Hi, We recently started having problems where our Squid 2.6 (squid-2.6.STABLE21-6.el5) proxy servers would stop serving requests. In my cache.log, I see many of these: 2015/04/14 01:13:45| Failure Ratio at 26.15 2015/04/14 01:13:45| Going into hit-only-mode for 5 minutes... 2015/04/14 01:18:46| Failure Ratio at 3.55 2015/04/14 01:18:46| Going into hit-only-mode for 5 minutes... 2015/04/14 01:23:46| Failure Ratio at 1.02 2015/04/14 01:23:46| Going into hit-only-mode for 5 minutes... ... 2015/04/14 06:50:58| idnsSendQuery: Can't send query, no DNS socket! 2015/04/14 06:50:58| idnsSendQuery: Can't send query, no DNS socket! 2015/04/14 06:50:58| idnsSendQuery: Can't send query, no DNS socket! 2015/04/14 06:50:58| idnsSendQuery: Can't send query, no DNS socket! I suspect this is the problem - the proxy is running out of DNS sockets. I have already determined that there are not problems with the DNS servers that these proxies are using (in their /etc/resolv.conf). Could this be caused by a bad user chewing up DNS sockets/children with invalid URL requests? The "going into hit-only-mode" errors appear to be ICP related? In this case, I believe we have ICP completely disabled: # icp_access allow allowed_src_hosts # icp_access deny all_src Could anyone offer any suggestions or advice to help figure out what is causing these problems? Thanks, Josh _______________________________________________ squid-users mailing list squid-users@xxxxxxxxxxxxxxxxxxxxx http://lists.squid-cache.org/listinfo/squid-users
