How to enable hyperthreading in Openshift after installation

Solution Verified - Updated -

Issue

  • Hyperthreading is disabled during Openshift installation, how to enable hyperthreading in Openshift after installation?
$ cat install-config.yaml
apiVersion: v1
baseDomain: example.com 
compute:
- hyperthreading: Disabled
  name: worker
  replicas: 0    
controlPlane:
  hyperthreading: Disabled
  name: master 
  replicas: 3

$ oc get mc
99-master-disable-hyperthreading    3.1.0             10h
99-worker-disable-hyperthreading    3.1.0             10h

[core@worker02 ~]# cat /proc/cmdline
BOOT_IMAGE=(hd0,gpt1)/ostree/rhcos-8531b9a3611a5ad880a2479e1cf8b720a1a72d49e05aad05ca15fa8ac553353d/vmlinuz-4.18.0-193.29.1.el8_2.x86_64 rhcos.root=crypt_rootfs random.trust_cpu=on console=tty0 console=ttyS0,115200n8 ignition.platform.id=metal rd.luks.options=discard ostree=/ostree/boot.0/rhcos/8531b9a3611a5ad880a2479e1cf8b720a1a72d49e05aad05ca15fa8ac553353d/0 nosmt

Environment

  • OpenShift Container Platform 4.6
  • OpenShift Container Platform 4.10

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