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

{{/*
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.
*/}}

{{- define "mariadbReadinessProbe" }}
exec:
  command:
    - /tmp/readiness.sh
{{- end }}


{{- if .Values.manifests.statefulset }}
{{- $envAll := . }}

{{- $serviceAccountName := printf "%s-%s" .Release.Name "mariadb" }}
{{ tuple $envAll "mariadb" $serviceAccountName | include "helm-toolkit.snippets.kubernetes_pod_rbac_serviceaccount" }}
---
apiVersion: rbac.authorization.k8s.io/v1beta1
kind: Role
metadata:
  name: {{ $serviceAccountName }}
  namespace: {{ $envAll.Release.Namespace }}
rules:
  - apiGroups:
      - ""
    resources:
      - configmaps
    verbs:
      - create
  - apiGroups:
      - ""
    resourceNames:
      - {{ printf "%s-%s" .Release.Name "mariadb-state" | quote }}
    resources:
      - configmaps
    verbs:
      - get
      - patch
  - apiGroups:
      - ""
    resourceNames:
      - {{ tuple "oslo_db" "direct" . | include "helm-toolkit.endpoints.hostname_short_endpoint_lookup" }}
    resources:
      - endpoints
    verbs:
      - get
---
apiVersion: rbac.authorization.k8s.io/v1beta1
kind: RoleBinding
metadata:
  name: {{ $serviceAccountName }}
  namespace: {{ $envAll.Release.Namespace }}
roleRef:
  apiGroup: rbac.authorization.k8s.io
  kind: Role
  name: {{ $serviceAccountName }}
subjects:
  - kind: ServiceAccount
    name: {{ $serviceAccountName }}
    namespace: {{ $envAll.Release.Namespace }}
---
apiVersion: apps/v1
kind: StatefulSet
metadata:
  # NOTE(portdirect): the statefulset name must match the POD_NAME_PREFIX env var for discovery to work
  name: {{ tuple "oslo_db" "direct" . | include "helm-toolkit.endpoints.hostname_short_endpoint_lookup" }}
  annotations:
    {{ tuple $envAll | include "helm-toolkit.snippets.release_uuid" }}
    configmap-bin-hash: {{ tuple "configmap-bin.yaml" . | include "helm-toolkit.utils.hash" }}
    configmap-etc-hash: {{ tuple "configmap-etc.yaml" . | include "helm-toolkit.utils.hash" }}
    mariadb-dbadmin-password-hash: {{ tuple "secret-dbadmin-password.yaml" . | include "helm-toolkit.utils.hash" }}
    mariadb-sst-password-hash: {{ tuple "secret-dbadmin-password.yaml" . | include "helm-toolkit.utils.hash" }}
  labels:
{{ tuple $envAll "mariadb" "server" | include "helm-toolkit.snippets.kubernetes_metadata_labels" | indent 4 }}
spec:
  serviceName: "{{ tuple "oslo_db" "discovery" . | include "helm-toolkit.endpoints.hostname_short_endpoint_lookup" }}"
  podManagementPolicy: "Parallel"
  replicas: {{ .Values.pod.replicas.server }}
  selector:
    matchLabels:
{{ tuple $envAll "mariadb" "server" | include "helm-toolkit.snippets.kubernetes_metadata_labels" | indent 6 }}
  template:
    metadata:
      labels:
{{ tuple $envAll "mariadb" "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" }}
        mariadb-dbadmin-password-hash: {{ tuple "secret-dbadmin-password.yaml" . | include "helm-toolkit.utils.hash" }}
        mariadb-sst-password-hash: {{ tuple "secret-dbadmin-password.yaml" . | include "helm-toolkit.utils.hash" }}
    spec:
      shareProcessNamespace: true
      serviceAccountName: {{ $serviceAccountName }}
{{ dict "envAll" $envAll "application" "server" | include "helm-toolkit.snippets.kubernetes_pod_security_context" | indent 6 }}
      affinity:
{{ tuple $envAll "mariadb" "server" | include "helm-toolkit.snippets.kubernetes_pod_anti_affinity" | indent 8 }}
      nodeSelector:
        {{ .Values.labels.server.node_selector_key }}: {{ .Values.labels.server.node_selector_value }}
      initContainers:
{{ tuple $envAll "mariadb" list | include "helm-toolkit.snippets.kubernetes_entrypoint_init_container" | indent 8 }}
{{- if .Values.volume.chown_on_start }}
        - name: mariadb-perms
{{ tuple $envAll "mariadb" | include "helm-toolkit.snippets.image" | indent 10 }}
{{ dict "envAll" $envAll "application" "server" "container" "perms" | include "helm-toolkit.snippets.kubernetes_container_security_context" | indent 10 }}
{{ tuple $envAll $envAll.Values.pod.resources.server | include "helm-toolkit.snippets.kubernetes_resources" | indent 10 }}
          command:
            - chown
            - -R
            - "mysql:mysql"
            - /var/lib/mysql
          volumeMounts:
            - name: pod-tmp
              mountPath: /tmp
            - name: mysql-data
              mountPath: /var/lib/mysql
{{- end }}
      containers:
        - name: mariadb
{{ tuple $envAll "mariadb" | include "helm-toolkit.snippets.image" | indent 10 }}
{{ dict "envAll" $envAll "application" "server" "container" "mariadb" | include "helm-toolkit.snippets.kubernetes_container_security_context" | indent 10 }}
{{ tuple $envAll $envAll.Values.pod.resources.server | include "helm-toolkit.snippets.kubernetes_resources" | indent 10 }}
          env:
            - name: POD_NAMESPACE
              valueFrom:
                fieldRef:
                  fieldPath: metadata.namespace
