just realized that it's probably not an instablity, but some process is
killing sssd:

[root@wn113 sssd]# zcat sssd.log-20150804.gz
(Mon Aug  3 20:30:55 2015) [sssd] [mt_svc_sigkill] (0x0010):
[pleiades.uni-wuppertal.de][5957] is not responding to SIGTERM. Sending
SIGKILL.
(Mon Aug  3 20:31:31 2015) [sssd] [mt_svc_sigkill] (0x0010): [nss][7211]
is not responding to SIGTERM. Sending SIGKILL.
(Mon Aug  3 20:31:43 2015) [sssd] [mt_svc_exit_handler] (0x0010):
Process [nss], definitely stopped!

[root@wn113 log]# grep sssd messages
Aug  3 20:31:36 wn113 sssd[nss]: Starting up
Aug  3 20:31:36 wn113 sssd[be[pleiades.uni-wuppertal.de]]: Starting up
Aug  3 20:31:39 wn113 sssd[nss]: Starting up
Aug  3 20:31:43 wn113 sssd[nss]: Starting up
Aug  3 20:32:33 wn113 sssd[be[pleiades.uni-wuppertal.de]]: Shutting down
Aug  3 20:32:33 wn113 sssd[pac]: Shutting down
Aug  3 20:32:33 wn113 sssd[ssh]: Shutting down
Aug  3 20:32:34 wn113 sssd[pam]: Shutting down
Aug  3 20:32:34 wn113 sssd[sudo]: Shutting down


No one of the admins were logged in during that time and also "last"
doesn't show any login.

sssd was installed as a dependency from ipa-client and was
autoconfigured by ipa-client-install. The config file looks normal to me:

[domain/pleiades.uni-wuppertal.de]

cache_credentials = True
krb5_store_password_if_offline = True
ipa_domain = pleiades.uni-wuppertal.de
id_provider = ipa
auth_provider = ipa
access_provider = ipa
ipa_hostname = wn113.pleiades.uni-wuppertal.de
chpass_provider = ipa
ipa_server = _srv_, ipa2.pleiades.uni-wuppertal.de,
ipa.pleiades.uni-wuppertal.de
ldap_tls_cacert = /etc/ipa/ca.crt
[sssd]
services = nss, sudo, pam, ssh
config_file_version = 2

domains = pleiades.uni-wuppertal.de
[nss]
homedir_substring = /home

[pam]

[sudo]

[autofs]

[ssh]

[pac]

[ifp]

sssd.conf (END)


Anybody seen something like this already?


Best regards

  Torsten

-- 
<><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><>
<>                                                              <>
<> Dr. Torsten Harenberg     harenb...@physik.uni-wuppertal.de  <>
<> Bergische Universitaet                                       <>
<> FB C - Physik             Tel.: +49 (0)202 439-3521          <>
<> Gaussstr. 20              Fax : +49 (0)202 439-2811          <>
<> 42097 Wuppertal                                              <>
<>                                                              <>
<><><><><><><>< Of course it runs NetBSD http://www.netbsd.org ><>

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