[Pacemaker] nodes in different network

Andrew Beekhof andrew at beekhof.net
Thu Feb 4 02:58:14 EST 2010


On Wed, Feb 3, 2010 at 4:34 PM, Herbert Monteiro <hmsouza at gmail.com> wrote:
> Thanks Andrew,
>
>> becuse long distance network fails could happen more often that local
>> network, especially if you use tunnelling
>
> Ok! But it is the scenario. To me the servers in different networks
> are good. Of course, the LAN is less error, but in different LAN if
> the LAN link is down in the other LAN the link could be up. In my
> scenario the server doesn't reply data, it only verifies if the other
> is up or down to run the services.

Which is very hard to do when the network between them is down.

You'll want to read up on split-brain scenarios.
Particularly think about how you'll make sure that the other side has
released the services before you start them locally.




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