Red Hat OpenShift Container Platform

Add more compute machines to a cluster in vSphere

To scale a user-provisioned Red Hat OpenShift Container Platform cluster on VMware vSphere, you can add more compute machines by cloning the vSphere template into a virtual machine (VM).

Prerequisites

Obtain the base64-encoded Ignition file for your compute machines.
You have access to the vSphere template that you created for your cluster.

Procedure

Right-click the template’s name and click Clone → Clone to Virtual Machine.
On the Select a name and folder tab, specify a name for the VM. You might include the machine type in the name, such as compute-1.

Ensure that all virtual machine names across a vSphere installation are unique.
On the Select a name and folder tab, select the name of the folder that you created for the cluster.
On the Select a compute resource tab, select the name of a host in your data center.
On the Select storage tab, select storage for your configuration and disk files.
On the Select clone options tab, select Customize this virtual machine’s hardware.
On the Customize hardware tab, click Advanced Parameters.
- Add the following configuration parameter names and values by specifying data in the Attribute and Values fields. Ensure that you select the Add button for each parameter that you create.
  - guestinfo.ignition.config.data: Paste the contents of the base64-encoded compute Ignition config file for this machine type.
  - guestinfo.ignition.config.data.encoding: Specify base64.
  - disk.EnableUUID: Specify TRUE.
In the Virtual Hardware panel of the Customize hardware tab, modify the specified values as required. Ensure that the amount of RAM, CPU, and disk storage meets the minimum requirements for the machine type. If many networks exist, select Add New Device > Network Adapter, and then enter your network information in the fields provided by the New Network menu item.
Complete the remaining configuration steps. On clicking the Finish button, you have completed the cloning operation.
From the Virtual Machines tab, right-click on your VM and then select Power → Power On.

Next steps

Continue to create more compute machines for your cluster.