In the last 24 hours I've started seeing thousands of requests to my LDAP server being sent by the squid_ldap_auth helper. In my cache.log I'm seeing hundreds of "squid_ldap_auth: WARNING, LDAP search error 'Can't contact LDAP server'" entries, interspersed with "2011/03/09 10:49:29| commBind: Cannot bind socket FD 76 to *:0: (98) Address already in use". The CPU usage on my LDAP sever is extremely high and this is obviously causing problem for my users
tcpdump shows the requests going to the LDAP server have no "user" information i.e cn..none.*..groupMembership..cn=InternetAccess,o=org and that for each request to LDAP there is NO corresponding request to Squid. It's as if a process on one of my internal machines is sending a request in such a way that the squid_ldap_auth helper is getting stuck yet I can't see this in the tcpdump trace either. Reloading or restarting Squid relieves the problem for a short while but it soon reoccurs I'm using Squid 2.7Stable6-6.1 on openSuSE_11.3 64 bit with all modules up to date from the official SuSE repos. Squid is a forward proxy only and there is nothing suspicious coming from the Internet at large Please help in tracking down the cause of this problem Thanks Paul
