{{/*
Copyright 2017 The Openstack-Helm Authors.

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

   http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/}}

{{- if .Values.manifests.daemonset }}
{{- $envAll := . }}
{{- $esUserSecret := .Values.secrets.elasticsearch.user }}

{{- $mounts_metricbeat := .Values.pod.mounts.metricbeat.metricbeat }}

{{- $serviceAccountName := printf "%s-%s" .Release.Name "metricbeat" }}
{{ tuple $envAll "metricbeat" $serviceAccountName | include "helm-toolkit.snippets.kubernetes_pod_rbac_serviceaccount" }}
---
apiVersion: rbac.authorization.k8s.io/v1beta1
kind: ClusterRoleBinding
metadata:
  name: {{ $serviceAccountName }}
subjects:
  - kind: ServiceAccount
    name: {{ $serviceAccountName }}
    namespace: {{ .Release.Namespace }}
roleRef:
  kind: ClusterRole
  name: {{ $serviceAccountName }}
  apiGroup: rbac.authorization.k8s.io
---
kind: ClusterRole
apiVersion: rbac.authorization.k8s.io/v1
metadata:
  name: {{ $serviceAccountName }}
rules:
rules:
  - apiGroups:
      - ""
    resources:
      - namespaces
      - nodes
      - pods
      - services
      - replicationcontrollers
      - limitranges
    verbs:
      - get
      - list
      - watch
  - apiGroups:
      - extensions
    resources:
      - daemonsets
      - deployments
      - replicasets
    verbs:
      - list
      - watch
  - apiGroups:
      - apps
    resources:
      - statefulsets
    verbs:
      - get
      - list
      - watch
---
apiVersion: extensions/v1beta1
kind: DaemonSet
metadata:
  name: metricbeat-node-modules
spec:
{{ tuple $envAll "metricbeat" | include "helm-toolkit.snippets.kubernetes_upgrades_daemonset" | indent 2 }}
  template:
    metadata:
      labels:
{{ tuple $envAll "metricbeat" "daemon" | include "helm-toolkit.snippets.kubernetes_metadata_labels" | indent 8 }}
      annotations:
        configmap-etc-hash: {{ tuple "configmap-etc.yaml" . | include "helm-toolkit.utils.hash" }}
    spec:
      hostNetwork: true
      dnsPolicy: ClusterFirstWithHostNet
      serviceAccountName: {{ $serviceAccountName }}
      initContainers:
{{ tuple $envAll "metricbeat" list | include "helm-toolkit.snippets.kubernetes_entrypoint_init_container" | indent 8 }}
      containers:
        - name: metricbeat
          securityContext:
            privileged: true
            runAsUser: 0
          image: {{ .Values.images.tags.metricbeat }}
          imagePullPolicy: {{ .Values.images.pull_policy }}
{{ tuple $envAll $envAll.Values.pod.resources.metricbeat | include "helm-toolkit.snippets.kubernetes_resources" | indent 10 }}
          args:
            - "-c"
            - "/etc/metricbeat.yml"
            - "-e"
            - "-system.hostfs=/hostfs"
          env:
            - name: ELASTICSEARCH_HOST
              value: {{ tuple "elasticsearch" "internal" . | include "helm-toolkit.endpoints.hostname_namespaced_endpoint_lookup" | quote }}
            - name: ELASTICSEARCH_PORT
              value: {{ tuple "elasticsearch" "internal" "http" . | include "helm-toolkit.endpoints.endpoint_port_lookup" | quote }}
            - name: ELASTICSEARCH_USERNAME
              valueFrom:
                secretKeyRef:
                  name: {{ $esUserSecret }}
                  key: ELASTICSEARCH_USERNAME
            - name: ELASTICSEARCH_PASSWORD
              valueFrom:
                secretKeyRef:
                  name: {{ $esUserSecret }}
                  key: ELASTICSEARCH_PASSWORD
            - name: POD_NAMESPACE
              valueFrom:
                fieldRef:
                  fieldPath: metadata.namespace
          volumeMounts:
            - name: metricbeat-etc
              mountPath: /etc/metricbeat.yml
              subPath: metricbeat.yml
              readOnly: true
            - name: metricbeat-etc
              mountPath: /usr/share/metricbeat/modules.d/system.yml
              subPath: system.yml
              readOnly: true
            - name: metricbeat-etc
              mountPath: /usr/share/metricbeat/modules.d/kubernetes.yml
              subPath: daemonset_kubernetes.yml
              readOnly: true
            - name: dockersock
              mountPath: /var/run/docker.sock
            - name: proc
              mountPath: /hostfs/proc
              readOnly: true
            - name: cgroup
              mountPath: /hostfs/sys/fs/cgroup
              readOnly: true
{{ if $mounts_metricbeat.volumeMounts }}{{ toYaml $mounts_metricbeat.volumeMounts | indent 12 }}{{ end }}
      volumes:
      - name: proc
        hostPath:
          path: /proc
      - name: cgroup
        hostPath:
          path: /sys/fs/cgroup
      - name: dockersock
        hostPath:
          path: /var/run/docker.sock
      - name: metricbeat-etc
        configMap:
          defaultMode: 0444
          name: metricbeat-etc
      - name: data
        emptyDir: {}
{{ if $mounts_metricbeat.volumes }}{{ toYaml $mounts_metricbeat.volumes | indent 8 }}{{ end }}
{{- end }}