[SSSD-users] sssd fails to connect to LDAP after high load on the server

Daniel Jung mimianddaniel at gmail.com
Fri Aug 1 21:00:32 UTC 2014


Hi,

There were few cases where SSSD seems to stop working and required restart
when the server's load average gets high ~ 80 on 24threads(processors)
platform.

Running 6.5 centos with 1.9.2-129 x86_64

On 6.5,
sssd_nss.log shows the following:
Thu Jul 31 20:28:38 2014) [sssd[nss]] [sss_dp_init] (0x0010): Failed to
connect to monitor services.
(Thu Jul 31 20:28:38 2014) [sssd[nss]] [sss_process_init] (0x0010): fatal
error setting up backend connector
(Thu Jul 31 20:30:19 2014) [sssd[nss]] [nss_dp_reconnect_init] (0x0010):
Could not reconnect to LDAP provider.
(Thu Jul 31 20:44:16 2014) [sssd[nss]] [nss_dp_reconnect_init] (0x0010):
Could not reconnect to LDAP provider.
(Thu Jul 31 20:44:46 2014) [sssd[nss]] [nss_dp_reconnect_init] (0x0010):
Could not reconnect to LDAP provider.
(Thu Jul 31 20:45:16 2014) [sssd[nss]] [nss_dp_reconnect_init] (0x0010):
Could not reconnect to LDAP provider.
(Thu Jul 31 20:45:46 2014) [sssd[nss]] [nss_dp_reconnect_init] (0x0010):
Could not reconnect to LDAP provider.
<snip>
Fri Aug  1 19:55:18 2014) [sssd[nss]] [nss_dp_reconnect_init] (0x0010):
Could not reconnect to LDAP provider.
(Fri Aug  1 19:55:48 2014) [sssd[nss]] [nss_dp_reconnect_init] (0x0010):
Could not reconnect to LDAP provider.
(Fri Aug  1 19:56:18 2014) [sssd[nss]] [nss_dp_reconnect_init] (0x0010):
Could not reconnect to LDAP provider.


Also the /var/log/messages:
Jul 31 20:26:22  sssd[nss]: Shutting down
Jul 31 20:26:22 ssd[be[LDAP]]: Shutting down
Jul 31 20:26:24 sssd[be[LDAP]]: Starting up
Jul 31 20:26:24  sssd[nss]: Starting up
Jul 31 20:28:34  sssd[be[LDAP]]: Shutting down
Jul 31 20:28:34  sssd[nss]: Shutting down
Jul 31 20:28:38  sssd[nss]: Starting up
Jul 31 20:28:38  sssd[be[LDAP]]: Starting up
Jul 31 20:28:40  sssd[nss]: Starting up
Jul 31 20:30:05 sssd[be[LDAP]]: Shutting down
Jul 31 20:30:25  sssd[be[LDAP]]: Starting up

Seems like restart @20:30:25 didnt properly restart sssd daemon? I believe
1.9.2-129 is the latest avail?
enumerate is false, ldap_network_timeout is 5 and we have multiple ldap_uri
settings where hosts are separated by  ","

Would appreciate if you can shed some light on this. Thanks.
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