            - name: MARIADB_REPLICAS
              value: {{ .Values.pod.replicas.server | quote }}
            - name: POD_NAME_PREFIX
              value: {{ tuple "oslo_db" "direct" . | include "helm-toolkit.endpoints.hostname_short_endpoint_lookup" }}
            - name: DISCOVERY_DOMAIN
              value: {{ tuple "oslo_db" "discovery" . | include "helm-toolkit.endpoints.hostname_fqdn_endpoint_lookup" }}
            - name: DIRECT_SVC_NAME
              value: {{ tuple "oslo_db" "direct" . | include "helm-toolkit.endpoints.hostname_short_endpoint_lookup" }}
            - name: WSREP_PORT
              value: {{ tuple "oslo_db" "direct" "wsrep" . | include "helm-toolkit.endpoints.endpoint_port_lookup" | quote }}
            - name: STATE_CONFIGMAP
              value: {{ printf "%s-%s" .Release.Name "mariadb-state" | quote }}
            - name: MYSQL_DBADMIN_USERNAME
              value: {{ .Values.endpoints.oslo_db.auth.admin.username }}
            - name: MYSQL_DBADMIN_PASSWORD
              valueFrom:
                secretKeyRef:
                  name: mariadb-dbadmin-password
                  key: MYSQL_DBADMIN_PASSWORD
            - name: MYSQL_DBSST_USERNAME
              value: {{ .Values.endpoints.oslo_db.auth.sst.username }}
            - name: MYSQL_DBSST_PASSWORD
              valueFrom:
                secretKeyRef:
                  name: mariadb-dbsst-password
                  key: MYSQL_DBSST_PASSWORD
          ports:
            - name: mysql
              protocol: TCP
              containerPort: {{ tuple "oslo_db" "direct" "mysql" . | include "helm-toolkit.endpoints.endpoint_port_lookup" }}
            - name: wsrep
              protocol: TCP
              containerPort: {{ tuple "oslo_db" "direct" "wsrep" . | include "helm-toolkit.endpoints.endpoint_port_lookup" }}
          command:
            - /tmp/start.py
          lifecycle:
            preStop:
              exec:
                command:
                  - /tmp/stop.sh
{{ dict "envAll" . "component" "server" "container" "mariadb" "type" "readiness" "probeTemplate" (include "mariadbReadinessProbe" . | fromYaml) | include "helm-toolkit.snippets.kubernetes_probe" | indent 10 -}}
          volumeMounts:
            - name: pod-tmp
              mountPath: /tmp
            - name: var-run
              mountPath: /var/run/mysqld
            - name: mycnfd
              mountPath: /etc/mysql/conf.d
            - name: mariadb-bin
              mountPath: /tmp/start.py
              subPath: start.py
              readOnly: true
            - name: mariadb-bin
              mountPath: /tmp/stop.sh
              subPath: stop.sh
              readOnly: true
            - name: mariadb-bin
              mountPath: /tmp/readiness.sh
              subPath: readiness.sh
              readOnly: true
            - name: mariadb-etc
              mountPath: /etc/mysql/my.cnf
              subPath: my.cnf
              readOnly: true
            - name: mariadb-etc
              mountPath: /etc/mysql/conf.d/00-base.cnf
              subPath: 00-base.cnf
              readOnly: true
            {{- if .Values.conf.database.config_override }}
            - name: mariadb-etc
              mountPath: /etc/mysql/conf.d/20-override.cnf
              subPath: 20-override.cnf
              readOnly: true
            {{- end }}
            - name: mariadb-etc
              mountPath: /etc/mysql/conf.d/99-force.cnf
              subPath: 99-force.cnf
              readOnly: true
            - name: mariadb-secrets
              mountPath: /etc/mysql/admin_user.cnf
              subPath: admin_user.cnf
              readOnly: true
            - name: mysql-data
              mountPath: /var/lib/mysql
      volumes:
        - name: pod-tmp
          emptyDir: {}
        - name: mycnfd
          emptyDir: {}
        - name: var-run
          emptyDir: {}
        - name: mariadb-bin
          configMap:
            name: mariadb-bin
            defaultMode: 0555
        - name: mariadb-etc
          configMap:
            name: mariadb-etc
            defaultMode: 0444
        - name: mariadb-secrets
          secret:
            secretName: mariadb-secrets
            defaultMode: 0444
        {{- if not .Values.volume.enabled }}
        - name: mysql-data
        {{- if .Values.volume.use_local_path_for_single_pod_cluster.enabled }}
          hostPath:
            path: {{ .Values.volume.use_local_path_for_single_pod_cluster.host_path }}
            type: DirectoryOrCreate
        {{- else }}
          emptyDir: {}
        {{- end }}
        {{- end }}
{{- if .Values.volume.enabled }}
  volumeClaimTemplates:
  - metadata:
      name: mysql-data
    spec:
      accessModes: [ "ReadWriteOnce" ]
      resources:
        requests:
          storage: {{ .Values.volume.size }}
      storageClassName: {{ .Values.volume.class_name }}
{{- end }}
{{- end }}