[Freeipa-users] IPA sporadic behavior

[John Williams]

I've got some sporadic behavior on my IPA instance and I'm hoping someone can help me resolve the issue.  The problem is that many times my clients cannot authenticate to the respective hosts.  First, my environment.  Some details:
ipa2 - centos 6.3 -  ipa server 3.0.0ipa3 - centos 7.1 - ipa server 4.1.0
We had a FreeIPA server host ipa1 that died some time ago.  I do not have any details on that host.
Again, the problem is that clients cannot authenticate very frequently.  
Here are some examples of the problems I am having:  I client can login to the console of a CentOS 6.7 host, but cannot SSH into it.  One user can login to a host, but another user cannot.
Some diagnostics information:
Services running on IPA servers:
[root at ipa2 ~]# ps -ef | grep krbroot      6007  5936  0 19:21 pts/5    00:00:00 grep krbroot     22339     1  0 Feb06 ?        00:00:00 /usr/sbin/krb5kdc -r AAA -P /var/run/krb5kdc.pid -w 2root     22344 22339  0 Feb06 ?        00:42:56 /usr/sbin/krb5kdc -r AAA -P /var/run/krb5kdc.pid -w 2root     22345 22339  0 Feb06 ?        00:42:50 /usr/sbin/krb5kdc -r AAA -P /var/run/krb5kdc.pid -w 2
[root at ipa3 ~]# ps -ef | grep  krbroot      2513     1  0  2015 ?        00:00:00 /usr/sbin/krb5kdc -P /var/run/krb5kdc.pid -w 2root      2514  2513  0  2015 ?        00:01:20 /usr/sbin/krb5kdc -P /var/run/krb5kdc.pid -w 2root      2515  2513  0  2015 ?        00:01:18 /usr/sbin/krb5kdc -P /var/run/krb5kdc.pid -w 2root      5702  5609  0 19:20 pts/1    00:00:00 grep --color=auto krb
slapd is running on both servers:
[root at ipa3 ~]# ps -ef | grep slapddirsrv    2464     1  0  2015 ?        09:39:37 /usr/sbin/ns-slapd -D /etc/dirsrv/slapd-IDEF -i /var/run/dirsrv/slapd-IDEF.pid -w /var/run/dirsrv/slapd-IDEF.startpidroot      5707  5609  0 19:25 pts/1    00:00:00 grep --color=auto slapd[root at ipa3 ~]# 

[root at ipa2 ~]# ps -ef | grep slapdroot      6024  5936  0 19:26 pts/5    00:00:00 grep slapddirsrv   22137     1  3 Feb06 ?        1-20:48:55 /usr/sbin/ns-slapd -D /etc/dirsrv/slapd-AAA -i /var/run/dirsrv/slapd-AAA .pid -w /var/run/dirsrv/slapd-AAA .startpidpkisrv   22209     1  0 Feb06 ?        00:44:54 /usr/sbin/ns-slapd -D /etc/dirsrv/slapd-PKI-IPA -i /var/run/dirsrv/slapd-PKI-IPA.pid -w /var/run/dirsrv/slapd-PKI-IPA.startpid[root at ipa2 ~]# 
System time is synchronized across all hosts.
For DNS, I have the following entries:
[root at sharedone ~]# dig ipa.BBB.AAA +short192.168.120.253[root at sharedone ~]# dig ipa2.BBB.AAA +short192.168.120.253[root at sharedone ~]# dig ipa3.BBB.AAA +short192.168.120.139[root at sharedone ~]# 
Now the ipa.AAA.AAA server does not exist anymore because it died.  But if I remove that DNS entrey everything stops working and no one can authenticate, versus the sporadic issues we are having.
If you need more detials or specific information, please let me know.  I'm at a loss as to what causes this behavior.
Thanks,
JT
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