[Linux-HA] Recovery after a failure

[Adrian Chapela]

Hello,

I'm testing Heartbeat 2 to make a MySQL master/slave system to takeover 
a failure. Now I can test a service, test the network connectivity, etc 
and all runs OK.

At this moment, I want the next thing:

Server A execute MySQL resource and IPADDR (the VIP shared address)
Server B execute MySQL in slave mode

When a failure happens in the server A (lost network connectivity, 
resource MySQL is lost...) the VIP and the MySQL resource must be moved 
to the server B, then if Server A goes up the resource can't go again to 
the server A ( I don't want it goes). I want to supervise this action 
and I will make it manually.

My problem is to write a rule and to execute the resource in the two 
nodes. I execute resources in two nodes as a clone statement. This is my 
config for the resource:

 <clone id="mysqld">
      <primitive id="mysqld-child" provider="heartbeat" class="lsb" 
type="mysql">
         <operations>
           <op id="mysqld-child-monitor" name="monitor" interval="20s" 
timeout="40s" prereq="nothing"/>
           <op id="mysqld-child-start" name="start" prereq="nothing"/>
         </operations>
       </primitive>
 </clone>
(This is an example.. and could change in the future...)

And my second problem is How can I write a rule to don't run a resource 
in a recovery node, even if it's "master" node ??

Best regards...