[Linux-cluster] CLVM & CMAN live adding nodes
Fabio M. Di Nitto
fdinitto at redhat.com
Sat Feb 22 13:54:53 UTC 2014
On 02/22/2014 10:33 AM, emmanuel segura wrote:
> I know if you need to modify anything outside <rm>... </rm>{used by
> rgmanager} tag in the cluster.conf file, you need to restart the whole
> cluster stack, with cman+rgmanager i have never seen how to add a node
> and remove a node from cluster without restart cman.
It depends on the version. RHEL5 that's correct, RHEL6 it works also for
outside of <rm> but there are some limitations as some parameters just
can't be changed runtime.
Fabio
>
>
>
>
> 2014-02-22 6:21 GMT+01:00 Bjoern Teipel
> <bjoern.teipel at internetbrands.com
> <mailto:bjoern.teipel at internetbrands.com>>:
>
> Hi all,
>
> who's using CLVM with CMAN in a cluster with more than 2 nodes in
> production ?
> Did you guys got it to manage to live add a new node to the cluster
> while everything is running ?
> I'm only able to add nodes while the cluster stack is shutdown.
> That's certainly not a good idea when you have to run CLVM on
> hypervisors and you need to shutdown all VMs to add a new box.
> Would be also good if you paste some of your configs using IPMI fencing
>
> Thanks in advance,
> Bjoern
>
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