js-after.yaml

 nats:
    image: nats:2.4.0-alpine

    limits:
      maxConnections:
      maxSubscriptions:
      maxControlLine:
      maxPayload:
      writeDeadline:
      maxPending:
      maxPings:
      lameDuckDuration:

    terminationGracePeriodSeconds: 60

    logging:
      debug:
      trace:
      logtime:
      connectErrorReports:
      reconnectErrorReports:

    jetstream:
      enabled: true

      memStorage:
        enabled: true

      fileStorage:
        enabled: true
        storageDirectory: /data
        storageClassName: do-block-storage
        size: 5Gi
        accessModes:
          - ReadWriteOnce

 cluster:
   enabled: true
   replicas: 3
   noAdvertise: false

natsbox:
  enabled: false

exporter:
  enabled: true

js-before.yaml

nats:
    image: nats:2.3.4-alpine
    limits:
      maxConnections:
      maxSubscriptions:
      maxControlLine:
      maxPayload:
      writeDeadline:
      maxPending:
      maxPings:
      lameDuckDuration:

    terminationGracePeriodSeconds: 60

    logging:
      debug:
      trace:
      logtime:
      connectErrorReports:
      reconnectErrorReports:

    jetstream:
      enabled: true

      memStorage:
        enabled: true

      fileStorage:
        enabled: true
        storageDirectory: /data
        storageClassName: do-block-storage
        size: 5Gi
        accessModes:
          - ReadWriteOnce

 cluster:
   enabled: true
   replicas: 3
   noAdvertise: false

natsbox:
  enabled: false

exporter:
  enabled: true