On Clusters

[arkie]

Hi,

I am new to clusters.

There is an already configured 2-node cluster running. Pls guide me on how to determine whether it is an active-passive or an active-active cluster

[Martin Smoral]

What is the OS ? What is the Cluster Application ?

[arkie]

Hi MartinS,

OS is HP-UX 11iv1 and Serviceguard is version A.11.16.00

[Torsten.]

What is your understanding of active-passive or active-active?

With serviceguard you have 2 or more nodes, each can run several packages. In case of failure, the packages can move to a different node. Other applications may work differently, e.g. RAC. What do you run?

[Mustafa Gulercan]

At cluster packages you can configure vg's exclusive mode and shared mode.
At shared mode your cluster nodes can read/write the disks at the same time.
At exclusive mode, one node can read/write at the same time, the others have got just read permissions.

You may think first one is active-active, second one is active passive.