openstack-helm-infra/zookeeper/templates/statefulset.yaml

{{/*
Copyright 2019 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.statefulset }}
{{- $envAll := . }}

{{- $mounts_zookeeper := .Values.pod.mounts.zookeeper.zookeeper }}
{{- $mounts_zookeeper_init := .Values.pod.mounts.zookeeper.init_container }}
{{- $zookeeperUserSecret := .Values.secrets.zookeeper.admin }}

{{- $serviceAccountName := printf "%s-%s" .Release.Name "zookeeper" }}
{{ tuple $envAll "zookeeper" $serviceAccountName | include "helm-toolkit.snippets.kubernetes_pod_rbac_serviceaccount" }}
---
apiVersion: rbac.authorization.k8s.io/v1beta1
kind: ClusterRole
metadata:
  name: {{ $serviceAccountName }}
rules:
  - apiGroups:
      - ""
    resources:
      - nodes
      - nodes/proxy
      - services
      - endpoints
      - pods
    verbs:
      - get
      - list
      - watch
  - apiGroups:
      - ""
    resources:
      - configmaps
    verbs:
      - get
  - nonResourceURLs:
      - "/metrics"
    verbs:
      - get
---
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
---
apiVersion: apps/v1
kind: StatefulSet
metadata:
  name: zookeeper
  annotations:
    {{ tuple $envAll | include "helm-toolkit.snippets.release_uuid" }}
  labels:
{{ tuple $envAll "zookeeper" "server" | include "helm-toolkit.snippets.kubernetes_metadata_labels" | indent 4 }}
spec:
  serviceName: {{ tuple "zookeeper" "discovery" . | include "helm-toolkit.endpoints.hostname_short_endpoint_lookup" }}
  replicas: {{ .Values.pod.replicas.zookeeper }}
  podManagementPolicy: Parallel
  selector:
    matchLabels:
{{ tuple $envAll "zookeeper" "server" | include "helm-toolkit.snippets.kubernetes_metadata_labels" | indent 6 }}
  template:
    metadata:
      labels:
{{ tuple $envAll "zookeeper" "server" | include "helm-toolkit.snippets.kubernetes_metadata_labels" | indent 8 }}
      annotations:
{{ tuple $envAll | include "helm-toolkit.snippets.release_uuid" | indent 8 }}
        configmap-bin-hash: {{ tuple "configmap-bin.yaml" . | include "helm-toolkit.utils.hash" }}
        configmap-etc-hash: {{ tuple "configmap-etc.yaml" . | include "helm-toolkit.utils.hash" }}
    spec:
{{ dict "envAll" $envAll "application" "zookeeper" | include "helm-toolkit.snippets.kubernetes_pod_security_context" | indent 6 }}
      serviceAccountName: {{ $serviceAccountName }}
      affinity:
{{ tuple $envAll "zookeeper" "zookeeper" | include "helm-toolkit.snippets.kubernetes_pod_anti_affinity" | indent 8 }}
      nodeSelector:
        {{ .Values.labels.zookeeper.node_selector_key }}: {{ .Values.labels.zookeeper.node_selector_value | quote }}
      terminationGracePeriodSeconds: {{ .Values.pod.lifecycle.termination_grace_period.zookeeper.timeout | default "30" }}
      initContainers:
{{ tuple $envAll "zookeeper" list | include "helm-toolkit.snippets.kubernetes_entrypoint_init_container" | indent 8 }}
        - name: zookeeper-perms
{{ tuple $envAll "zookeeper" | include "helm-toolkit.snippets.image" | indent 10 }}
{{ tuple $envAll $envAll.Values.pod.resources.zookeeper | include "helm-toolkit.snippets.kubernetes_resources" | indent 10 }}
{{ dict "envAll" $envAll "application" "zookeeper" "container" "zookeeper_perms" | include "helm-toolkit.snippets.kubernetes_container_security_context" | indent 10 }}
          command:
            - chown
            - -R
            - "zookeeper:"
            - {{ .Values.conf.zookeeper.config.data_directory }}
          volumeMounts:
            - name: pod-tmp
              mountPath: /tmp
            - name: data
              mountPath: {{ .Values.conf.zookeeper.config.data_directory }}
        - name: zookeeper-id
{{ tuple $envAll "zookeeper" | include "helm-toolkit.snippets.image" | indent 10 }}
{{ tuple $envAll $envAll.Values.pod.resources.zookeeper | include "helm-toolkit.snippets.kubernetes_resources" | indent 10 }}
{{ dict "envAll" $envAll "application" "zookeeper" "container" "zookeeper_perms" | include "helm-toolkit.snippets.kubernetes_container_security_context" | indent 10 }}
          command:
            - /tmp/generate-myid.sh
          env:
