Creating a New ARO Cluster in the Same VNet and Resource Group (RG) while Preserving the Existing Cluster

Solution Verified - Updated -

Environment

  • Azure Red Hat OpenShift (ARO)
    • 4

Issue

  • Is it possible to create another ARO cluster using same VNet and Resource Group Preserving the initial cluster in its entirety.

Resolution

  • ARO cluster provides an option to create a new cluster on the same VNet and Resource Group, while keeping the existing cluster unaffected.
  • Ensure that you use distinct names for the cluster-name, master-subnet, and worker-subnet.
  • The VNet and Resource Group can remain the same.

  • ARO requires a virtual network with two empty subnets, for the master and worker node.

  • Create ARO cluster on same VNet and Resource Group, leaving existing cluster in place. Run below command:

$ az aro create \
  --resource-group $RESOURCEGROUP \
  --name $CLUSTER \                  <------------ Cluster name should be different
  --vnet aro-vnet \
  --master-subnet master-subnet \    <------------ Master subnet should be different
  --worker-subnet worker-subnet      <------------ Worker subnet should be different

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