MachineConfig template that applies Red Hat subscription information

50-worker-rhsm-entitlement-template.yaml

apiVersion: machineconfiguration.openshift.io/v1
kind: MachineConfig
metadata:
  labels:
    machineconfiguration.openshift.io/role: worker
  name: 50-worker-rhsm-entitlement
spec:
  config:
    ignition:
      version: 3.2.0
    storage:
      files:
        - path: /etc/rhsm/rhsm.conf
          mode: 0644
          contents:
            source: data:text/plain;charset=utf-8;base64,ENCODED_rhsm.conf
        - path: /etc/pki/entitlement/entitlement.pem
          mode: 0644
          contents:
            source: data:text/plain;charset=utf-8;base64,ENCODED_entitlement.pem
        - path: /etc/pki/entitlement/entitlement-key.pem
          mode: 0644
          contents:
            source: data:text/plain;charset=utf-8;base64,ENCODED_entitlement-key.pem

These steps assume the executing host has a RHEL8 entitlement applied. The long series of numbers in the .pem files need to be adjusted.

# cp 50-worker-rhsm-entitlement-template.yaml 50-worker-rhsm-entitlement.yaml
# sed -i "s/ENCODED_rhsm.conf/$(base64 -w0 /etc/rhsm/rhsm.conf)/" 50-worker-rhsm-entitlement.yaml
# sed -i "s/ENCODED_entitlement.pem/$(base64 -w0 /etc/pki/entitlement/4864804418326397803.pem)/" 50-worker-rhsm-entitlement.yaml
# sed -i "s/ENCODED_entitlement-key.pem/$(base64 -w0 /etc/pki/entitlement/4864804418326397803-key.pem)/" 50-worker-rhsm-entitlement.yaml
# oc create -f 50-worker-rhsm-entitlement.yaml

@kincl has improved this by fetching the entitlement content from the secrets created by the Insights Operator when Simple Content Access has been turned on.

Link: https://gist.github.com/kincl/7d720041d58f79a9725615c074a37d8c