            - name: ZOO_DATA_DIR
              value: "{{ .Values.conf.zookeeper.config.data_directory }}"
          volumeMounts:
            - name: pod-tmp
              mountPath: /tmp
            - name: zookeeper-bin
              mountPath: /tmp/generate-myid.sh
              subPath: generate-myid.sh
              readOnly: true
            - name: data
              mountPath: {{ .Values.conf.zookeeper.config.data_directory }}
      containers:
        - name: zookeeper
{{ tuple $envAll "zookeeper" | include "helm-toolkit.snippets.image" | indent 10 }}
{{ tuple $envAll $envAll.Values.pod.resources.zookeeper | include "helm-toolkit.snippets.kubernetes_resources" | indent 10 }}
{{ dict "envAll" $envAll "application" "zookeeper" "container" "zookeeper" | include "helm-toolkit.snippets.kubernetes_container_security_context" | indent 10 }}
          lifecycle:
            preStop:
              exec:
                command:
                  - /tmp/zookeeper.sh
                  - stop
          ports:
            - name: client
              containerPort: {{ tuple "zookeeper" "internal" "client" . | include "helm-toolkit.endpoints.endpoint_port_lookup" }}
            - name: election
              containerPort: {{ tuple "zookeeper" "internal" "election" . | include "helm-toolkit.endpoints.endpoint_port_lookup" }}
            - name: server
              containerPort: {{ tuple "zookeeper" "internal" "server" . | include "helm-toolkit.endpoints.endpoint_port_lookup" }}
          env:
            - name: ZOO_DATA_DIR
              value: "{{ .Values.conf.zookeeper.config.data_directory }}"
            - name: ZOO_CLIENT_PORT
              value: "{{ tuple "zookeeper" "internal" "client" . | include "helm-toolkit.endpoints.endpoint_port_lookup" }}"
          readinessProbe:
            initialDelaySeconds: 20
            periodSeconds: 30
            timeoutSeconds: 5
            failureThreshold: 2
            successThreshold: 1
            exec:
              command:
              - /tmp/zookeeper-readiness.sh
          livenessProbe:
            initialDelaySeconds: 20
            periodSeconds: 30
            timeoutSeconds: 5
            failureThreshold: 2
            successThreshold: 1
            exec:
              command:
              - /tmp/zookeeper-liveness.sh
          volumeMounts:
            - name: pod-tmp
              mountPath: /tmp
            - name: etczookeeper
              mountPath: /etc/zookeeper
            - name: zookeeper-etc
              mountPath: /conf/zoo.cfg
              subPath: zoo.cfg
            - name: zookeeper-bin
              mountPath: /tmp/zookeeper.sh
              subPath: zookeeper.sh
              readOnly: true
            - name: zookeeper-bin
              mountPath: /tmp/zookeeper-liveness.sh
              subPath: zookeeper-liveness.sh
              readOnly: true
            - name: zookeeper-bin
              mountPath: /tmp/zookeeper-readiness.sh
              subPath: zookeeper-readiness.sh
              readOnly: true
            - name: data
              mountPath: {{ .Values.conf.zookeeper.config.data_directory }}
{{ if $mounts_zookeeper.volumeMounts }}{{ toYaml $mounts_zookeeper.volumeMounts | indent 12 }}{{ end }}
      volumes:
        - name: pod-tmp
          emptyDir: {}
        - name: etczookeeper
          emptyDir: {}
        - name: zookeeper-etc
          secret:
            secretName: zookeeper-etc
            defaultMode: 0444
        - name: zookeeper-bin
          configMap:
            name: zookeeper-bin
            defaultMode: 0555
{{ if $mounts_zookeeper.volumes }}{{ toYaml $mounts_zookeeper.volumes | indent 8 }}{{ end }}
{{- if not .Values.storage.enabled }}
        - name: data
          emptyDir: {}
{{- else }}
  volumeClaimTemplates:
    - metadata:
        name: data
      spec:
        accessModes: {{ .Values.storage.pvc.access_mode }}
        resources:
          requests:
            storage: {{ .Values.storage.requests.storage  }}
        storageClassName: {{ .Values.storage.storage_class }}
{{- end }}
{{- end }}