Zone Cluster Resource Group Affinities

The cluster administrator can specify affinities between a resource group in a zone cluster and another resource group in a zone cluster or a resource group on the global cluster.

You can use the following command to specify the affinity between resource groups in zone clusters.

# clresourcegroup set -p RG_affinities=affinity-typetarget-zc:target-rg source-zc:source-rg

The resource group affinity types in a zone cluster can be one of the following:

• + (weak positive)

• ++ (strong positive)

• +++ (strong positive with failover delegation)

• - (weak negative)

• -- (strong negative)

Example 2-54  Specifying a Strong Positive Affinity Between Resource Groups in Zone Clusters

This example shows the command for specifying a strong positive affinity between resource groups in zone clusters.

The resource group RG1 in a zone cluster ZC1 declares a strong positive affinity for a resource group RG2 in a zone cluster ZC2.

If you need to specify a strong positive affinity between a resource group RG1 in a zone cluster ZC1 and a resource group RG2 in another zone cluster ZC2, use the following command:

# clresourcegroup set -p RG_affinities=++ZC2:RG2 ZC1:RG1

Example 2-55  Specifying a Strong Negative Affinity Between a Resource Group in a Zone Cluster and a Resource Group in the Global Cluster

This example shows the command for specifying a strong negative affinity between resource groups in zone clusters. If you need to specify a strong negative affinity between a resource group RG1 in a zone cluster ZC1 and a resource group RG2 in the global cluster, use the following command:

# clresourcegroup set -p RG_affinities=--global:RG2 ZC1:RG1