apiVersion: extensions/v1beta1
kind: DaemonSet
metadata:
  name: fluentd-es
  namespace: kube-system
  labels:
    k8s-addon: logging-elasticsearch.addons.k8s.io
    k8s-app: fluentd-es
    kubernetes.io/cluster-service: "true"
    version: v1.22
spec:
  template:
    metadata:
      labels:
        k8s-app: fluentd-es
        kubernetes.io/cluster-service: "true"
        version: v1.22
    spec:
      containers:
      - name: fluentd-es
        image: k8s.gcr.io/fluentd-elasticsearch:1.22
        command:
          - '/bin/sh'
          - '-c'
          - '/usr/sbin/td-agent 2>&1 >> /var/log/fluentd.log'
        resources:
          limits:
            memory: 200Mi
          requests:
            cpu: 100m
            memory: 200Mi
        volumeMounts:
        - name: varlog
          mountPath: /var/log
        - name: varlibdockercontainers
          mountPath: /var/lib/docker/containers
          readOnly: true
      #nodeSelector:
      #  alpha.kubernetes.io/fluentd-ds-ready: "true"
      terminationGracePeriodSeconds: 30
      volumes:
      - name: varlog
        hostPath:
          path: /var/log
      - name: varlibdockercontainers
        hostPath:
          path: /var/lib/docker/containers

---

apiVersion: v1
kind: Service
metadata:
  name: elasticsearch-logging
  namespace: kube-system
  labels:
    k8s-addon: logging-elasticsearch.addons.k8s.io
    k8s-app: elasticsearch-logging
    kubernetes.io/cluster-service: "true"
    kubernetes.io/name: "Elasticsearch"
spec:
  ports:
  - port: 9200
    protocol: TCP
    targetPort: db
  selector:
    k8s-app: elasticsearch-logging

---

apiVersion: apps/v1beta1
kind: StatefulSet
metadata:
  name: elasticsearch-logging
  namespace: kube-system
  labels:
    k8s-addon: logging-elasticsearch.addons.k8s.io
    k8s-app: elasticsearch-logging
    version: v1
    kubernetes.io/cluster-service: "true"
spec:
  serviceName: elasticsearch-logging
  replicas: 2
  template:
    metadata:
      labels:
        k8s-app: elasticsearch-logging
        version: v1
        kubernetes.io/cluster-service: "true"
    spec:
      containers:
      - image: k8s.gcr.io/elasticsearch:v2.4.1-2
        name: elasticsearch-logging
        resources:
          # need more cpu upon initialization, therefore burstable class
          limits:
            cpu: 1000m
          requests:
            cpu: 100m
        ports:
        - containerPort: 9200
          name: db
          protocol: TCP
        - containerPort: 9300
          name: transport
          protocol: TCP
        volumeMounts:
        - name: es-persistent-storage
          mountPath: /data
        env:
        - name: "NAMESPACE"
          valueFrom:
            fieldRef:
              fieldPath: metadata.namespace
  volumeClaimTemplates:
  - metadata:
      name: es-persistent-storage
      annotations:
        volume.beta.kubernetes.io/storage-class: "default"
    spec:
      accessModes: [ "ReadWriteOnce" ]
      resources:
        requests:
          storage: 20Gi

---

apiVersion: extensions/v1beta1
kind: Deployment
metadata:
  name: kibana-logging
  namespace: kube-system
  labels:
    k8s-addon: logging-elasticsearch.addons.k8s.io
    k8s-app: kibana-logging
    kubernetes.io/cluster-service: "true"
spec:
  replicas: 1
  selector:
    matchLabels:
      k8s-app: kibana-logging
  template:
    metadata:
      labels:
        k8s-app: kibana-logging
    spec:
      containers:
      - name: kibana-logging
        image: k8s.gcr.io/kibana:v4.6.1-1
        resources:
          # keep request = limit to keep this container in guaranteed class
          limits:
            cpu: 100m
          requests:
            cpu: 100m
        env:
          - name: "ELASTICSEARCH_URL"
            value: "http://elasticsearch-logging:9200"
          - name: "KIBANA_BASE_URL"
            value: "/api/v1/proxy/namespaces/kube-system/services/kibana-logging"
        ports:
        - containerPort: 5601
          name: ui
          protocol: TCP

---

apiVersion: v1
kind: Service
metadata:
  name: kibana-logging
  namespace: kube-system
  labels:
    k8s-addon: logging-elasticsearch.addons.k8s.io
    k8s-app: kibana-logging
    kubernetes.io/cluster-service: "true"
    kubernetes.io/name: "Kibana"
spec:
  ports:
  - port: 5601
    protocol: TCP
    targetPort: ui
  selector:
    k8s-app: kibana-logging