[Freeipa-users] Attempting to re-provision previous replica

John Desantis desantis at mail.usf.edu
Mon Nov 24 12:08:26 UTC 2014 

Hello again,

I was just wondering if there was an update on this thread?

Since it is just one machine having an issue, do you (Rob and Rich)
think a re-initialization from the master on the affected host would
clear the clog?  I have left it alone since Mark was brought into the
discussion.

Thank you!
John DeSantis

2014-10-23 9:34 GMT-04:00 Rich Megginson <rmeggins at redhat.com>:
> On 10/23/2014 07:01 AM, John Desantis wrote:
>>
>> Rob and Rich,
>>
>>>> ipa-replica-manage del should have cleaned things up. You can clear out
>>>> old RUVs with ipa-replica-manage too via list-ruv and clean-ruv. You use
>>>> list-ruv to get the id# to clean and clean-ruv to do the actual
>>>> cleaning.
>>>
>>> I remember having previously tried this task, but it had failed on
>>> older RUV's which were not even active (the KDC was under some strain
>>> so ipa queries were timing out).  However, I ran it again and have
>>> been able to delete all but 1 (it's still running) RUV referencing the
>>> previous replica.
>>>
>>> I'll report back once the tasks finishes or fails.
>>
>> The last RUV is "stuck" on another replica.  It fails with the following
>> error:
>>
>> [23/Oct/2014:08:55:09 -0400] NSMMReplicationPlugin - CleanAllRUV Task:
>> Initiating CleanAllRUV Task...
>> [23/Oct/2014:08:55:10 -0400] NSMMReplicationPlugin - CleanAllRUV Task:
>> Retrieving maxcsn...
>> [23/Oct/2014:08:55:10 -0400] NSMMReplicationPlugin - CleanAllRUV Task:
>> Found maxcsn (5447f861000000180000)
>> [23/Oct/2014:08:55:10 -0400] NSMMReplicationPlugin - CleanAllRUV Task:
>> Cleaning rid (24)...
>> [23/Oct/2014:08:55:10 -0400] NSMMReplicationPlugin - CleanAllRUV Task:
>> Waiting to process all the updates from the deleted replica...
>> [23/Oct/2014:08:55:10 -0400] NSMMReplicationPlugin - CleanAllRUV Task:
>> Waiting for all the replicas to be online...
>> [23/Oct/2014:08:55:10 -0400] NSMMReplicationPlugin - CleanAllRUV Task:
>> Waiting for all the replicas to receive all the deleted replica
>> updates...
>> [23/Oct/2014:08:55:11 -0400] NSMMReplicationPlugin - CleanAllRUV Task:
>> Replica maxcsn (5447f56b000200180000) is not caught up with deleted
>> replica's maxcsn(5447f861000000180000)
>> [23/Oct/2014:08:55:11 -0400] NSMMReplicationPlugin - CleanAllRUV Task:
>> Replica not caught up (agmt="cn=meToiparepbackup.our.personal.domain"
>> (iparepbackup:389))
>> [23/Oct/2014:08:55:11 -0400] NSMMReplicationPlugin - CleanAllRUV Task:
>> Not all replicas caught up, retrying in 10 seconds
>> [23/Oct/2014:08:55:23 -0400] NSMMReplicationPlugin - CleanAllRUV Task:
>> Replica maxcsn (5447f56b000200180000) is not caught up with deleted
>> replica's maxcsn(5447f861000000180000)
>> [23/Oct/2014:08:55:23 -0400] NSMMReplicationPlugin - CleanAllRUV Task:
>> Replica not caught up (agmt="cn=meToiparepbackup.our.personal.domain"
>> (iparepbackup:389))
>> [23/Oct/2014:08:55:23 -0400] NSMMReplicationPlugin - CleanAllRUV Task:
>> Not all replicas caught up, retrying in 20 seconds
>>
>> I then abort the task since the retrying went up to 14400 seconds.
>
>
> Mark, do you know what is going on here?
>
>
>>
>> Would this be a simple re-initialization from the master on the host
>> "iparepbackup"?
>>
>> Thanks,
>> John DeSantis
>>
>> 2014-10-22 16:03 GMT-04:00 John Desantis <desantis at mail.usf.edu>:
>>>
>>> Rob and Rich,
>>>
>>>> ipa-replica-manage del should have cleaned things up. You can clear out
>>>> old RUVs with ipa-replica-manage too via list-ruv and clean-ruv. You use
>>>> list-ruv to get the id# to clean and clean-ruv to do the actual
>>>> cleaning.
>>>
>>> I remember having previously tried this task, but it had failed on
