Red Hat OpenShift Container Platform

Disable a machine autoscaler

To disable a machine autoscaler, you delete the corresponding MachineAutoscaler custom resource (CR).

Disabling a machine autoscaler does not disable the cluster autoscaler. To disable the cluster autoscaler, follow the instructions in "Disabling the cluster autoscaler".

Procedure

List the MachineAutoscaler CRs for the cluster by running the following command:

$ oc get MachineAutoscaler -n openshift-machine-api

Example output

NAME                 REF KIND     REF NAME             MIN   MAX   AGE
compute-us-east-1a   MachineSet   compute-us-east-1a   1     12    39m
compute-us-west-1a   MachineSet   compute-us-west-1a   2     4     37m

Optional: Create a YAML file backup of the MachineAutoscaler CR by running the following command:
```
$ oc get MachineAutoscaler/<machine_autoscaler_name> \
  -n openshift-machine-api \
  -o yaml> <machine_autoscaler_name_backup>.yaml
```
where:

<machine_autoscaler_name_backup>

Specifies the file name in which to store the backup.

Delete the MachineAutoscaler CR by running the following command:

$ oc delete MachineAutoscaler/<machine_autoscaler_name> -n openshift-machine-api

Example output

machineautoscaler.autoscaling.openshift.io "compute-us-east-1a" deleted

Verification

To verify that the machine autoscaler is disabled, run the following command:
```
$ oc get MachineAutoscaler -n openshift-machine-api
```
The disabled machine autoscaler does not appear in the list of machine autoscalers.

Next steps

If you need to re-enable the machine autoscaler, use the <machine_autoscaler_name_backup>.yaml backup file and follow the instructions in "Deploying a machine autoscaler".