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

{{/*
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_kafka := .Values.pod.mounts.kafka.kafka }}
{{- $mounts_kafka_init := .Values.pod.mounts.kafka.init_container }}
{{- $kafkaUserSecret := .Values.secrets.kafka.admin }}
{{- $kafkaBrokerPort := tuple "kafka" "internal" "broker" . | include "helm-toolkit.endpoints.endpoint_port_lookup" }}

{{- $serviceAccountName := printf "%s-%s" .Release.Name "kafka" }}
{{ tuple $envAll "kafka" $serviceAccountName | include "helm-toolkit.snippets.kubernetes_pod_rbac_serviceaccount" }}
---
apiVersion: rbac.authorization.k8s.io/v1
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/v1
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: kafka
  annotations:
    {{ tuple $envAll | include "helm-toolkit.snippets.release_uuid" }}
  labels:
{{ tuple $envAll "kafka" "broker" | include "helm-toolkit.snippets.kubernetes_metadata_labels" | indent 4 }}
spec:
  serviceName: {{ tuple "kafka" "discovery" . | include "helm-toolkit.endpoints.hostname_short_endpoint_lookup" }}
  replicas: {{ .Values.pod.replicas.kafka }}
  updateStrategy:
    type: OnDelete
  podManagementPolicy: Parallel
  selector:
    matchLabels:
{{ tuple $envAll "kafka" "broker" | include "helm-toolkit.snippets.kubernetes_metadata_labels" | indent 6 }}
  template:
    metadata:
      labels:
{{ tuple $envAll "kafka" "broker" | 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" }}
    spec:
{{ dict "envAll" $envAll "application" "kafka" | include "helm-toolkit.snippets.kubernetes_pod_security_context" | indent 6 }}
      serviceAccountName: {{ $serviceAccountName }}
      affinity:
{{ tuple $envAll "kafka" "broker" | include "helm-toolkit.snippets.kubernetes_pod_anti_affinity" | indent 8 }}
      nodeSelector:
        {{ .Values.labels.kafka.node_selector_key }}: {{ .Values.labels.kafka.node_selector_value | quote }}
      terminationGracePeriodSeconds: {{ .Values.pod.lifecycle.termination_grace_period.kafka.timeout | default "30" }}
      initContainers:
{{ tuple $envAll "kafka" list | include "helm-toolkit.snippets.kubernetes_entrypoint_init_container" | indent 8 }}
      containers:
        - name: kafka
          command:
            - "/tmp/kafka.sh"
{{ tuple $envAll "kafka" | include "helm-toolkit.snippets.image" | indent 10 }}
{{ tuple $envAll $envAll.Values.pod.resources.kafka | include "helm-toolkit.snippets.kubernetes_resources" | indent 10 }}
{{ dict "envAll" $envAll "application" "kafka" "container" "kafka" | include "helm-toolkit.snippets.kubernetes_container_security_context" | indent 10 }}
          ports:
            - name: broker
              containerPort: {{ $kafkaBrokerPort }}
          env:
            - name: ADMIN_USERNAME
              valueFrom:
                secretKeyRef:
                  name: {{ $kafkaUserSecret }}
                  key: KAFKA_ADMIN_USERNAME
            - name: KAFKA_PORT
              value: "{{ $kafkaBrokerPort }}"
            - name: ZOOKEEPER_PORT
              value: "{{ tuple "zookeeper" "internal" "client" . | include "helm-toolkit.endpoints.endpoint_port_lookup" }}"
            - name: KAFKA_ZOOKEEPER_CONNECT
              value: "{{ tuple "zookeeper" "internal" "client" $envAll | include "helm-toolkit.endpoints.host_and_port_endpoint_uri_lookup" }}"
            - name: KAFKA_LISTENERS
              value: "PLAINTEXT://:{{$kafkaBrokerPort}}"
            - name: KAFKA_CREATE_TOPICS
              value: "{{ include "helm-toolkit.utils.joinListWithComma" .Values.conf.kafka.topics }}"
            - name: KAFKA_OPTS
              value: {{ include "helm-toolkit.utils.joinListWithSpace" .Values.conf.kafka.jvm_options | quote }}
          readinessProbe:
            initialDelaySeconds: 20
            periodSeconds: 30
            timeoutSeconds: 5
            failureThreshold: 2
            successThreshold: 1
            exec:
              command:
              - /tmp/kafka-readiness.sh
          livenessProbe:
            initialDelaySeconds: 20
            periodSeconds: 30
            timeoutSeconds: 5
            failureThreshold: 2
            successThreshold: 1
            exec:
              command:
              - /tmp/kafka-liveness.sh
          volumeMounts:
            - name: kafka-bin
              mountPath: /tmp/kafka.sh
              subPath: kafka.sh
              readOnly: true
            - name: kafka-bin
              mountPath: /tmp/kafka-liveness.sh
              subPath: kafka-liveness.sh
              readOnly: true
            - name: kafka-bin
              mountPath: /tmp/kafka-readiness.sh
              subPath: kafka-readiness.sh
              readOnly: true
            - name: kafka-etc
              mountPath: /opt/kafka/config/jaas.conf
              subPath: jaas.conf
              readOnly: true
            - name: data
              mountPath: {{ .Values.conf.kafka.config.data_directory }}
{{ if $mounts_kafka.volumeMounts }}{{ toYaml $mounts_kafka.volumeMounts | indent 12 }}{{ end }}
      volumes:
        - name: kafka-bin
          configMap:
            name: kafka-bin
            defaultMode: 0555
        - name: kafka-etc
          secret:
            secretName: kafka-etc
            defaultMode: 0444
{{ if $mounts_kafka.volumes }}{{ toYaml $mounts_kafka.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 }}