10.2.

variant: openshift
version: 4.16.0
metadata:
  name: 40-worker-custom-journald
  labels:
    machineconfiguration.openshift.io/role: "worker"
storage:
  files:
  - path: /etc/systemd/journald.conf
    mode: 0644 

    overwrite: true
    contents:
      inline: |
        Compress=yes 

        ForwardToConsole=no 

        ForwardToSyslog=no
        MaxRetentionSec=1month 

        RateLimitBurst=10000 

        RateLimitIntervalSec=30s
        Storage=persistent 

        SyncIntervalSec=1s 

        SystemMaxUse=8G 

        SystemKeepFree=20% 

        SystemMaxFileSize=10M 

$ butane 40-worker-custom-journald.bu -o 40-worker-custom-journald.yaml

$ oc apply -f 40-worker-custom-journald.yaml

$ oc describe machineconfigpool/worker