Collecting and storing Kubernetes events

kind: Template
apiVersion: v1
metadata:
  name: eventrouter-template
  annotations:
    description: "A pod forwarding kubernetes events to cluster logging stack."
    tags: "events,EFK,logging,cluster-logging"
objects:
  - kind: ServiceAccount (1)
    apiVersion: v1
    metadata:
      name: eventrouter
      namespace: ${NAMESPACE}
  - kind: ClusterRole (2)
    apiVersion: v1
    metadata:
      name: event-reader
    rules:
    - apiGroups: [""]
      resources: ["events"]
      verbs: ["get", "watch", "list"]
  - kind: ClusterRoleBinding  (3)
    apiVersion: v1
    metadata:
      name: event-reader-binding
    subjects:
    - kind: ServiceAccount
      name: eventrouter
      namespace: ${NAMESPACE}
    roleRef:
      kind: ClusterRole
      name: event-reader
  - kind: ConfigMap (4)
    apiVersion: v1
    metadata:
      name: eventrouter
      namespace: ${NAMESPACE}
    data:
      config.json: |-
        {
          "sink": "stdout"
        }
  - kind: deployment (5)
    apiVersion: apps/v1
    metadata:
      name: eventrouter
      namespace: ${NAMESPACE}
      labels:
        component: "eventrouter"
        logging-infra: "eventrouter"
        provider: "openshift"
    spec:
      selector:
        matchLabels:
          component: "eventrouter"
          logging-infra: "eventrouter"
          provider: "openshift"
      replicas: 1
      template:
        metadata:
          labels:
            component: "eventrouter"
            logging-infra: "eventrouter"
            provider: "openshift"
          name: eventrouter
        spec:
          serviceAccount: eventrouter
          containers:
            - name: kube-eventrouter
              image: ${IMAGE}
              imagePullPolicy: IfNotPresent
              resources:
                requests:
                  cpu: ${CPU}
                  memory: ${MEMORY}
              volumeMounts:
              - name: config-volume
                mountPath: /etc/eventrouter
          volumes:
            - name: config-volume
              configMap:
                name: eventrouter
parameters:
  - name: IMAGE
    displayName: Image
    value: "registry.redhat.io/openshift4/ose-logging-eventrouter:latest"
  - name: CPU  (6)
    displayName: CPU
    value: "100m"
  - name: MEMORY (7)
    displayName: Memory
    value: "128Mi"
  - name: NAMESPACE
    displayName: Namespace
    value: "openshift-logging" (8)

$ oc process -f <templatefile> | oc apply -n openshift-logging -f -

$ oc process -f eventrouter.yaml | oc apply -n openshift-logging -f -

serviceaccount/logging-eventrouter created
clusterrole.authorization.openshift.io/event-reader created
clusterrolebinding.authorization.openshift.io/event-reader-binding created
configmap/logging-eventrouter created
deployment.apps/logging-eventrouter created