[Linux-HA] Additional Nodes configuration
beekhof at gmail.com
Sat Oct 6 04:08:17 MDT 2007
On 10/5/07, Michael Schwartzkopff <misch at multinet.de> wrote:
> I think about the following problem:
> If I design a cluster to work with two nodes I configure these two nodes in
> the ha.cf file. The cluster runs fine. Now I want to add an additional node
> to the cluster. How can I do this with at least downtime as possible?
> I thought following methods could be possible:
> 1) Configure "autojoin" from the beginning.
this is the best option
> 2) Is it possible to add nodes with cib_admin? I don't know...
no, that section is populated from heartbeat (not the other way around)
> 3) - Configure the new node with three nodes in the ha.cf, start heartbeat
> - stop the second node, configure three nodes in ha.cf and restart heartbeat,
> - finally do this with the last node
you'd have to shutdown^ all the nodes and update ha.cf
only then should you bring the 3rd node online
^ you can at least put the resources into unmanaged mode so they'll
stay running while you do this
> 4) Is there any other possibility?
> Thanks for any enlightening answers.
> Dr. Michael Schwartzkopff
> MultiNET Services GmbH
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