Two-Node Cluster With Two Applications

You can configure two applications on a two-node cluster such that each physical host (phys-schost-1, phys-schost-2) acts as the default master for one application. Each physical host acts as the backup node for the other physical host. All applications must be represented in the Solaris Resource Manager limits database files on both nodes. When the cluster is running normally, each application is running on its default master, where it is allocated all CPU resources by Solaris Resource Manager.

After a failover or switchover occurs, both applications run on a single node where they are allocated shares as specified in the configuration file. For example, this configuration file specifies that Application 1 is allocated 80 shares and Application 2 is allocated 20 shares.

# limadm set cpu.shares=80 App-1 
# limadm set cpu.shares=20 App-2 
...

The following diagram illustrates the normal and failover operations of this configuration. Note that although the number of shares assigned does not change, the percentage of CPU resources available to each application can change, depending on the number of shares assigned to each process demanding CPU time.