[Freeipa-users] Sudden replication failure

[thierry bordaz]

On 08/18/2015 08:39 PM, Martin Kosek wrote:
> On 08/10/2015 10:05 PM, Burke Rosen wrote:
>> Hello,
>>
>> I'm running two replicated freeIPA servers. One of them spontaneously 
>> failed.
>> After taking the misbehaving server down, the remaining replicant 
>> handled
>> everything fine. I restored the system to its original working state by
>> uninstalling ipa-server from the non-functional server and 
>> re-replicating from
>> the working server. All is well, but I am trying to figure out what 
>> might have
>> caused the problem in the first place. Below are first few (presumably)
>> relevant lines of the the error log. Can someone help me interpret them?
>>
>> Thank you,
>>
>> -Burke Rosen
>>
>>
>
> This line is interesting:
>
>> [08/Aug/2015:04:11:06 -0700] repl_version_plugin_recv_acquire_cb - [file
>> ipa_repl_version.c, line 119]: Incompatible IPA versions, pausing 
>> replication.
>> This server: "20100614120000" remote server: "(null)".
>
> But I wonder how it is possible this was triggered, we did not bump 
> the data version in IPA Replica version plugin since 2010 as you can 
> see. So for some reason, it seems that the version was not passed 
> correctly when the connection between replicas was being established.
>
> I guess we will not find out the root cause, given you successfully 
> rebuilt the server. I am still CCing Ludwig and Thierry for reference.
>

Hello,

The DS master (or replica) sent a start-replication session with an 
empty GUID payload (added by ipa plugin). It should happen if you mixed 
DS and/or IPA version, is it the case ?

thanks
thierry
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