On Fri, 2012-11-16 at 15:49 +1030, Andrew Galdes wrote: > Hello all, > > I've recently posted here for help with a Samba domain member system which > seems to lose it's domain membership. I want to discuss it a little more. I > have more information. I'm after comments and suggestions for > troubleshooting. Also, i say "loses membership" but i don't really know if > it has lost it. Just doesn't work anymore until i re-join the Samba system > to the domain. > > I have noticed this behaviour with two sites (installations) now. Both are > CentOS systems with Samba versions as follows: > > samba-*-3.5.10-125.el6.x86_64 > samba-*-3.5.10-115.el6_2.x86_64 > > I successfully join these systems to Active Directory domains (2008 r2 > DC's) using the following command. The system can then do as i need and > "wbinfo" works: > > net join -U Administrator%MyPass > > After some time the Samba servers will stop functioning as expected and > users will get 'access denied' errors. "wbinfo" stops working. > > Some error messages: > > LOG FILE: "/var/log/samba/log.wb-MYDOM" > > [2012/11/12 13:20:43.338947, 0] > libsmb/cliconnect.c:1052(cli_session_setup_spnego) > Kinit failed: Preauthentication failed > [2012/11/12 13:20:43.459457, 2] > winbindd/winbindd_pam.c:2121(winbindd_dual_pam_auth_crap) > NTLM CRAP authentication for user [MYDOM]\[myuser] returned > NT_STATUS_ACCESS_DENIED (PAM: 4) > > Notice Kinit in the above error. I have not configured Kerberos at this > point. > > I have not identified consistent time intervals for these 'drop-outs'. I > have not updated (YUM) these systems between the joining and dropping from > the domains. > > What might cause this?
What causes this is that when we change our domain membership password, and the connection to the DC we change against times out. There is a patch in later releases for this (gives a longer timeout). The issue is, this takes longer than we allow, so we think it failed, but it actually succeed, and so we loose our membership. Andrew Bartlett -- Andrew Bartlett http://samba.org/~abartlet/ Authentication Developer, Samba Team http://samba.org -- To unsubscribe from this list go to the following URL and read the instructions: https://lists.samba.org/mailman/options/samba
