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Re: server hangs for a few seconds...


On Jun 26, 2007, at 2:35 AM, Amedeo Mantica wrote:

Hello, this is the third time that happen, ny server hangs for about a minute and all clients are hung too...

here a system.log during the hung...

Jun 26 11:22:40 server servermgrd: servermgr_dns: Reloaded named
Jun 26 11:22:42 server postfix/smtpd[4868]: warning: 83.168.106.29: hostname 106-29.espol.com.pl verification failed: Host not found
Jun 26 11:22:42 server servermgrd: servermgr_dns: Reloaded named
Jun 26 11:22:42 server DirectoryService[62]: Search connection failure: During an attempt to bind to [127.0.0.1] LDAP server.
Jun 26 11:22:42 server DirectoryService[62]: Search connection failure: Disabled future attempts to bind to [127.0.0.1] LDAP server for next 0 seconds.
Jun 26 11:22:55 server postfix/smtpd[4863]: warning: 37.13.254.17.relays.ordb.org: RBL lookup error: Host or domain name not found. Name service error for name=37.13
.254.17.relays.ordb.org type=A: Host not found, try again
Jun 26 11:23:02 server mDNSResponder: Repeated transitions for interface fw0 (192.168.100.1); delaying packets by 5 seconds
Jun 26 11:23:12 server postfix/smtpd[4867]: warning: 140.138.4.123.relays.ordb.org: RBL lookup error: Host or domain name not found. Name service error for name=140.
138.4.123.relays.ordb.org type=A: Host not found, try again
Jun 26 11:23:28 server pop3[4826]: AOD: authentication error: cannot find user: insigno (0)
Jun 26 11:23:28 server pop3[4826]: badlogin: filippo.lan.insigno.it [192.168.1.12] APOP (<email@hidden>) Error: -4
Jun 26 11:23:28 server DirectoryService[62]: Search connection failure: During an attempt to bind to [127.0.0.1] LDAP server.
Jun 26 11:23:28 server DirectoryService[62]: Search connection failure: Disabled future attempts to bind to [127.0.0.1] LDAP server for next 0 seconds.

Are you using firewire as your primary interface? I would guess from this that a network interface is flapping (fw0?), causing the DNS service to restart. Higher-layer services may then block on DNS requests.

I've not had experience with use of IP over firewire for extended periods of time, but I'm pretty certain that an average firewire bus is a lot more 'volatile' than your average ethernet port (or collision domain, I suppose...). I would use ethernet if at all possible, and restrict the use of IP over firewire to be on an 'as needed' basis only. Disable the interface entirely when not using it.

HTH,
-Andre
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 >server hangs for a few seconds... (From: Amedeo Mantica <email@hidden>)



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