feat(k8s): add postgresql component

Author: themightychris

helm-chart/templates/database/service.yaml

@@ -0,0 +1,16 @@
+apiVersion: v1
+kind: Service
+metadata:
+  name: {{ include "third-places.fullname" . }}-postgresql
+  labels:
+    {{- include "third-places.labels" . | nindent 4 }}
+    app.kubernetes.io/component: postgresql
+spec:
+  selector:
+    {{- include "third-places.selectorLabels" . | nindent 4 }}
+    app.kubernetes.io/component: postgresql
+  type: {{ .Values.postgresql.serviceType }}
+  ports:
+    - name: postgresql
+      port: 5432
+      nodePort: 30432

helm-chart/templates/database/statefulset.yaml

@@ -0,0 +1,95 @@
+apiVersion: apps/v1
+kind: StatefulSet
+metadata:
+  name: {{ include "third-places.fullname" . }}-postgresql
+  labels:
+    {{- include "third-places.labels" . | nindent 4 }}
+    app.kubernetes.io/component: postgresql
+spec:
+  replicas: {{ .Values.postgresql.replicas }}
+  selector:
+    matchLabels:
+      {{- include "third-places.selectorLabels" . | nindent 6 }}
+      app.kubernetes.io/component: postgresql
+  serviceName: postgresql
+  template:
+    metadata:
+      labels:
+        {{- include "third-places.selectorLabels" . | nindent 8 }}
+        app.kubernetes.io/component: postgresql
+      {{- with .Values.postgresql.podAnnotations }}
+      annotations:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+    spec:
+    {{- with .Values.postgresql.imagePullSecrets }}
+      imagePullSecrets:
+      {{ toYaml . | nindent 6 }}
+    {{- end }}
+      containers:
+      - name: postgresql
+        image: {{ .Values.postgresql.image.repository }}:{{ .Values.postgresql.image.tag }}
+        {{- if or .Values.postgresql.config .Values.postgresql.existingSecret }}
+        envFrom:
+        {{- if .Values.postgresql.config }}
+        - configMapRef:
+            name: {{ include "third-places.fullname" . }}-postgresql
+        {{- end }}
+        {{- if .Values.postgresql.existingSecret }}
+        - secretRef:
+            name: {{ .Values.postgresql.existingSecret }}
+        {{- end }}
+        {{- end }}
+        ports:
+        - containerPort: 5432
+          name: postgresql
+        {{- if .Values.postgresql.volumes }}
+        volumeMounts:
+          {{- if .Values.postgresql.volumes.data }}
+          - name: data
+            mountPath: /var/lib/postgresql/data
+            subPath: postgresql-data
+          {{- end }}
+        {{- end }}
+        readinessProbe:
+          tcpSocket:
+            port: 5432
+          initialDelaySeconds: 5
+          periodSeconds: 10
+        livenessProbe:
+          tcpSocket:
+            port: 5432
+          initialDelaySeconds: 15
+          periodSeconds: 20
+
+      {{- with .Values.postgresql.nodeSelector }}
+      nodeSelector:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+
+      {{- with .Values.postgresql.affinity }}
+      affinity:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+
+      {{- with .Values.postgresql.tolerations }}
+      tolerations:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+
+  {{- if .Values.postgresql.volumes }}
+  volumeClaimTemplates:
+    {{- if .Values.postgresql.volumes.data }}
+    - metadata:
+        name: data
+      spec:
+        accessModes:
+          - ReadWriteOnce
+        {{- if .Values.postgresql.volumes.data.storageClassName }}
+        storageClassName: {{ .Values.postgresql.volumes.data.storageClassName }}
+        {{- end }}
+        resources:
+          requests:
+            storage: {{ .Values.postgresql.volumes.data.size }}
+    {{- end }}
+  {{- end }}

helm-chart/templates/deployment.yaml

@@ -4,11 +4,13 @@ metadata:
   name: {{ include "third-places.fullname" . }}
   labels:
     {{- include "third-places.labels" . | nindent 4 }}
+    app.kubernetes.io/component: application
 spec:
   replicas: {{ .Values.replicaCount }}
   selector:
     matchLabels:
       {{- include "third-places.selectorLabels" . | nindent 6 }}
+      app.kubernetes.io/component: application
   template:
     metadata:
       {{- with .Values.podAnnotations }}
@@ -17,6 +19,7 @@ spec:
       {{- end }}
       labels:
         {{- include "third-places.selectorLabels" . | nindent 8 }}
+        app.kubernetes.io/component: application
     spec:
       {{- with .Values.imagePullSecrets }}
       imagePullSecrets:

helm-chart/templates/ingress.yaml

@@ -7,6 +7,7 @@ metadata:
   name: {{ $fullName }}
   labels:
     {{- include "third-places.labels" . | nindent 4 }}
+    app.kubernetes.io/component: application
   {{- with .Values.ingress.annotations }}
   annotations:
     {{- toYaml . | nindent 4 }}

helm-chart/templates/service.yaml

@@ -4,6 +4,7 @@ metadata:
   name: {{ include "third-places.fullname" . }}
   labels:
     {{- include "third-places.labels" . | nindent 4 }}
+    app.kubernetes.io/component: application
 spec:
   type: {{ .Values.service.type }}
   ports:
@@ -13,3 +14,4 @@ spec:
       name: http
   selector:
     {{- include "third-places.selectorLabels" . | nindent 4 }}
+    app.kubernetes.io/component: application

helm-chart/values.yaml

@@ -53,3 +53,20 @@ nodeSelector: {}
 tolerations: []
 
 affinity: {}
+
+postgresql:
+  image:
+    repository: postgres
+    tag: 13
+  imagePullSecrets: {}
+  replicas: 1
+  volumes:
+    data:
+      size: 5Gi
+  existingSecret: postgresql
+  config: {}
+  podAnnotations: {}
+  nodeSelector: {}
+  affinity: {}
+  tolerations: []
+  serviceType: ClusterIP