machineconfig-multipath

01-machineconfiguration.yaml

# This only went GA for OpenShift in 4.17
# 
# https://docs.openshift.com/container-platform/4.17/machine_configuration/machine-config-node-disruption.html
apiVersion: operator.openshift.io/v1
kind: MachineConfiguration
metadata:
  name: cluster
  namespace: openshift-machine-config-operator
spec:
  nodeDisruptionPolicy:
    files:
    - path: /etc/multipath.conf
      actions:
      - type: Restart
        restart:
          serviceName: multipathd.service

    units:
    - name: multipathd.service
      actions:
      - type: Restart
        restart: 
          serviceName: multipathd.service
    - name: iscsid.service
      actions:
      - type: Restart
        restart: 
          serviceName: iscsid.service

machineconfig-no-find-multipaths.yaml

# /etc/multipath.conf:
# defaults {
#         user_friendly_names yes
#         find_multipaths no
# }
apiVersion: machineconfiguration.openshift.io/v1
kind: MachineConfig
metadata:
  labels:
    machineconfiguration.openshift.io/role: worker
  name: worker-enable-multipathing
spec:
  config:
    ignition: 
      version: 3.2.0
    storage:
      files:
      - contents:
          source: data:text/plain;charset=utf-8;base64,ZGVmYXVsdHMgewogICAgICAgIHVzZXJfZnJpZW5kbHlfbmFtZXMgeWVzCiAgICAgICAgZmluZF9tdWx0aXBhdGhzIG5vCn0K
        path: /etc/multipath.conf
    systemd:
      units:
      - name: multipathd.service
        enabled: true

machineconfig.yaml

# /etc/multipath.conf:
# defaults {
#         user_friendly_names yes
#         find_multipaths yes
# }
apiVersion: machineconfiguration.openshift.io/v1
kind: MachineConfig
metadata:
  labels:
    machineconfiguration.openshift.io/role: worker
  name: worker-enable-multipathing
spec:
  config:
    ignition: 
      version: 3.2.0
    storage:
      files:
      - contents:
          source: data:text/plain;charset=utf-8;base64,ZGVmYXVsdHMgewogICAgICAgIHVzZXJfZnJpZW5kbHlfbmFtZXMgeWVzCiAgICAgICAgZmluZF9tdWx0aXBhdGhzIHllcwp9Cg==
        path: /etc/multipath.conf
    systemd:
      units:
      - name: multipathd.service
        enabled: true
      - name: iscsid.service
        enabled: true