[Linux-cluster] I give up

[James Chamberlain]

As with many things, I think the devil in that quote is in the details. 
Failover domains are not required for the cluster to run *at all*, but I 
think they may be required for the cluster to behave as you'd like.

For example, if I wanted to have multiple front-end nodes serving a GFS 
filesystem, with a load balancer out in front of the cluster to redirect 
requests, I wouldn't need a failover domain.  Every node would be mounting 
the GFS filesystem, so there wouldn't be a service I'd need to fail over to 
anywhere.  However, if I wanted to run a web server on one node and have it 
migrate to another node if the first one failed, then I would need a 
failover domain.

Regards,

James Chamberlain

On Thu, 29 Nov 2007, Scott Becker wrote:

> jr wrote:
>>  from my understanding a failover domain is required whenever you want
>>  other nodes to take over a service. the subset is if you make it
>>  restricted, isn't it?
>>  regards,
>>  johanne
> From:
> https://www.redhat.com/docs/manuals/enterprise/RHEL-5-manual/en-US/RHEL510/Cluster_Administration/s1-config-failover-domain-conga-CA.html
>
> "Failover domains are /not/ required for operation."
>
>   scottb
>
>