fix(postgresql): init

postgresql/.helmignore

@@ -0,0 +1,23 @@
+# Patterns to ignore when building packages.
+# This supports shell glob matching, relative path matching, and
+# negation (prefixed with !). Only one pattern per line.
+.DS_Store
+# Common VCS dirs
+.git/
+.gitignore
+.bzr/
+.bzrignore
+.hg/
+.hgignore
+.svn/
+# Common backup files
+*.swp
+*.bak
+*.tmp
+*.orig
+*~
+# Various IDEs
+.project
+.idea/
+*.tmproj
+.vscode/

postgresql/Chart.yaml

@@ -0,0 +1,16 @@
+---
+apiVersion: "v2"
+name: "postgresql"
+description: "A Helm chart for running PostgreSQL (Postgres) database"
+type: "application"
+version: "0.1.0"
+appVersion: "16.0-alpine3.18"
+
+keywords:
+  - "postgresql"
+  - "postgres"
+  - "database"
+  - "sql"
+
+annotations:
+  category: "Database"

postgresql/files/10-init-user.sh

@@ -0,0 +1,10 @@
+{{- range $username, $password := .Values.job.users }}
+echo 'user "{{ $username }}":'
+psql -tc "SELECT 1 FROM pg_user WHERE usename = '{{ $username }}'" | grep -q 1;
+if [ $? -ne 0 ]; then
+  psql -c "CREATE USER {{ $username }} WITH ENCRYPTED PASSWORD '{{ $password }}'";
+else
+  psql -c "ALTER USER {{ $username }} WITH ENCRYPTED PASSWORD '{{ $password }}'";
+fi
+echo ""
+{{- end }}

postgresql/files/20-init-db.sh

@@ -0,0 +1,10 @@
+{{- range $name, $config := .Values.job.databases }}
+echo 'database "{{ $name }}":'
+psql -tc "SELECT 1 FROM pg_database WHERE datname = '{{ $name }}'" | grep -q 1
+if [ $? -ne 0 ]; then
+  psql -c "CREATE DATABASE {{ $name }} {{ with $config.additionalParams }}{{ . }} {{ end }}";
+fi
+psql -c "ALTER DATABASE {{ $name }} OWNER TO {{ $config.owner }}";
+psql -c "GRANT ALL PRIVILEGES ON DATABASE {{ $name }} TO {{ $config.owner }}";
+echo ""
+{{- end }}

postgresql/files/_run

@@ -0,0 +1,17 @@
+#!/usr/bin/env bash
+RETRIES={{ .Values.job.retries }}
+until psql -c "select 1" > /dev/null 2>&1 || [ $RETRIES -eq "0" ]; do
+  echo "Waiting {{ .Values.job.wait }}s for postgres server, $((RETRIES--)) remaining attempts..."
+  sleep {{ .Values.job.wait }}
+done
+if [ ${RETRIES} -eq "0" ]; then
+  echo "Maximum wait attempts exceeded, aborting".
+  exit 1;
+fi
+
+set -e
+for script in *.sh; do
+  echo "**** execute script ${script}"
+  ./${script}
+done
+

postgresql/templates/_helpers.tpl

@@ -0,0 +1,62 @@
+{{/*
+Expand the name of the chart.
+*/}}
+{{- define "postgresql.name" -}}
+{{- default .Chart.Name .Values.nameOverride | trunc 63 | trimSuffix "-" }}
+{{- end }}
+
+{{/*
+Create a default fully qualified app name.
+We truncate at 63 chars because some Kubernetes name fields are limited to this (by the DNS naming spec).
+If release name contains chart name it will be used as a full name.
+*/}}
+{{- define "postgresql.fullname" -}}
+{{- if .Values.fullnameOverride }}
+{{- .Values.fullnameOverride | trunc 63 | trimSuffix "-" }}
+{{- else }}
+{{- $name := default .Chart.Name .Values.nameOverride }}
+{{- if contains $name .Release.Name }}
+{{- .Release.Name | trunc 63 | trimSuffix "-" }}
+{{- else }}
+{{- printf "%s-%s" .Release.Name $name | trunc 63 | trimSuffix "-" }}
+{{- end }}
+{{- end }}
+{{- end }}
+
+{{/*
+Create chart name and version as used by the chart label.
+*/}}
+{{- define "postgresql.chart" -}}
+{{- printf "%s-%s" .Chart.Name .Chart.Version | replace "+" "_" | trunc 63 | trimSuffix "-" }}
+{{- end }}
+
+{{/*
+Common labels
+*/}}
+{{- define "postgresql.labels" -}}
+helm.sh/chart: {{ include "postgresql.chart" . }}
+{{ include "postgresql.selectorLabels" . }}
+{{- if .Chart.AppVersion }}
+app.kubernetes.io/version: {{ .Chart.AppVersion | quote }}
+{{- end }}
+app.kubernetes.io/managed-by: {{ .Release.Service }}
+{{- end }}
+
+{{/*
+Selector labels
+*/}}
+{{- define "postgresql.selectorLabels" -}}
+app.kubernetes.io/name: {{ include "postgresql.name" . }}
+app.kubernetes.io/instance: {{ .Release.Name }}
+{{- end }}
+
+{{/*
+Create the name of the service account to use
+*/}}
+{{- define "postgresql.serviceAccountName" -}}
+{{- if .Values.serviceAccount.create }}
+{{- default (include "postgresql.fullname" .) .Values.serviceAccount.name }}
+{{- else }}
+{{- default "default" .Values.serviceAccount.name }}
+{{- end }}
+{{- end }}

