Hi List, This one has me completely stumped. I hope that someone out there can help.
Setup: 1 PDC (Samba 3.0.10-1.4E.2 from redhat as 4) also doing WINS. [I know there's an update, but it doesn't help. I'm trying to keep as many variables static for troubleshooting as possible.] On March 8, my server rebooted mysteriously overnight (the only info I have is from the BMC, which indicates cpu shutdowns and then later power loss in both power supplies). Up until this point, samba was working flawlessly as a PDC (non-production at this point). I'm running Redhat AS 4 with mostly current patches. I run an unattended (unattended.sourceforge.net) install from this machine (initiated via PXE, hosted on the same machine) to image workstations. Since this reboot, the server has performed perfectly except that samba now 'fails' intermittently. The failures that I see manifest 2 ways: 1. During the unattended install, I get 'File or resource not found' errors from my XPsp2 clients. Using unattended's "retry" feature allows a reconnection that then works until the end of install. This process was completely hands free and working without error before the server reboot. When a connection 'dies', the smbd is still running on the server, but falls back to root credentials. Subsequent connections spawn a new pid. I can see in the logs that credentials are supplied automatically from the clients cached values. 2. After a fresh imaging, I cannot perform a domain logon until I've logged in locally. (I do nothing more than log in and then back out.) Subsequent reboots of the machine will allow a working domain logon if I wait for ~30 seconds before attempting. If I try before that, I either get a <domain> not found message (first logon for this user) or a cached session/profile if the user had logged in previously. (My policies trigger messages about \Desktop being unavailable, etc.). When working with a cached logon, I can simply hit F5 to get my desktop icons back from the samba server (logs show cached credentials being supplied)... The event logs on the XP box show a NETLOGON:5719 error that indicates the RPC server cannot be found when logons fail (or allow a cached session). Google hasn't turned up anything helpful (lots of interesting things) so far. All of the RPC Server searches I've done lead me down roads that haven't helped at all. I don't think it's a WINS/DNS issue as the setup does still (mostly) work. I thought I had a bad NIC in my box, so I switched to the alternate (moved all IP settings, etc) and things seemed to work well for the better part of a week. After the weekend (this is now the 20th), the problem reoccured. Logons fail after a boot, imaging fails sometimes. I still feel like I'm fighting bad hardware, but can find no indication of this. All other services on the box are fine, the machine itself has run properly since the incident, etc. Since then I've been poring through logs, sniffing packets (I even have the machines on a hub right now for easier sniffing), poking various settings, etc. Nothing seems to resolve this. I've now wiped out (after grabbing a backup) my passdb.tdb, secrets.tdb and all files under /var/cache/samba. No luck. I can post smb.conf if anyone thinks it might help, but it hasn't changed (with the exception of logging values). I can post any other info that may help too (sniffing logs?)...Anything that might help eliminate samba from the problem scenario and point me in a better (hardware?) direction would be of benefit too. Thanks -Ben -- Ben Walton Systems Programmer Office of Planning & IT Faculty of Arts & Science University of Toronto Cell: 416.407.5610 PGP Key Id: 8E89F6D2
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