logging.yaml

apiVersion: v1
kind: ConfigMap
metadata:
  name: fluentd-config
  namespace: astroml
data:
  fluent.conf: |
    <source>
      @type tail
      path /var/log/containers/*.log
      pos_file /var/log/fluentd-containers.log.pos
      tag kubernetes.*
      read_from_head true
      <parse>
        @type json
        time_format %Y-%m-%dT%H:%M:%S.%NZ
      </parse>
    </source>

    <filter kubernetes.**>
      @type kubernetes_metadata
    </filter>

    <filter kubernetes.**>
      @type record_transformer
      <record>
        hostname "#{Socket.gethostname}"
      </record>
    </filter>

    <match kubernetes.**>
      @type elasticsearch
      host elasticsearch
      port 9200
      logstash_format true
      logstash_prefix astroml
      logstash_dateformat %Y.%m.%d
      include_tag_key true
      tag_key @log_name
      flush_interval 1s
    </match>
---
apiVersion: apps/v1
kind: Deployment
metadata:
  name: fluentd
  namespace: astroml
  labels:
    app: fluentd
spec:
  replicas: 1
  selector:
    matchLabels:
      app: fluentd
  template:
    metadata:
      labels:
        app: fluentd
    spec:
      serviceAccountName: fluentd
      containers:
      - name: fluentd
        image: fluent/fluentd-kubernetes-daemonset:v1-debian-elasticsearch
        env:
        - name: FLUENT_ELASTICSEARCH_HOST
          value: "elasticsearch"
        - name: FLUENT_ELASTICSEARCH_PORT
          value: "9200"
        - name: FLUENT_ELASTICSEARCH_SCHEME
          value: "http"
        resources:
          limits:
            memory: 500Mi
          requests:
            cpu: 100m
            memory: 200Mi
        volumeMounts:
        - name: varlog
          mountPath: /var/log
        - name: varlibdockercontainers
          mountPath: /var/lib/docker/containers
          readOnly: true
        - name: fluentd-config
          mountPath: /fluentd/etc
      terminationGracePeriodSeconds: 30
      volumes:
      - name: varlog
        hostPath:
          path: /var/log
      - name: varlibdockercontainers
        hostPath:
          path: /var/lib/docker/containers
      - name: fluentd-config
        configMap:
          name: fluentd-config
---
apiVersion: v1
kind: ServiceAccount
metadata:
  name: fluentd
  namespace: astroml
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRole
metadata:
  name: fluentd
rules:
- apiGroups: [""]
  resources: ["pods", "namespaces"]
  verbs: ["get", "list", "watch"]
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
  name: fluentd
roleRef:
  apiGroup: rbac.authorization.k8s.io
  kind: ClusterRole
  name: fluentd
subjects:
- kind: ServiceAccount
  name: fluentd
  namespace: astroml
---
apiVersion: apps/v1
kind: Deployment
metadata:
  name: elasticsearch
  namespace: astroml
  labels:
    app: elasticsearch
spec:
  replicas: 1
  selector:
    matchLabels:
      app: elasticsearch
  template:
    metadata:
      labels:
        app: elasticsearch
    spec:
      containers:
      - name: elasticsearch
        image: docker.elastic.co/elasticsearch/elasticsearch:8.8.0
        ports:
        - containerPort: 9200
        - containerPort: 9300
        env:
        - name: discovery.type
          value: single-node
        - name: ES_JAVA_OPTS
          value: "-Xms512m -Xmx512m"
        - name: xpack.security.enabled
          value: "false"
        resources:
          requests:
            memory: "1Gi"
            cpu: "500m"
          limits:
            memory: "2Gi"
            cpu: "1000m"
        volumeMounts:
        - name: elasticsearch-storage
          mountPath: /usr/share/elasticsearch/data
      volumes:
      - name: elasticsearch-storage
        persistentVolumeClaim:
          claimName: elasticsearch-pvc
---
apiVersion: v1
kind: Service
metadata:
  name: elasticsearch
  namespace: astroml
  labels:
    app: elasticsearch
spec:
  type: ClusterIP
  ports:
  - port: 9200
    targetPort: 9200
    name: http
  - port: 9300
    targetPort: 9300
    name: transport
  selector:
    app: elasticsearch
---
apiVersion: v1
kind: PersistentVolumeClaim
metadata:
  name: elasticsearch-pvc
  namespace: astroml
spec:
  accessModes:
    - ReadWriteOnce
  resources:
    requests:
      storage: 30Gi
---
apiVersion: apps/v1
kind: Deployment
metadata:
  name: kibana
  namespace: astroml
  labels:
    app: kibana
spec:
  replicas: 1
  selector:
    matchLabels:
      app: kibana
  template:
    metadata:
      labels:
        app: kibana
    spec:
      containers:
      - name: kibana
        image: docker.elastic.co/kibana/kibana:8.8.0
        ports:
        - containerPort: 5601
        env:
        - name: ELASTICSEARCH_HOSTS
          value: "http://elasticsearch:9200"
        resources:
          requests:
            memory: "512Mi"
            cpu: "250m"
          limits:
            memory: "1Gi"
            cpu: "500m"
---
apiVersion: v1
kind: Service
metadata:
  name: kibana
  namespace: astroml
  labels:
    app: kibana
spec:
  type: ClusterIP
  ports:
  - port: 5601
    targetPort: 5601
    name: http
  selector:
    app: kibana