On Feb 20, 2008 8:09 PM, Damon Estep <[EMAIL PROTECTED]> wrote:
> I am trying to;
>
>
>
> Run mysql on a two node cluster (active/active) with circular
> replication enabled <- I have already set this setup
>
>
>
> Run two virtual IPs, one on each node when both nodes are healthy and
> mysql is running <- also apready running
>
>
>
> Move the IP from the failed node to the good node if the node fails
> (easy enough) or if mysql fails <- my challenge
>
>
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> How can I create a constraint that says;
>
>
>
> Run this ip resource on this node if mysql is running, but move it to
> the other node if it is not?  So that the IP prefers one node only if my
> sql is running ,but will gotohe other node if it is not.

I did a similar setup some times ago but I solved it by using two
mysql lsb scripts ... one for each instance:

* on node1 "mysql_01" was responsible for starting the first mysql
instance and "mysql_02" was only a dummy
* on node2 "mysql_02" was responsible for starting the second mysql
instance and "mysql_01" was only a dummy

So only two simple groups and two location constrainst were needed.

Regards,
Andreas

>
>
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> I am currently using the lsb RA to monitor both instances of mysql (on
> resource on each node)
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>
>
> Does the ofc RA support active active mysql and is there a way to move
> the Ip as desired?
>
>
>
> Thanks
>
>
>
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