[Freeipa-users] What to do next???: IPA replica host entry is removed on web UI by mistake

David Copperfield cao2dan at yahoo.com
Wed May 16 20:23:00 UTC 2012 

Hi JR,

Thanks a lot! It works perfectly.

The only extra thing probably goes with 2.1.3 only: I need to find and clear ghost RUV records for CA database, and remove it from master and all other live replicas as well. 

BTW, on 2.2.0 the two database backends still are separate, or merged into one?

Thanks.

--David


________________________________
 From: JR Aquino <JR.Aquino at citrix.com>
To: David Copperfield <cao2dan at yahoo.com> 
Cc: FreeIPAUsers <freeipa-users at redhat.com> 
Sent: Wednesday, May 16, 2012 12:57 PM
Subject: Re: [Freeipa-users] What to do next???: IPA replica host entry is removed on web UI by mistake
 
On May 16, 2012, at 12:23 PM, David Copperfield wrote:

> Hi all,
> 
>  I accidentally removed one of my IPA replica host on IPA web UI by mistake, on the host list I planed to remove ipaclient02.example.com, but accidentally the mouse moved to ipareplica02.example.com and the latter got removed without a prompt.
> 
> I realized the mistake and tried to recover from this disaster but it was already too late, the change propagated to all the replicas and the poor ipareplica02 now stops functioning.
> 
> [root at ipareplica02 slapd-EXAMPLE-COM]# ipa service-find
> ipa: ERROR: cannot connect to u'https://ipareplica02.qe9.jigsaw.com/ipa/xml': Internal Server Error
> [root at ipareplica02 slapd-EXAMPLE-COM]# ipa user-find
> ipa: ERROR: cannot connect to u'https://ipareplica02.qe9.jigsaw.com/ipa/xml': Internal Server Error
> [root at ipareplica02 slapd-EXAMPLE-COM]# ipa host-find
> ipa: ERROR: cannot connect to u'https://ipareplica02.qe9.jigsaw.com/ipa/xml': Internal Server Error
> [root at ipareplica02 slapd-EXAMPLE-COM]# 
> 
> On the IPA master, It was found that ipareplica02 didn't show up in 'host-find' list or 'service-find' list. Though it still showed in the master list reported by 'ipa-replica-manage' and 'ipa-csreplica-manage', the real command 'ipa-replica-manage list ipareplica02' fails with LDAP could't reach error.
> 
> What should I do now? Is there are any other ways to recover besides uninstall and reinstall of IPA replica ipareplica02?
> 
>  BTW, it will be more than appreciated if the web UI could pop up a warning prompt when removing host/services entries associated with IPA masters and IPA replicas. 

Been there... Done that... The bug is fixed in 2.2... It will prompt and prevent you from deleting a replica host if there is an agreement.

To clean up...

0. On the master replica: ipa-replica-manage del ipareplica02.example.com --force
-This will delete the replica agreement for the host.

1. $ ldapsearch -xLLL -D "cn=directory manager" -W -b dc=example,dc=com \
'(&(nsuniqueid=ffffffff-ffffffff-ffffffff-ffffffff)(objectclass=nstombstone))'

Look for your your nsds50ruv that matches your ghost replica.

2. Create an ldif following the directions here: http://directory.fedoraproject.org/wiki/Howto:CLEANRUV
Something like:

$ cat cleanup.ldif
dn: cn=replica,cn=dc\3Dexample\2Cdc\3Dcom,cn=mapping tree,cn=config
changetype: modify
replace: nsds5task
nsds5task: CLEANRUV## <- ## == The ReplicaID number for the ghost replica.

3. Run on all of the remaining replicas: ldapmodify -x -D "cn=directory manager" -W -f fixed.ldif
- This removes the ghost entry.

4. on the broken replica: ipa-server-install --uninstall

5. Follow the normal directions for 'installing a replica'
- on master: ipa-replica-prepare ipareplica02.example.com
- scp /path/to/ipareplica02.example.com.gpg  ipareplica02.example.com: ipareplica02.example.com.gpg
- on replica: ipa-replica-install  ipareplica02.example.com --whatever_options_you_used_previously

6. Check to make sure the server was built correctly and command work as expected: kinit admin, ipa user-find, ipa host-find, id admin, etc etc

7. Sigh and drink coffee

> Thanks.
> 
> --David
> From: Rich Megginson <rmeggins at redhat.com>
> To: Ben Ho <ben13ho at hotmail.com> 
> Cc: freeipa-users at redhat.com 
> Sent: Tuesday, May 15, 2012 5:33 PM
> Subject: Re: [Freeipa-users] Help with ipa-replica-manage
> 
> On 05/15/2012 02:49 PM, Ben Ho wrote:
>> This is the information I retrieved about my server.
>> 
>> ipa-server-selinux-2.1.3-9.el6.x86_64
>> ipa-client-2.1.3-9.el6.x86_64
>> ipa-server-2.1.3-9.el6.x86_64
>> CentOS release 6.2
>> 389-ds-base-1.2.9.14-1.el6_2.2.x86_64
>> 
>> Thanks again.
> 
> Is replication otherwise working?
> 
>> 
>> -Ben
>> 
>> Date: Tue, 15 May 2012 13:15:46 -0600
>> From: rmeggins at redhat.com
>> To: ben13ho at hotmail.com
>> CC: freeipa-users at redhat.com
>> Subject: Re: [Freeipa-users] Help with ipa-replica-manage
>> 
>> On 05/15/2012 01:00 PM, Ben Ho wrote:
>> Hello,
>>   I am pretty new to IPA.  Right now I have three servers that are running IPA.  I am trying to replicate one server to two other servers.  I use this command:
>> 
>> ipa-replica-manage re-initialize --from example2.edu
>> 
>>   On the first server I need to replicate, it works fine.  However, on the second server I get this message in my log files.  The errors get printed out once every 1 to 5 minutes.
>> 
>> [15/May/2012:14:22:43 -0400] NSMMReplicationPlugin - agmt="cn=meToexample1.edu" (example1:389): Schema replication update failed: Type or value exists
>> [15/May/2012:14:22:43 -0400] NSMMReplicationPlugin - agmt="cn=meToexample1.edu" (example1:389): Warning: unable to replicate schema: rc=1
>> [15/May/2012:14:22:47 -0400] NSMMReplicationPlugin - agmt="cn=meToexample2.edu" (example2:389): Schema replication update failed: Type or value exists
>> [15/May/2012:14:22:47 -0400] NSMMReplicationPlugin - agmt="cn=meToexample2.edu" (example2:389): Warning: unable to replicate schema: rc=1
>> 
>> 
>>   Again, I am pretty new to this, so any help or tips would be appreciated.
>> 
>> What platform and what version of 389-ds-base and ipa-server for all of your servers?
>> 
>> 
>>   Thanks!
>> 
>> -Ben
>> 
>> 
>> 
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>> 
>> Freeipa-users at redhat.com
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>> 
> 
> 
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