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Re: [Linux-cluster] Cluster v2 online adding nodes?



On 26/04/10 00:33, Jeff Sturm wrote:
-----Original Message-----
Can I add or remove a node from cluster by just adding/removing it
from
cluster.conf? Is that kind of cluster reconfiguration supported
without
reboots?

Provided your cluster has more than 2 nodes, this should work fine.  (I
believe two node clusters are special.)

Make sure you bump the version number of cluster.conf after any change.
We also run "ccs_tool update" afterwards to propagate the new config to
other nodes before starting cman on the new node.  If removing a node,
we stop it before removing from the config file.


Yes, you must stop a node before removing it from cluster.conf. Also be aware that removing a node from cluster.conf will not remove it from the "cman_tool" display unless you are running cluster3.

Chrissie


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