# From https://github.com/fluent/fluentd-kubernetes-daemonset/blob/94221c9b860ff8a47b6b625fdb6fc3fb05f36e04/fluentd-daemonset-elasticsearch-rbac.yaml

---
apiVersion: v1
kind: ServiceAccount
metadata:
  name: fluentd
  namespace: kube-system

---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRole
metadata:
  name: fluentd
rules:
  - apiGroups:
      - ""
    resources:
      - pods
      - namespaces
    verbs:
      - get
      - list
      - watch

---
kind: ClusterRoleBinding
apiVersion: rbac.authorization.k8s.io/v1
metadata:
  name: fluentd
roleRef:
  kind: ClusterRole
  name: fluentd
  apiGroup: rbac.authorization.k8s.io
subjects:
  - kind: ServiceAccount
    name: fluentd
    namespace: kube-system
---
apiVersion: apps/v1
kind: DaemonSet
metadata:
  name: fluentd
  namespace: kube-system
  labels:
    k8s-app: fluentd-logging
    version: v1
spec:
  selector:
    matchLabels:
      k8s-app: fluentd-logging
      version: v1
  template:
    metadata:
      labels:
        k8s-app: fluentd-logging
        version: v1
    spec:
      serviceAccount: fluentd
      serviceAccountName: fluentd
      tolerations:
        - key: node-role.kubernetes.io/master
          effect: NoSchedule
      containers:
        - name: fluentd
          image: fluent/fluentd-kubernetes-daemonset:v1-debian-elasticsearch
          env:
            - name: FLUENT_ELASTICSEARCH_HOST
              # value: "elasticsearch-logging"
              value: elasticsearch.default
            - name: FLUENT_ELASTICSEARCH_PORT
              value: "9200"
            - name: FLUENT_ELASTICSEARCH_SCHEME
              value: "http"
            # Option to configure elasticsearch plugin with self signed certs
            # ================================================================
            - name: FLUENT_ELASTICSEARCH_SSL_VERIFY
              value: "true"
            # Option to configure elasticsearch plugin with tls
            # ================================================================
            - name: FLUENT_ELASTICSEARCH_SSL_VERSION
              value: "TLSv1_2"
            # X-Pack Authentication
            # =====================
            - name: FLUENT_ELASTICSEARCH_USER
              value: "elastic"
            - name: FLUENT_ELASTICSEARCH_PASSWORD
              value: "changeme"
            - name: FLUENTD_SYSTEMD_CONF
              value: disable
            - name: K8S_NODE_NAME
              valueFrom:
                fieldRef:
                  fieldPath: spec.nodeName
            - name: "FLUENT_CONTAINER_TAIL_PARSER_TYPE"
              value: "${FLUENT_CONTAINER_TAIL_PARSER_TYPE-json_in_json}"
            - name: FLUENT_CONTAINER_TAIL_EXCLUDE_PATH
              value: /var/log/containers/fluent*
          resources:
            limits:
              memory: 200Mi
            requests:
              cpu: 100m
              memory: 200Mi
          volumeMounts:
            - name: varlog
              mountPath: /var/log
            # When actual pod logs in /var/lib/docker/containers, the following lines should be used.
            - name: dockercontainerlogdirectory
              mountPath: /var/lib/docker/containers
              readOnly: true
            # When actual pod logs in /var/log/pods, the following lines should be used.
            # - name: dockercontainerlogdirectory
            # mountPath: /var/log/pods
            # readOnly: true
      terminationGracePeriodSeconds: 30
      volumes:
        - name: varlog
          hostPath:
            path: /var/log
        # When actual pod logs in /var/lib/docker/containers, the following lines should be used.
        - name: dockercontainerlogdirectory
          hostPath:
            path: /var/lib/docker/containers
        # When actual pod logs in /var/log/pods, the following lines should be used.
        # - name: dockercontainerlogdirectory
        # hostPath:
        # path: /var/log/pods