[Linux-HA] Double node configuration with mixed ressource

[Andrew Beekhof]

On Dec 5, 2007, at 9:42 AM, Franck Ganachaud wrote:

> I try to be more explicit.
> I use v2 configuration
>
> I got 2 servers A and B. A set (group) of resource R1.
> R1 is running by default on server A and jump to server B in case of  
> trouble.
> This is currently setup and working fine.
>
> Now, i need to check mysql running on both server A and B.
>
> If mysql isn't ok on server running R1, I need to stop  
> whateverdaemond and move R1 to the other server
> If mysql isn't ok on server not running R1, I just need to stop  
> whateverdaemond.
>
> I made a OCF agent that does the "stop whateverdaemond if mysql is  
> down" job

dont do that
write a proper agent for whateverdaemond (maybe you can use an init- 
script instead)

add a clone resource for mysql
add a clone resource for whateverdaemond
colocate whateverdaemond with mysql
colocate R1 with mysql

>
> This where I get puzzled, how to translate the relation between the  
> "if running R1"  and the agent I wrote it in heartbeat groups and  
> constraints
>
> Hope it's clearer.
> Franck.
>
> Dejan Muhamedagic a écrit :
>> Hi,
>>
>> On Tue, Dec 04, 2007 at 05:25:08PM +0100, Franck Ganachaud wrote:
>>
>>> Hi,
>>>
>>> I have a two 2 node cluster.
>>> group1 is active/passive set of ressource.
>>> group1 is currently hop-ing  from one node to the other as  
>>> intended when one of the group ressource isn't available.
>>>
>>> Now I have a second task for heartbeat.
>>> On each node, I have a mysql server, if it goes wrong, I must  
>>> shutdown a service and migrate the group1 (if it runs on this  
>>> node) to the other node.
>>> And this something I don't know how to do.
>>>
>>> I was thinking about creating a group2 in an active/active  
>>> configuration testing mysql and if goes wrong just shutdown the  
>>> service in the stop process of the group2 but I don't know how to  
>>> force in this case the push of the group1 to the other node of  
>>> it's running on the group2 failing node.
>>>
>>
>> Sorry, but I can't follow. Can you please rephrase.
>>
>> Which configuration do you use: v1 or v2?
>>
>> Thanks,
>>
>> Dejan
>>
>>
>>> Any one can help me?
>>> Hope it's clear.
>>>
>>> Franck.
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>>>
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>>
>>
>
> -- 
> GANACHAUD Franck
> Consultant
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