling (Service Unavailable) digest from localhost Because only backends are caching, not connecting to then all traffic from frontends is forwarded to the origin servers, making the storages useless.
Add no-digest to the cache_peer lines on the frontend. That will silence the digest messages and make it a little bit longer before DEAD gets triggered.
Check that your backend were actually finished loading their caches and listening for new traffic before the frontend were connected to them.
Note that Squid-3.1 is IPv6-enabled software so "localhost" is probably the IP address ::1. You may need to check your IPv6 firewall settings to verify the layers can connect over localhost.
Amos -- Please be using Current Stable Squid 2.7.STABLE9 or 3.1.15 Beta testers wanted for 3.2.0.12
