One node in two clusters possible?

[Steve Bonds]

Here's a silly question: Can I have the same node in two different clusters?

Suppose I have a standby node in a production cluster which I'd like to also use as the standby node in a development cluster. Is there anything special that needs to be done to set this up? (Clearly the cluster names would need to be different.)

Anyone tried this? Any unusual pitfalls to watch out for?

[Sridhar Bhaskarla · Accepted solution]

As far as I know, it is not possible to have a node in two clusters. This is because of the binary file cmclconfig under /etc/cmcluster directory. Everytime you try to configure anything in one cluster, it is going to overwrite this file taking it out of another cluster.

Pitfalls come later.

-Sri

[linuxfan]

Hi Steve,

No, you cannot configure the same node in two clusters.

To setup your configuration, You will have to configure all the 3 nodes in the same cluster, but with the development pkg running on primary node1(node1) and the production pks running on primary node2(node2) and node3 will be a standby for all the packages.

-Regards
Ramesh

[melvyn burnard]

You cannot do this at all!

a node can belong to one cluster only.

[Steve Bonds]

I suspected as much, but figured it couldn't hurt to ask. Thanks for the quick replies!