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Troubleshooting/Directory Server

This page contains troubleshooting advice for directory server issues. For other issues, refer to the index at Troubleshooting.

Replication issues

  • If changes done on one FreeIPA master are not replicated to another master, always verify errors log on both master and replica. It most often contains exact error what is wrong
  • Make sure that there are no DNS issues and both replicas can resolve each other's forward and reverse DNS records or that /etc/hosts does not contain address of the remote DS with it's short them being the primary (first) name.
  • Make sure that the system time difference on the FreeIPA masters is not greater than 5 minutes
  • In case of Kerberos issues in the log, verify that the DS keytab is correct and can be used to query other master:
    # kinit -kt /etc/dirsrv/ds.keytab ldap/`hostname`
    # klist
    # ldapsearch -Y GSSAPI -h `hostname` -b "" -s base
    # ldapsearch -Y GSSAPI -h the.other.master.fqdn -b "" -s base
  • Make sure that DS communication is not failing because of wrong default for SASL communication buffer (FreeIPA ticket with more information). This can be detected by seeing following error message in /var/log/messages or systemctl status dirsrv@YOUR-INSTANCE.service unit log in case of systemd:
    [01/Dec/2014:12:00:00 +0100] - sasl_io_recv failed to decode packet for connection xxxx

Obsolete RUV records

  • If the FreeIPA infrastructure keep getting obsolete RUV records (ipa-replica-manage list-ruv) which cannot be removed by ipa-replica-manage clean-ruv command and for example give status like RID XX Waiting to process all the updates from the deleted replica... but never finish, make sure that IPv6 is not disabled on the FreeIPA replicas (related freeipa-users thread)
  • Obsolete CA RUV records. FreeIPA < 4.4 doesn't have means to remove obsolete CA RUVs. They usually manifest in directory server log as
    attrlist_replace - attr_replace (nsslapd-referral, ldap://my.ipa.test:389/o%3Dipaca) failed.
    recovery is described at FreeIPA users list post

Performance tuning

See hardware recommendations and Directory server tuning.

Advanced Troubleshooting

See troubleshooting section of 389 Directory Server FAQ including the information how to retrieve a core dump and a stacktrace if the Directory Server is crashing.