[Bucardo-general] Simple question regarding master-master

[Mitchell Perilstein]

We're running differently from Rosser's one-bucardo suggestion--which 
does make sense.  We're dual master but we need both boxes to be as 
identical as possible partly because the process has to be repeatable on 
many pairs and also because we bounce our apps on occasion but want the 
DBs to stay in sync.  So we have bucardo on each box, with each local 
bucardo writing to its remote peer.  So it's a criss-cross arrangement.

For our purpose, at least, this also gets us a little bit of HA: even if 
our application layer and bucardo are down on one box, as long as its 
database is running, the fully-up peer box will continue writing its 
changes to the partly down box.

I'm not saying our approach is correct, but it's working for us.


On 06/14/2013 07:17 AM, Rosser Schwarz wrote:
> Bucardo only needs to be installed on one host, although obviously, that
> won't provide HA capability. Typically, in a master-master scenario, it's
> installed on one of the masters. In the event either of the masters then
> goes down, the Bucardo daemon wouldn't have anything to do anyway, so HA
> for it is pretty moot.
>
>
> On Fri, Jun 14, 2013 at 3:44 AM, Athanasios Kostopoulos <
> athanasios.kostopoulos at classmarkets.com> wrote:
>
>> In continuation to my previous email?
>> For example the following approach might be effective:
>> - install bucardo on master1
>> - setup replication as follows: master1: master - master2: slave
>> - verify that replication works
>> If the above are correct then:
>> - install bucardo on master2
>> - setup replication as follows: master2: master - master1: slave
>> - verify replication works
>> Will the previous be enough or I am missing a fundamental piece here
>> (perhaps not needing to run bucardo on two different hosts and use one
>> setup (say on master one) and two replication streams. How will this handle
>> failover?
>>
>>
>> On Thu, Jun 13, 2013 at 5:43 PM, Athanasios Kostopoulos <
>> athanasios.kostopoulos at classmarkets.com> wrote:
>>
>>> Dear all,
>>> first of all, thanks for the hard work that has been put into bucardo. I
>>> am a novice and I have the following perhaps trivial question:
>>> when wanting to create a master-master setup, do I need to install
>>> bucardo (e.g. bucardo install) on both of the masters? I am on Debian 7
>>> wheezy with bucardo 4.99.7, installed from the Debian repositories. Thanks
>>> in advance for any answers to my perhaps trivial question.
>>>
>>
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>
>
>
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