>>> older RUV's which were not even active (the KDC was under some strain
>>> so ipa queries were timing out).  However, I ran it again and have
>>> been able to delete all but 1 (it's still running) RUV referencing the
>>> previous replica.
>>>
>>> I'll report back once the tasks finishes or fails.
>>>
>>> Thanks,
>>> John DeSantis
>>>
>>>
>>> 2014-10-22 15:49 GMT-04:00 Rob Crittenden <rcritten at redhat.com>:
>>>>
>>>> Rich Megginson wrote:
>>>>>
>>>>> On 10/22/2014 12:55 PM, John Desantis wrote:
>>>>>>
>>>>>> Richard,
>>>>>>
>>>>>>> You should remove the unused ruv elements.  I'm not sure why they
>>>>>>> were not
>>>>>>> cleaned.  You may have to use cleanallruv manually.
>>>>>>>
>>>>>>> https://access.redhat.com/documentation/en-US/Red_Hat_Directory_Server/9.0/html/Administration_Guide/Managing_Replication-Solving_Common_Replication_Conflicts.html#cleanruv
>>>>>>>
>>>>>>>
>>>>>>> note - use the cleanallruv procedure, not cleanruv.
>>>>>>
>>>>>> I'll try that, thanks for the guidance.
>>>>>>
>>>>>>> What is the real problem you have?  Did replication stop working? Are
>>>>>>> you
>>>>>>> getting error messages?
>>>>>>
>>>>>> I cannot get the host to be a replica.  Each time I run
>>>>>> `ipa-replica-install
>>>>>> replica-info-host-in-question.our.personal.domain.gpg' it fails.  I
>>>>>> had assumed it was due to the fact that the host was already a
>>>>>> replica, but had to be taken offline due to a hard disk failing.  The
>>>>>> machine was re-provisioned after the new hard drive was installed.
>>>>>
>>>>> Ok.  I don't know if we have a documented procedure for that case. I
>>>>> assumed that if you first ran ipa-replica-manage del, then
>>>>> ipa-replica-prepare, then ipa-replica-install, that would take care of
>>>>> that.
>>>>
>>>> ipa-replica-manage del should have cleaned things up. You can clear out
>>>> old RUVs with ipa-replica-manage too via list-ruv and clean-ruv. You use
>>>> list-ruv to get the id# to clean and clean-ruv to do the actual
>>>> cleaning.
>>>>
>>>>>> When I enabled extra debugging during the installation process, the
>>>>>> initial error was that the dirsrv instance couldn't be started.  I
>>>>>> checked into this and found that there were missing files in
>>>>>> /etc/dirsrv/slapd-BLAH directory.  I was then able to start dirsrv
>>>>>> after copying some schema files from another replica.  The install did
>>>>>> move forward but then failed with Apache and its IPA configuration.
>>>>>>
>>>>>> I performed several uninstalls and re-installs, and at one point I got
>>>>>> error code 3 from ipa-replica-install, which is why I was thinking
>>>>>> that the old RUV's and tombstones were to blame.
>>>>>
>>>>> It could be.  I'm really not sure what the problem is at this point.
>>>>
>>>> I think we'd need to see ipareplica-install.log to know for sure. It
>>>> could be the sort of thing where it fails early but doesn't kill the
>>>> install, so the last error is a red herring.
>>>>
>>>> rob
>>>>
>>>>>> Thanks,
>>>>>> John DeSantis
>>>>>>
>>>>>>
>>>>>> 2014-10-22 12:51 GMT-04:00 Rich Megginson <rmeggins at redhat.com>:
>>>>>>>
>>>>>>> On 10/22/2014 10:31 AM, John Desantis wrote:
>>>>>>>>
>>>>>>>> Richard,
>>>>>>>>
>>>>>>>> You helped me before in #freeipa, so I appreciate the assistance
>>>>>>>> again.
>>>>>>>>
>>>>>>>>> What version of 389 are you using?
>>>>>>>>> rpm -q 389-ds-base
>>>>>>>>
>>>>>>>> 389-ds-base-1.2.11.15-34.el6_5
>>>>>>>>
>>>>>>>> Thanks,
>>>>>>>> John DeSantis
>>>>>>>>
>>>>>>>> 2014-10-22 12:09 GMT-04:00 Rich Megginson <rmeggins at redhat.com>:
>>>>>>>>>
>>>>>>>>> On 10/22/2014 09:42 AM, John Desantis wrote:
>>>>>>>>>>
>>>>>>>>>> Hello all,
>>>>>>>>>>
>>>>>>>>>> First and foremost, a big "thank you!" to the FreeIPA developers
>>>>>>>>>> for a