postgresql/templates/job/job.yaml

@@ -0,0 +1,74 @@
+{{- if .Values.job.enabled }}
+---
+apiVersion: "batch/v1"
+kind: "Job"
+metadata:
+  name: "{{ include "postgresql.fullname" . }}-bootstrap"
+  labels:
+    {{- include "postgresql.labels" . | nindent 4 }}
+  annotations:
+    "helm.sh/hook": "post-install,post-upgrade"
+    "helm.sh/hook-delete-policy": "before-hook-creation,hook-succeeded"
+spec:
+  backoffLimit: 4
+  template:
+    metadata:
+      {{- with .Values.podAnnotations }}                                                                                                             
+      annotations:                                                                                                                                   
+        {{- toYaml . | nindent 8 }}                                                                                                                  
+      {{- end }}                                                                                                                                     
+      labels:                                                                                                                                        
+        {{- include "postgresql.selectorLabels" . | nindent 8 }}
+    spec:
+      restartPolicy: Never
+      {{- with .Values.imagePullSecrets }}
+      imagePullSecrets:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+      serviceAccountName: {{ include "postgresql.serviceAccountName" . }}
+      securityContext:
+        {{- toYaml .Values.podSecurityContext | nindent 8 }}
+      containers:
+        - name: "psql"
+          securityContext:                                                                                                                           
+            {{- toYaml .Values.securityContext | nindent 12 }}                                                                                       
+          image: "{{ .Values.image.registry }}/{{ .Values.image.repository }}:{{ .Values.image.tag | default .Chart.AppVersion }}"                   
+          imagePullPolicy: {{ .Values.image.pullPolicy }}
+          env:
+            - name: "PGHOST"
+              value: {{ include "postgresql.fullname" . | quote }}
+            - name: "PGPORT"
+              value: {{ .Values.service.port | quote }}
+            - name: "PGUSER"
+              value: {{ .Values.postgres.user | quote }}
+            - name: "PGPASSWORD"
+              value: {{ .Values.postgres.password | quote }}
+          command:
+            - "/bin/sh"
+            - "-c"
+            - "cd /bootstrap/ && ./_run"
+          resources:                                                                                   
+            {{- toYaml .Values.resources | nindent 12 }}
+          volumeMounts:
+            - mountPath: "/bootstrap/"
+              name: "bootstrap"
+              readOnly: true
+      {{- with .Values.nodeSelector }}
+      nodeSelector:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+      {{- with .Values.affinity }}
+      affinity:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+      {{- with .Values.tolerations }}
+      tolerations:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+      volumes:
+        - name: "bootstrap"
+          secret:
+            secretName: {{ include "postgresql.fullname" . }}-job
+            defaultMode: 0550
+{{- end }}
+

postgresql/templates/job/secret.yaml

@@ -0,0 +1,16 @@
+{{- if .Values.job.enabled }}
+---
+apiVersion: "v1"
+kind: "Secret"
+metadata:
+  name: {{ include "postgresql.fullname" . }}-job
+  labels:
+    {{- include "postgresql.labels" . | nindent 4 }}
+stringData:
+  _run: |-
+    {{- tpl (.Files.Get "files/_run") . | nindent 4 }}
+  10-init-user.sh: |-
+    {{- tpl (.Files.Get "files/10-init-user.sh") . | nindent 4 }}
+  20-init-db.sh: |-
+    {{- tpl (.Files.Get "files/20-init-db.sh") . | nindent 4 }}
+{{- end }}

