openstack-helm-infra/postgresql/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.
*/}}

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

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

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

{{- $serviceAccountName := "postgresql" }}
{{ tuple $envAll "postgresql" $serviceAccountName | include "helm-toolkit.snippets.kubernetes_pod_rbac_serviceaccount" }}
---
apiVersion: rbac.authorization.k8s.io/v1
kind: Role
metadata:
  name: {{ $serviceAccountName }}
  namespace: {{ $envAll.Release.Namespace }}
rules:
  - apiGroups:
      - ""
    resources:
      - configmaps
    verbs:
      - create
      - get
      - list
      - patch
      - update
      - watch
  - apiGroups:
      - ""
    resources:
      - endpoints
    verbs:
      - get
      - patch
      - update
      # the following three privileges are necessary only when using endpoints
      - create
      - list
      - watch
  - apiGroups:
      - ""
    resources:
      - pods
    verbs:
      - get
      - list
      - patch
      - update
      - watch
  # The following privilege is only necessary for creation of headless service
  # for postgresql-config endpoint, in order to prevent cleaning it up by the
  # k8s master.
  - apiGroups:
      - ""
    resources:
      - services
    verbs:
      - create
      - get
      - list
      - patch
      - update
      - watch
      - delete
---
apiVersion: rbac.authorization.k8s.io/v1
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:
  name: postgresql
  annotations:
    {{ tuple $envAll | include "helm-toolkit.snippets.release_uuid" }}
  labels:
{{ tuple $envAll "postgresql" "server" | include "helm-toolkit.snippets.kubernetes_metadata_labels" | indent 4 }}
    cluster-name: {{ tuple "postgresql" "internal" . | include "helm-toolkit.endpoints.hostname_short_endpoint_lookup" }}
spec:
  serviceName: {{ tuple "postgresql" "internal" . | include "helm-toolkit.endpoints.hostname_short_endpoint_lookup" }}
  podManagementPolicy: "Parallel"
{{ tuple $envAll | include "helm-toolkit.snippets.kubernetes_upgrades_statefulset" | indent 2 }}
  replicas: {{ .Values.pod.replicas.server }}
  selector:
    matchLabels:
{{ tuple $envAll "postgresql" "server" | include "helm-toolkit.snippets.kubernetes_metadata_labels" | indent 6 }}
      cluster-name: {{ tuple "postgresql" "internal" . | include "helm-toolkit.endpoints.hostname_short_endpoint_lookup" }}
  template:
    metadata:
      labels:
{{ tuple $envAll "postgresql" "server" | include "helm-toolkit.snippets.kubernetes_metadata_labels" | indent 8 }}
        cluster-name: {{ tuple "postgresql" "internal" . | include "helm-toolkit.endpoints.hostname_short_endpoint_lookup" }}
      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" }}
{{ dict "envAll" $envAll "podName" "postgresql" "containerNames" (list "postgresql" "set-volume-perms" "init") | include "helm-toolkit.snippets.kubernetes_mandatory_access_control_annotation" | indent 8 }}
        configmap-admin-hash: {{ tuple "secret-admin.yaml" . | include "helm-toolkit.utils.hash" }}
        configmap-secrets-etc-hash: {{ tuple "secrets-etc.yaml" . | include "helm-toolkit.utils.hash" }}
    spec:
      serviceAccountName: {{ $serviceAccountName }}
{{ dict "envAll" $envAll "application" "server" | include "helm-toolkit.snippets.kubernetes_pod_security_context" | indent 6 }}
      affinity:
{{ tuple $envAll "postgresql" "server" | include "helm-toolkit.snippets.kubernetes_pod_anti_affinity" | indent 8 }}
      nodeSelector:
        {{ .Values.labels.server.node_selector_key }}: {{ .Values.labels.server.node_selector_value }}