>>>>>>>>>> great product!
>>>>>>>>>>
>>>>>>>>>> Now, to the point!
>>>>>>>>>>
>>>>>>>>>> We're trying to re-provision a previous replica using the standard
>>>>>>>>>> documentation via the Red Hat site:
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>> https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/6/html/Identity_Management_Guide/Setting_up_IPA_Replicas.html
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>> However, we're running into errors during the import process.  The
>>>>>>>>>> errors are varied and fail at random steps; there was an issue
>>>>>>>>>> with
>>>>>>>>>> NTP or HTTP or LDAP, etc.  This did not happen when we promoted a
>>>>>>>>>> separate node to become a replica.
>>>>>>>>>>
>>>>>>>>>> We had previously removed the replica via `ipa-replica-manage del`
>>>>>>>>>> and
>>>>>>>>>> ensured that no trace of it being a replica existed: removed DNS
>>>>>>>>>> records and verified that the host enrollment was not present.  I
>>>>>>>>>> did
>>>>>>>>>> not use the "--force" and "--cleanup" options.
>>>>>>>>>
>>>>>>>>> What version of 389 are you using?
>>>>>>>>> rpm -q 389-ds-base
>>>>>>>
>>>>>>> You should remove the unused ruv elements.  I'm not sure why they
>>>>>>> were not
>>>>>>> cleaned.  You may have to use cleanallruv manually.
>>>>>>>
>>>>>>> https://access.redhat.com/documentation/en-US/Red_Hat_Directory_Server/9.0/html/Administration_Guide/Managing_Replication-Solving_Common_Replication_Conflicts.html#cleanruv
>>>>>>>
>>>>>>>
>>>>>>> note - use the cleanallruv procedure, not cleanruv.
>>>>>>>
>>>>>>>>>> When I check RUV's against the host in question, there are
>>>>>>>>>> several.  I
>>>>>>>>>> also queried the tombstones against the host and found two entries
>>>>>>>>>> which have valid hex time stamps;  coincidentally, out of the 9
>>>>>>>>>> tombstone entries, 2 have "nsds50ruv" time stamps.  I'll paste
>>>>>>>>>> sanitized output below:
>>>>>>>>>>
>>>>>>>>>> # ldapsaerch -x -W -LLL -D "cn=directory manager" -b
>>>>>>>>>> "dc=our,dc=personal,dc=domain" '(objectclass=nsTombstone)'
>>>>>>>>>> Enter LDAP Password:
>>>>>>>>>> dn:
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>> nsuniqueid=ffffffff-ffffffff-ffffffff-ffffffff,dc=our,dc=personal,dc=domain
>>>>>>>>>>
>>>>>>>>>> objectClass: top
>>>>>>>>>> objectClass: nsTombstone
>>>>>>>>>> objectClass: extensibleobject
>>>>>>>>>> nsds50ruv: {replicageneration} 50ef13ae000000040000
>>>>>>>>>> nsds50ruv: {replica 4 ldap://master.our.personal.domain:389}
>>>>>>>>>> 5164d147000000040000 5447bda 8000100040000
>>>>>>>>>> nsds50ruv: {replica 22
>>>>>>>>>> ldap://separatenode.our.personal.domain:389}
>>>>>>>>>> 54107f9f000000160000 54436b 25000000160000
>>>>>>>>>> nsds50ruv: {replica 21
>>>>>>>>>> ldap://iparepbackup.our.personal.domain:389}
>>>>>>>>>> 51b734de000000150000 51b7 34ef000200150000
>>>>>>>>>> nsds50ruv: {replica 19
>>>>>>>>>> ldap://host-in-question.our.personal.domain:389}
>>>>>>>>>> 510d56c9000100130000
>>>>>>>>>> 510d82 be000200130000
>>>>>>>>>> nsds50ruv: {replica 18
>>>>>>>>>> ldap://host-in-question.our.personal.domain:389}
>>>>>>>>>> nsds50ruv: {replica 17
>>>>>>>>>> ldap://host-in-question.our.personal.domain:389}
>>>>>>>>>> nsds50ruv: {replica 16
>>>>>>>>>> ldap://host-in-question.our.personal.domain:389}
>>>>>>>>>> nsds50ruv: {replica 15
>>>>>>>>>> ldap://host-in-question.our.personal.domain:389}
>>>>>>>>>> nsds50ruv: {replica 14
>>>>>>>>>> ldap://host-in-question.our.personal.domain:389}
>>>>>>>>>> nsds50ruv: {replica 13
>>>>>>>>>> ldap://host-in-question.our.personal.domain:389}
>>>>>>>>>> nsds50ruv: {replica 12
>>>>>>>>>> ldap://host-in-question.our.personal.domain:389}
>>>>>>>>>> nsds50ruv: {replica 23
>>>>>>>>>> ldap://host-in-question.our.personal.domain:389}