postgresql/templates/service.yaml

@@ -0,0 +1,15 @@
+apiVersion: v1
+kind: Service
+metadata:
+  name: {{ include "postgresql.fullname" . }}
+  labels:
+    {{- include "postgresql.labels" . | nindent 4 }}
+spec:
+  type: {{ .Values.service.type }}
+  ports:
+    - port: {{ .Values.service.port }}
+      targetPort: postgresql
+      protocol: TCP
+      name: postgresql
+  selector:
+    {{- include "postgresql.selectorLabels" . | nindent 4 }}

postgresql/templates/serviceaccount.yaml

@@ -0,0 +1,12 @@
+{{- if .Values.serviceAccount.create -}}
+apiVersion: v1
+kind: ServiceAccount
+metadata:
+  name: {{ include "postgresql.serviceAccountName" . }}
+  labels:
+    {{- include "postgresql.labels" . | nindent 4 }}
+  {{- with .Values.serviceAccount.annotations }}
+  annotations:
+    {{- toYaml . | nindent 4 }}
+  {{- end }}
+{{- end }}

postgresql/templates/statefulset.yaml

@@ -0,0 +1,116 @@
+apiVersion: apps/v1
+kind: StatefulSet
+metadata:
+  name: {{ include "postgresql.fullname" . }}
+  labels:
+    {{- include "postgresql.labels" . | nindent 4 }}
+spec:
+  replicas: 1
+  serviceName: {{ include "postgresql.fullname" . }}-headless
+  selector:
+    matchLabels:
+      {{- include "postgresql.selectorLabels" . | nindent 6 }}
+  template:
+    metadata:
+      {{- with .Values.podAnnotations }}
+      annotations:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+      labels:
+        {{- include "postgresql.selectorLabels" . | nindent 8 }}
+    spec:
+      {{- with .Values.imagePullSecrets }}
+      imagePullSecrets:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+      serviceAccountName: {{ include "postgresql.serviceAccountName" . }}
+      securityContext:
+        {{- toYaml .Values.podSecurityContext | nindent 8 }}
+      containers:
+        - name: {{ .Chart.Name }}
+          securityContext:
+            {{- toYaml .Values.securityContext | nindent 12 }}
+          image: "{{ .Values.image.registry }}/{{ .Values.image.repository }}:{{ .Values.image.tag | default .Chart.AppVersion }}"
+          imagePullPolicy: {{ .Values.image.pullPolicy }}
+          env:
+            - name: "POSTGRES_PASSWORD"
+              value: {{ .Values.postgres.password | quote }}
+            - name: "POSTGRES_USER"
+              value: {{ .Values.postgres.user | quote }}
+            - name: "PGPORT"
+              value: {{ .Values.service.port | quote }}
+            - name: "PGDATA"
+              value: "/var/lib/postgresql/data"
+          ports:
+            - name: postgresql
+              containerPort: {{ .Values.service.port }}
+              protocol: TCP
+          livenessProbe:
+            exec:
+              command:
+                - /bin/sh
+                - -c
+                - exec pg_isready -U {{ .Values.postgres.user | quote }} -h 127.0.0.1 -p {{ .Values.service.port }}
+          readinessProbe:
+            exec:
+              command:
+                - /bin/sh
+                - -c
+                - exec pg_isready -U {{ .Values.postgres.user | quote }} -h 127.0.0.1 -p {{ .Values.service.port }}
+          resources:
+            {{- toYaml .Values.resources | nindent 12 }}
+          volumeMounts:
+            - name: "data"
+              mountPath: "/var/lib/postgresql/data"
+      {{- with .Values.nodeSelector }}
+      nodeSelector:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+      {{- with .Values.affinity }}
+      affinity:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+      {{- with .Values.tolerations }}
+      tolerations:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+      volumes:
+        - name: "data"
+          {{- if .Values.persistence.hostPath }}
+          hostPath:
+            type: Directory
+            path: {{ .Values.persistence.hostPath | quote }}
+          {{- else if .Values.persistence.enabled }}
+          persistentVolumeClaim:
+            {{ if .Values.persistence.existingClaim }}
+            claimName: {{ .Values.persistence.existingClaim }}
+            {{- else }}
+            claimName: {{ include "postgresql.fullname" . }}-data
+            {{- end }}
+          {{- else }}
+          emptyDir: {}
+          {{- end }}
+  {{- if and .Values.persistence.enabled (not .Values.persistence.hostPath) (not .Values.persistence.existingClaim) }}
+  volumeClaimTemplates:
+    - metadata:
+        name: data
+        labels:
+          {{- include "postgresql.labels" . | nindent 8 }}
+        {{- with .Values.persistence.annotations }}
+        annotations:
+          {{ toYaml . | indent 8 }}
+        {{- end }}
+      spec:
+        accessModes:
+          - {{ .Values.persistence.accessMode | quote }}
+        resources:
+          requests:
+            storage: {{ .Values.persistence.size | quote }}
+        {{- with .Values.persistence.storageClass }}
+        {{-  if (eq "-" .) }}
+        storageClassName: ""
+        {{-  else }}
+        storageClassName: {{ . | quote }}
+        {{-  end }}
+        {{- end }}
+  {{- end }}

