[Samba] wbinfo quits working on samba AD DC

[me at tdiehl.org]

Hi,

I have a Samba AD domain running 2 self compiled 4.7.3 DC's running on Centos 7.

Every morning if I run wbinfo -u on DC1 I do not get any info back. I have
tried reloading samba but that does not get it working. Restarting samba seems
to be the only way to get it working again.

DC2 continues to work normally.

DC1 holds the FSMO roles and also runs bind DLZ and ISC dhcp configured
per the samba wiki articles.

DC2 is only acting as a DC and DNS server with bind_DLZ.

The smb.conf files are the same on both DC's.

The smb.conf is as follows:

[global]
     realm = KMG.MYDOMAIN.COM
     server services = s3fs, rpc, nbt, wrepl, ldap, cldap, kdc, drepl, winbindd, ntp_signd, kcc, dnsupdate
     workgroup = KMG
     server role = active directory domain controller
     idmap_ldb:use rfc2307 = yes
     log file = /var/log/samba/%m.log
     max log size = 5000
     log level = 2
     idmap config KMG:unix_nss_info = yes
     template shell = /bin/bash
     template homedir = /home/samba/users/%U
     deadtime = 5

[netlogon]
     path = /usr/local/samba/var/locks/sysvol/kmg.mydomain.com/scripts
     read only = No

[sysvol]
     path = /usr/local/samba/var/locks/sysvol
     read only = No

When things are not working a ps shows the following:

(vdc1 pts6) # ps axf | egrep "samba|smbd|winbindd"
111627 pts/6    D+     0:00  |   \_ grep -E --color=auto samba|smbd|winbindd
  36675 ?        Ss     0:00 /usr/local/samba/sbin/samba -D
  36685 ?        S      0:00  \_ /usr/local/samba/sbin/samba -D
  36688 ?        S      0:00  |   \_ /usr/local/samba/sbin/samba -D
  36690 ?        Ss     0:07  |       \_ /usr/local/samba/sbin/smbd -D --option=server role check:inhibit=yes --foreground
  36708 ?        S      0:00  |           \_ /usr/local/samba/sbin/smbd -D --option=server role check:inhibit=yes --foreground
  36709 ?        S      0:00  |           \_ /usr/local/samba/sbin/smbd -D --option=server role check:inhibit=yes --foreground
  36710 ?        S      0:00  |           \_ /usr/local/samba/sbin/smbd -D --option=server role check:inhibit=yes --foreground
  72144 ?        S      0:00  |           \_ /usr/local/samba/sbin/smbd -D --option=server role check:inhibit=yes --foreground
  72768 ?        S      0:00  |           \_ /usr/local/samba/sbin/smbd -D --option=server role check:inhibit=yes --foreground
111561 ?        S      0:00  |           \_ /usr/local/samba/sbin/smbd -D --option=server role check:inhibit=yes --foreground
  36686 ?        S      6:13  \_ /usr/local/samba/sbin/samba -D
  72207 ?        S      0:00  |   \_ /usr/local/samba/sbin/samba -D
  73128 ?        S      0:00  |   \_ /usr/local/samba/sbin/samba -D
  36687 ?        S      0:09  \_ /usr/local/samba/sbin/samba -D
  36689 ?        S      0:00  \_ /usr/local/samba/sbin/samba -D
  36691 ?        S      0:04  \_ /usr/local/samba/sbin/samba -D
  36950 ?        S      1:00  |   \_ /usr/local/samba/sbin/samba -D
105803 ?        S      0:00  |   \_ /usr/local/samba/sbin/samba -D
  36692 ?        S      0:06  \_ /usr/local/samba/sbin/samba -D
  36693 ?        S      0:20  \_ /usr/local/samba/sbin/samba -D
  36694 ?        S      0:47  \_ /usr/local/samba/sbin/samba -D
  36695 ?        S      0:00  \_ /usr/local/samba/sbin/samba -D
  36702 ?        S      0:00  |   \_ /usr/local/samba/sbin/samba -D
  36704 ?        Ss     0:10  |       \_ /usr/local/samba/sbin/winbindd -D --option=server role check:inhibit=yes --foreground
  36706 ?        S      0:32  |           \_ /usr/local/samba/sbin/winbindd -D --option=server role check:inhibit=yes --foreground
  39428 ?        S      0:00  |           \_ /usr/local/samba/sbin/winbindd -D --option=server role check:inhibit=yes --foreground
  62873 ?        S      0:00  |           \_ /usr/local/samba/sbin/winbindd -D --option=server role check:inhibit=yes --foreground
  36696 ?        S      0:00  \_ /usr/local/samba/sbin/samba -D
  36697 ?        S      0:00  \_ /usr/local/samba/sbin/samba -D
  36698 ?        S      0:01  \_ /usr/local/samba/sbin/samba -D
(vdc1 pts6) #
(vdc1 pts6) # wbinfo -u
(vdc1 pts6) #

It looks to me like everything is running.
I do not see anything obvious in the logs.

Does anyone have any idea how to troubleshoot this?
Is there something in particular I should be looking for in the logs?

Regards,

-- 
Tom			me at tdiehl.org