[Samba] winbindd not starting cleanly when Centos 7 boots

[Jim Long]

I am a longtime BSD user but new to CentOS.

I have winbindd configured to start automatically:

# ls -l $(locate winbind | grep service)
lrwxrwxrwx. 1 root root  39 Aug 20 12:29 /etc/systemd/system/multi-user.target.wants/winbind.service -> /usr/lib/systemd/system/winbind.service
-rw-r--r--. 1 root root 362 May 12 13:19 /usr/lib/systemd/system/winbind.service
# cat /usr/lib/systemd/system/winbind.service
[Unit]
Description=Samba Winbind Daemon
After=syslog.target network.target nmb.service

[Service]
Environment=KRB5CCNAME=/run/samba/krb5cc_samba
Type=notify
NotifyAccess=all
PIDFile=/run/winbindd.pid
EnvironmentFile=-/etc/sysconfig/samba
ExecStart=/usr/sbin/winbindd "$WINBINDOPTIONS"
ExecReload=/usr/bin/kill -HUP $MAINPID

[Install]
WantedBy=multi-user.target
#

winbindd does start at boot time, but doesn't work:

# reboot
Connection to centos closed by remote host.
Connection to centos closed.
$ ping -o centos && ssh centos
PING centos (10.160.171.246): 56 data bytes
64 bytes from 10.160.171.246: icmp_seq=44 ttl=64 time=0.350 ms

--- centos ping statistics ---
45 packets transmitted, 1 packets received, 97.8% packet loss
round-trip min/avg/max/stddev = 0.350/0.350/0.350/0.000 ms
Last login: Thu Sep 10 12:33:01 2015 from 10.160.171.161
# uptime
 13:29:15 up 0 min,  2 users,  load average: 1.58, 0.38, 0.13
# findps winb
root      1303  0.4  0.1 348400  5372 ?        Ss   13:29   0:00 /usr/sbin/winbindd
root      1375  0.0  0.1 348304  3856 ?        S    13:29   0:00 /usr/sbin/winbindd
# wbinfo -i longj22
failed to call wbcGetpwnam: WBC_ERR_DOMAIN_NOT_FOUND
Could not get info for user longj22
# wbinfo -i longj22
failed to call wbcGetpwnam: WBC_ERR_DOMAIN_NOT_FOUND
Could not get info for user longj22
# service winbind restart
Restarting winbind (via systemctl):                        [  OK  ]
# wbinfo -i longj22
longj22:*:324960:70513:Jim Long:/home/longj22:/bin/bash
# findps winb
root      2805  0.0  0.0 340988  3056 ?        Ss   13:29   0:00 /usr/sbin/winbindd
root      2806  1.3  0.1 379268  7276 ?        S    13:29   0:00 /usr/sbin/winbindd
root      2807  1.0  0.1 377172  6524 ?        S    13:29   0:00 /usr/sbin/winbindd
# uptime
 13:29:44 up 1 min,  2 users,  load average: 1.04, 0.35, 0.12

It's apparent that at boot time, two winbindd processes are running.  After the service
is restarted, there are three.  Is this significant?

More to the point, how can I adjust my service definition file to start
the winbind service correctly at boot time?

Thank you!


Jim