postgresql/values.yaml

@@ -0,0 +1,115 @@
+# Default values for postgresql.
+# This is a YAML-formatted file.
+# Declare variables to be passed into your templates.
+
+image:
+  registry: docker.io
+  repository: postgres
+  pullPolicy: IfNotPresent
+  # Overrides the image tag whose default is the chart appVersion.
+  tag: ""
+
+imagePullSecrets: []
+nameOverride: ""
+fullnameOverride: ""
+
+serviceAccount:
+  # Specifies whether a service account should be created
+  create: false
+  # Annotations to add to the service account
+  annotations: {}
+  # The name of the service account to use.
+  # If not set and create is true, a name is generated using the fullname template
+  name: ""
+
+podAnnotations: {}
+
+podSecurityContext: {}
+  # fsGroup: 2000
+
+securityContext: {}
+  # capabilities:
+  #   drop:
+  #   - ALL
+  # readOnlyRootFilesystem: true
+  # runAsNonRoot: true
+  # runAsUser: 1000
+
+service:
+  type: ClusterIP
+  port: 5432
+
+resources: {}
+  # We usually recommend not to specify default resources and to leave this as a conscious
+  # choice for the user. This also increases chances charts run on environments with little
+  # resources, such as Minikube. If you do want to specify resources, uncomment the following
+  # lines, adjust them as necessary, and remove the curly braces after 'resources:'.
+  # limits:
+  #   cpu: 100m
+  #   memory: 128Mi
+  # requests:
+  #   cpu: 100m
+  #   memory: 128Mi
+
+nodeSelector: {}
+
+tolerations: []
+
+affinity: {}
+
+## Enable persistence using Persistent Volume Claims
+## ref: http://kubernetes.io/docs/user-guide/persistent-volumes/
+##
+persistence:
+  enabled: true
+  annotations: {}
+  ## Persistent Volume Storage Class
+  ## If defined, storageClassName: <storageClass>
+  ## If set to "-", storageClassName: "", which disables dynamic provisioning
+  ## If undefined (the default) or set to null, no storageClassName spec is
+  ##   set, choosing the default provisioner.  (gp2 on AWS, standard on
+  ##   GKE, AWS & OpenStack)
+  ##
+  # storageClass: "-"
+
+  ## A manually managed Persistent Volume and Claim
+  ## Requires persistence.enabled: true
+  ## If defined, PVC must be created manually before volume will be bound
+  # existingClaim:
+
+  ## Do not create an PVC, direct use hostPath in Pod
+  # hostPath: 
+  accessMode: ReadWriteOnce
+  size: 1Gi
+
+# PostgreSQL configuration.
+postgres:
+  # -- Database user.
+  user: "postgres"
+  # -- Database password.
+  password: "SUPERSTRONGPW"
+
+
+# This job bootstrap the database server with databases and users.
+job:
+  # -- Enable database bootstrapping.
+  enabled: true
+  # -- Amount of retries while waiting for postgresql server is available.
+  retries: 60
+  # -- Time to wait in each wait in each iteration until postgresql server is available.
+  wait: 5
+  # -- Bootstrap users into postgresql server. When users already exists, they will stay untouched.
+  #
+  # users:
+  #   username: RandomPassword0#"
+  users: {}
+
+  # -- Bootstrap databases into postgresql server. When databases already exists, they will stay untouched.
+  #
+  # databases:
+  #  "name_of_database":
+  #    owner: "existing_user_which_will_get_grant"
+  #    additionalParams: "" # Optional
+  databases: {}
+
+