      terminationGracePeriodSeconds: {{ .Values.pod.lifecycle.termination_grace_period.server.timeout | default "180" }}
      initContainers:
{{ tuple $envAll "postgresql" list | include "helm-toolkit.snippets.kubernetes_entrypoint_init_container" | indent 8 }}
        - name: set-volume-perms
{{ tuple $envAll "postgresql" | include "helm-toolkit.snippets.image" | indent 10 }}
{{ tuple $envAll $envAll.Values.pod.resources.server | include "helm-toolkit.snippets.kubernetes_resources" | indent 10 }}
          command: ["/bin/sh", "-c"]
          args:
            - set -xe;
              /bin/chown {{ .Values.pod.security_context.server.pod.runAsUser }} {{ .Values.storage.mount.path }};
              /bin/chmod 700 {{ .Values.storage.mount.path }};
              /bin/chmod 700 {{ .Values.storage.mount.path }}/*;
{{ dict "envAll" $envAll "application" "server" "container" "set_volume_perms" | include "helm-toolkit.snippets.kubernetes_container_security_context" | indent 10 }}
          volumeMounts:
            - name: pod-tmp
              mountPath: /tmp
            - name: postgresql-data
              mountPath: {{ .Values.storage.mount.path }}
              subPath: {{ .Values.storage.mount.subpath }}
      containers:
        - name: postgresql
{{ tuple $envAll "postgresql" | include "helm-toolkit.snippets.image" | indent 10 }}
{{ tuple $envAll $envAll.Values.pod.resources.server | include "helm-toolkit.snippets.kubernetes_resources" | indent 10 }}
{{ dict "envAll" $envAll "application" "server" "container" "postgresql" | include "helm-toolkit.snippets.kubernetes_container_security_context" | indent 10 }}
          ports:
            - containerPort: {{ tuple "postgresql-restapi" "internal" "restapi" . | include "helm-toolkit.endpoints.endpoint_port_lookup" }}
              protocol: TCP
            - containerPort: {{ tuple "postgresql" "internal" "postgresql" . | include "helm-toolkit.endpoints.endpoint_port_lookup" }}
              protocol: TCP
          env:
            - name: PGDATA
              value: "{{ .Values.storage.mount.path }}/pgdata"
            - name: ARCHIVE_LIMIT
              value: "{{ .Values.storage.archive.archive_limit }}"
            - name: ARCHIVE_PATH
              value: "{{ .Values.storage.archive.mount_path }}"
            - name: KUBERNETES_NAMESPACE
              valueFrom:
                fieldRef:
                  fieldPath: metadata.namespace
            - name: POD_NAME
              valueFrom:
                fieldRef:
                  fieldPath: metadata.name
            - name: 'POSTGRES_PASSWORD'
              valueFrom:
                secretKeyRef:
                  name: {{ .Values.secrets.postgresql.admin }}
                  key: 'POSTGRES_PASSWORD'
            - name: 'POSTGRES_USER'
              valueFrom:
                secretKeyRef:
                  name: {{ .Values.secrets.postgresql.admin }}
                  key: 'POSTGRES_USER'
          command:
            - /tmp/start.sh
{{ dict "envAll" . "component" "server" "container" "postgresql" "type" "liveness" "probeTemplate" (include "livenessProbeTemplate" . | fromYaml) | include "helm-toolkit.snippets.kubernetes_probe" | trim | indent 10 }}
{{ dict "envAll" . "component" "server" "container" "postgresql" "type" "readiness" "probeTemplate" (include "readinessProbeTemplate" . | fromYaml) | include "helm-toolkit.snippets.kubernetes_probe" | trim | indent 10 }}
          lifecycle:
            preStop:
              exec:
                command:
                  - bash
                  - -c
                  - kill -INT 1
          volumeMounts:
            - name: pod-tmp
              mountPath: /tmp
            - name: pg-run
              mountPath: /var/run/postgresql
            - name: postgresql-bin
              mountPath: /tmp/start.sh
              subPath: start.sh
              readOnly: true
            - name: postgresql-bin
              mountPath: /tmp/readiness.sh
              subPath: readiness.sh
              readOnly: true
            - name: postgresql-etc
              mountPath: /tmp/pg_hba.conf
              subPath: pg_hba.conf
              readOnly: true
            - name: postgresql-etc
              mountPath: /tmp/postgresql.conf
              subPath: postgresql.conf
              readOnly: true
            - name: postgresql-data
              mountPath: {{ .Values.storage.mount.path }}
              subPath: {{ .Values.storage.mount.subpath }}
{{- if  eq .Values.conf.postgresql.archive_mode "on" }}
            - name: postgresql-archive
              mountPath: {{ .Values.storage.archive.mount_path }}
              subPath: {{ .Values.storage.mount.subpath }}
            - name: postgresql-bin
              mountPath: /tmp/archive_cleanup.sh
              subPath: archive_cleanup.sh
              readOnly: true
{{- end }}
      volumes:
        - name: pod-tmp
          emptyDir: {}
        - name: postgres-home-config
          emptyDir: {}
        - name: pg-run
          emptyDir:
            medium: "Memory"
        - name: postgresql-bin
          secret:
            secretName: postgresql-bin
            defaultMode: 0555
        - name: postgresql-etc
          configMap:
            name: postgresql-etc
            defaultMode: 0444
{{- if not .Values.storage.pvc.enabled }}
        - name: postgresql-data
          hostPath:
            path: {{ .Values.storage.host.host_path }}
{{- end }}
{{- if or (eq .Values.conf.postgresql.archive_mode "on" )  (eq .Values.storage.pvc.enabled true) }}
  volumeClaimTemplates:
{{- if  .Values.storage.pvc.enabled }}
    - metadata:
        name: postgresql-data
        annotations:
          {{ .Values.storage.pvc.class_path }}: {{ .Values.storage.pvc.class_name }}
      spec:
        accessModes: ["ReadWriteOnce"]
        resources:
          requests:
            storage: {{ .Values.storage.pvc.size }}
{{- end }}
{{- if  eq .Values.conf.postgresql.archive_mode "on" }}
    - metadata:
        name: postgresql-archive
        annotations:
          {{ .Values.storage.archive_pvc.class_path }}: {{ .Values.storage.archive_pvc.class_name }}
      spec:
        accessModes: ["ReadWriteOnce"]
        resources:
          requests:
            storage: {{ .Values.storage.archive_pvc.size }}
{{- end }}
{{- end }}
{{- end }}