[Freeipa-users] ui login error and questions about replication

[Rich Megginson]

On 11/06/2013 06:41 AM, Tamas Papp wrote:
>
> On 11/06/2013 04:16 AM, Rob Crittenden wrote:
>>
>>>
>>>>>
>>>>>> 5. If I have a network like this:
>>>>>>
>>>>>> A1______B1
>>>>>> A2          B2
>>>>>>
>>>>>> A2 and B1,2 are replicated from A1
>>>>>>
>>>>>> If the connection gets lost between A and B site, are B1 and 2 (and
>>>>>> A1,2) replicated fine?
>>>>> I assume from the above that B1 does not know about B2 (and vice 
>>>>> versa)?
>>>
>>> Well, that is actually one of the questions. B1 and B2 are on the same
>>> sites and failover nodes from point of view of clients.
>>
>> You can manage the replication topology with ipa-replica-manage 
>> connect and disconnect.  So if you want B1 and B2 connected you can 
>> do that.
>>
>>>
>>>>> Once connectivity between sites A and B restored, all unreplicated 
>>>>> data
>>>>> will be replicated. There could be conflicts if there were changes on
>>>>> both sides during the split but majority of them are solved
>>>>> automatically by 389-ds.
>>>
>>> The main question is that B1 and B2 are not replicated to each other
>>> automatically? What about the case if
>>>
>>> A1 -- replication -- A2 --- replication --- B1 -- replication -- B2
>>>
>>> If B1 gets destroyed, how B2 and A2 (and A1) gets synchronized?
>>> Especially automatically...?
>>> Is there such a failover configuration?
>>
>> No, the masters only replicate to the ones you tell them to, so if B1 
>> went away forever then B2 would never get any other updates unless 
>> you explicitly made a connection to A1 or A2.
>
> Can the replication agreement be circular?
>
> *A2*-A1-B1-B2-*A**2*?

Yes.

>
>
>
> Thanks,
> tamas

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