>>>>>>>>>> 54187702000200170000
>>>>>>>>>> 541878 9a000000170000
>>>>>>>>>> dc: our
>>>>>>>>>> nsruvReplicaLastModified: {replica 4
>>>>>>>>>> ldap://master.our.personal.domain:389} 5447bce8
>>>>>>>>>> nsruvReplicaLastModified: {replica 22
>>>>>>>>>> ldap://separatenode.our.personal.domain:389} 54436a5e
>>>>>>>>>> nsruvReplicaLastModified: {replica 21
>>>>>>>>>> ldap://iparepbackup.our.personal.domain:389} 00000000
>>>>>>>>>> nsruvReplicaLastModified: {replica 19
>>>>>>>>>> ldap://host-in-question.our.personal.domain:389} 00000000
>>>>>>>>>> nsruvReplicaLastModified: {replica 18
>>>>>>>>>> ldap://host-in-question.our.personal.domain:389} 00000000
>>>>>>>>>> nsruvReplicaLastModified: {replica 17
>>>>>>>>>> ldap://host-in-question.our.personal.domain:389} 00000000
>>>>>>>>>> nsruvReplicaLastModified: {replica 16
>>>>>>>>>> ldap://host-in-question.our.personal.domain:389} 00000000
>>>>>>>>>> nsruvReplicaLastModified: {replica 15
>>>>>>>>>> ldap://host-in-question.our.personal.domain:389} 00000000
>>>>>>>>>> nsruvReplicaLastModified: {replica 14
>>>>>>>>>> ldap://host-in-question.our.personal.domain:389} 00000000
>>>>>>>>>> nsruvReplicaLastModified: {replica 13
>>>>>>>>>> ldap://host-in-question.our.personal.domain:389} 00000000
>>>>>>>>>> nsruvReplicaLastModified: {replica 12
>>>>>>>>>> ldap://host-in-question.our.personal.domain:389} 00000000
>>>>>>>>>> nsruvReplicaLastModified: {replica 23
>>>>>>>>>> ldap://host-in-question.our.personal.domain:389} 00000000
>>>>>>>>>>
>>>>>>>>>> dn:
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>> nsuniqueid=c08a2803-5b5a11e2-a527ce8b-8fa47d35,cn=host-in-question.our.personal.domain,cn=maste
>>>>>>>>>>
>>>>>>>>>>      rs,cn=ipa,cn=etc,dc=our,dc=personal,dc=domain
>>>>>>>>>> objectClass: top
>>>>>>>>>> objectClass: nsContainer
>>>>>>>>>> objectClass: nsTombstone
>>>>>>>>>> cn: host-in-question.our.personal.domain
>>>>>>>>>> nsParentUniqueId: e6fa9418-5b5711e2-a1a9825b-daf5b5b0
>>>>>>>>>>
>>>>>>>>>> dn:
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>> nsuniqueid=664c4383-6d6311e2-8db6e946-de27dd8d,cn=host-in-question.our.personal.domain,cn=maste
>>>>>>>>>>
>>>>>>>>>>      rs,cn=ipa,cn=etc,dc=our,dc=personal,dc=domain
>>>>>>>>>> objectClass: top
>>>>>>>>>> objectClass: nsContainer
>>>>>>>>>> objectClass: nsTombstone
>>>>>>>>>> cn: host-in-question.our.personal.domain
>>>>>>>>>> nsParentUniqueId: e6fa9418-5b5711e2-a1a9825b-daf5b5b0
>>>>>>>>>>
>>>>>>>>>> As you can see, the "host-in-question" has many RUV's and of which
>>>>>>>>>> two
>>>>>>>>>> appear to be "active" and two entries which I believe (pardon my
>>>>>>>>>> ignorance) possibly correlate with the "active" entries of the
>>>>>>>>>> "host-in-question".
>>>>>>>>>>
>>>>>>>>>> Do these two tombstone entries need to be deleted with ldapdelete
>>>>>>>>>> before we can re-provision "host-in-question" and add it back as a
>>>>>>>>>> replica?
>>>>>>>
>>>>>>> No, you cannot delete tombstones manually.  They will be cleaned up
>>>>>>> at some
>>>>>>> point by the dirsrv tombstone reap thread, and they should not be
>>>>>>> interfering with anything.
>>>>>>>
>>>>>>> What is the real problem you have?  Did replication stop working? Are
>>>>>>> you
>>>>>>> getting error messages?
>>>>>>>
>>>>>>>>>> Thank you,
>>>>>>>>>> John DeSantis
>>>>>>>>>>
>>>>>>>>> --
>>>>>>>>> Manage your subscription for the Freeipa-users mailing list:
>>>>>>>>> https://www.redhat.com/mailman/listinfo/freeipa-users
>>>>>>>>> Go To http://freeipa.org for more info on the project
>>>>>>>
>>>>>>> --
>>>>>>> Manage your subscription for the Freeipa-users mailing list:
>>>>>>> https://www.redhat.com/mailman/listinfo/freeipa-users
>>>>>>> Go To http://freeipa.org for more info on the project
>
>

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