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

[Tamas Papp]

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*?



Thanks,
tamas
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