Hi,

thanks for the confirmation. In this case, you can fix the issue with the following procedure:

To fix the master that was missing the "cn=changelog5,cn=config" entry follow these steps:

[1]  Remove the directory /var/lib/dirsrv/slapd-XXX/cldb
[2]  Use ldapmodify and add this entry

dn: cn=changelog5,cn=config
changetype: add
objectclass: top
objectclass: extensibleObject
cn: changelog5
nsslapd-changelogdir: /var/lib/dirsrv/slapd-XXX/cldb
nsslapd-changelogmaxage: 30d

[3]  Reinitialize this master from another "good" master, as this master is most likely out of date now.

Don't forget to replace the slapd-XXX with your actual instance name.

HTH,

flo

On Tue, Jun 1, 2021 at 7:55 PM Sinh Lam <sinh@paran0id.org> wrote:

Hi Florence -

Thank you for your response. So to answer your question -

1) the directory does exist on the master
2) the cn=changelog5,cn=config entry is missing in the dse.ldif file.

Thanks.

Sinh

On June 1, 2021 at 9:25:53 AM, Florence Renaud (flo@redhat.com) wrote:

Hi,
the error looks similar to https://bugzilla.redhat.com/show_bug.cgi?id=1590974
Most of the comments are private in this BZ because they refer to customer deployments, but the issue can happen if cn=changelog5,cn=config is missing on the master AND the changelog directory is present.

Can you check on the master if there is a directory: /var/lib/dirsrv/slapd-XXX/cldb and if there is an entry cn=changelog5,cn=config in /etc/dirsrv/slapd-XXX/dse.ldif?
flo

On Wed, May 26, 2021 at 8:41 PM Sinh Lam via FreeIPA-users <freeipa-users@lists.fedorahosted.org> wrote:
Hi Everyone -

I’m running into this odd issue I can’t seem to find a resolution to. Long story short, my IPA master was on a system that had a power failure. Upon bring up, the dirsrv failed to start up due to a zero byte dse.ldif file. Used a “backup” of the file and my master seemed to have came back up ok however replication seems to have stopped working.

When I noticed that replication wasn’t working from the replicas to the master I went digging and found this (which led me to try to recover by removing the old replicas and trying to do a reinstall) :

replica.domain.net: replica
last update status: Error (6) Replication error acquiring replica: Unable to acquire replica: there is no replicated area on the consumer server. Replication is aborting. (no such replica)
last update ended: 2021-05-20 15:29:28+00:00

The above “last update” corresponds with the power outage that took down the IPA master.

I’m trying to re-initialize the replication by doing a reinstall of the replica server but I’m failing with the following error :

Disabled p11-kit-proxy
Configuring directory server (dirsrv). Estimated time: 30 seconds
[1/42]: creating directory server instance
[2/42]: configure autobind for root
[3/42]: tune ldbm plugin
[4/42]: stopping directory server
[5/42]: updating configuration in dse.ldif
[6/42]: starting directory server
[7/42]: adding default schema
[8/42]: enabling memberof plugin
[9/42]: enabling winsync plugin
[10/42]: configure password logging
[11/42]: configuring replication version plugin
[12/42]: enabling IPA enrollment plugin
[13/42]: configuring uniqueness plugin
[14/42]: configuring uuid plugin
[15/42]: configuring modrdn plugin
[16/42]: configuring DNS plugin
[17/42]: enabling entryUSN plugin
[18/42]: configuring lockout plugin
[19/42]: configuring topology plugin
[20/42]: creating indices
[21/42]: enabling referential integrity plugin
[22/42]: configuring certmap.conf
[23/42]: configure new location for managed entries
[24/42]: configure dirsrv ccache and keytab
[25/42]: enabling SASL mapping fallback
[26/42]: restarting directory server
[27/42]: creating DS keytab
[28/42]: ignore time skew for initial replication
[29/42]: setting up initial replication
[error] DatabaseError: Operations error: The changelog directory [/var/lib/dirsrv/slapd-REPLICA-DOMAIN-NET/cldb] already exists and is not empty. Please choose a directory that does not exist or is empty.
Your system may be partly configured.
Run /usr/sbin/ipa-server-install --uninstall to clean up.

Operations error: The changelog directory [/var/lib/dirsrv/slapd-REPLICA-DOMAIN-NET/cldb] already exists and is not empty. Please choose a directory that does not exist or is empty.
The ipa-replica-install command failed. See /var/log/ipareplica-install.log for more information

I’ve since done several uninstalls and verified at each uninstall the /var/lib/dirsrv directory is empty.

Any pointers on how to get past this issue would be great since I have about 10 more replicas to get back up.

Thanks.

Sinh

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