[Freeipa-users] SSSD to IPA connection?

[Janelle]

Happy New Year everyone!

I came across a couple of my servers having some strange connection 
problems and was wondering if anyone else has seen this or know what 
might cause it? This is IPA 4.1.4 and client on RHEL 7.1. When you look 
at the status, for some reason, SSSD has lost contact with the servers, 
and a restart is required. What I don't understand is what this 
"Preauth" failure is?

Ideas?
~Janelle

Redirecting to /bin/systemctl status  sssd.service
sssd.service - System Security Services Daemon
    Loaded: loaded (/usr/lib/systemd/system/sssd.service; enabled)
   Drop-In: /etc/systemd/system/sssd.service.d
            └─journal.conf
    Active: active (running) since Sat 2015-12-12 07:41:55 EST; 2 weeks 
4 days ago
   Process: 24482 ExecStart=/usr/sbin/sssd -D -f (code=exited, 
status=0/SUCCESS)
  Main PID: 24483 (sssd)
    CGroup: /system.slice/sssd.service
            ├─24483 /usr/sbin/sssd -D -f
            ├─24484 /usr/libexec/sssd/sssd_be --domain example.com --uid 
0 --gid 0 --debug-to-files
            ├─24485 /usr/libexec/sssd/sssd_nss --uid 0 --gid 0 
--debug-to-files
            ├─24486 /usr/libexec/sssd/sssd_pam --uid 0 --gid 0 
--debug-to-files
            ├─24487 /usr/libexec/sssd/sssd_ssh --uid 0 --gid 0 
--debug-to-files
            └─24488 /usr/libexec/sssd/sssd_pac --uid 0 --gid 0 
--debug-to-files

Jan 01 07:55:24 client.example.com [sssd[krb5_child[10456]]][10456]: 
Preauthentication failed
Jan 01 07:56:07 client.example.com [sssd[krb5_child[10464]]][10464]: 
Preauthentication failed
Jan 01 07:57:16 client.example.com [sssd[krb5_child[10471]]][10471]: 
Preauthentication failed
Jan 01 08:10:48 client.example.com sssd_be[12345]: GSSAPI client step 1
Jan 01 08:10:48 client.example.com sssd_be[12345]: GSSAPI client step 1
Jan 01 08:10:49 client.example.com sssd_be[12345]: GSSAPI client step 1
Jan 01 08:10:49 client.example.com sssd_be[12345]: GSSAPI client step 2
Jan 01 08:20:10 client.example.com [sssd[krb5_child[10538]]][10538]: 
Preauthentication failed
Jan 01 08:20:29 client.example.com [sssd[krb5_child[10541]]][10541]: 
Preauthentication failed
Jan 01 08:20:48 client.example.com [sssd[krb5_child[10596]]][10596]: 
Preauthentication failed