Added database helm files

Author: akhil27051999

helm/database/Chart.yaml

@@ -0,0 +1,6 @@
+apiVersion: v2
+name: database
+description: Helm chart for Postgres (student-db)
+type: application
+version: 0.1.0
+appVersion: "15"

helm/database/templates/configmap.yaml

@@ -0,0 +1,9 @@
+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: postgres-config
+  namespace: {{ .Values.namespace }}
+data:
+  POSTGRES_HOST: {{ .Values.config.POSTGRES_HOST | quote }}
+  POSTGRES_PORT: {{ .Values.config.POSTGRES_PORT | quote }}
+  POSTGRES_DB: {{ .Values.config.POSTGRES_DB | quote }}

helm/database/templates/deployment.yaml

@@ -0,0 +1,56 @@
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: postgres
+  namespace: {{ .Values.namespace }}
+spec:
+  replicas: {{ .Values.replicaCount }}
+  selector:
+    matchLabels:
+      app: postgres
+  template:
+    metadata:
+      labels:
+        app: postgres
+    spec:
+      nodeSelector:
+{{ toYaml .Values.nodeSelector | indent 8 }}
+      containers:
+        - name: postgres
+          image: "{{ .Values.image.repository }}:{{ .Values.image.tag }}"
+          imagePullPolicy: {{ .Values.image.pullPolicy }}
+          ports:
+            - containerPort: {{ .Values.service.targetPort }}
+          env:
+            - name: POSTGRES_USER
+              valueFrom:
+                secretKeyRef:
+                  name: {{ .Values.database.secretName }}
+                  key: {{ .Values.database.usernameKey }}
+            - name: POSTGRES_PASSWORD
+              valueFrom:
+                secretKeyRef:
+                  name: {{ .Values.database.secretName }}
+                  key: {{ .Values.database.passwordKey }}
+            - name: POSTGRES_DB
+              valueFrom:
+                configMapKeyRef:
+                  name: postgres-config
+                  key: POSTGRES_DB
+            - name: POSTGRES_HOST
+              valueFrom:
+                configMapKeyRef:
+                  name: postgres-config
+                  key: POSTGRES_HOST
+            - name: POSTGRES_PORT
+              valueFrom:
+                configMapKeyRef:
+                  name: postgres-config
+                  key: POSTGRES_PORT
+          volumeMounts:
+            - name: postgres-storage
+              mountPath: /var/lib/postgresql/data
+      volumes:
+        - name: postgres-storage
+          persistentVolumeClaim:
+            claimName: postgres-pvc

helm/database/templates/pvc.yaml

@@ -0,0 +1,16 @@
+{{- if .Values.persistence.enabled }}
+apiVersion: v1
+kind: PersistentVolumeClaim
+metadata:
+  name: postgres-pvc
+  namespace: {{ .Values.namespace }}
+spec:
+  accessModes:
+    - ReadWriteOnce
+  resources:
+    requests:
+      storage: {{ .Values.persistence.size }}
+  {{- if .Values.persistence.storageClass }}
+  storageClassName: {{ .Values.persistence.storageClass | quote }}
+  {{- end }}
+{{- end }}

helm/database/templates/service.yaml

@@ -0,0 +1,13 @@
+apiVersion: v1
+kind: Service
+metadata:
+  name: {{ .Values.service.name }}
+  namespace: {{ .Values.namespace }}
+spec:
+  selector:
+    app: postgres
+  ports:
+    - protocol: TCP
+      port: {{ .Values.service.port }}
+      targetPort: {{ .Values.service.targetPort }}
+  type: {{ .Values.service.type }}

helm/database/values.yaml

@@ -0,0 +1,32 @@
+namespace: student-api
+
+replicaCount: 1
+
+image:
+  repository: postgres
+  tag: "15"
+  pullPolicy: IfNotPresent
+
+service:
+  name: postgres
+  type: ClusterIP
+  port: 5432
+  targetPort: 5432
+
+config:
+  POSTGRES_HOST: "postgres"
+  POSTGRES_PORT: "5432"
+  POSTGRES_DB: "studentdb"
+
+database:
+  secretName: postgres-secret
+  usernameKey: POSTGRES_USER
+  passwordKey: POSTGRES_PASSWORD
+
+persistence:
+  enabled: true
+  size: 1Gi
+  storageClass: ""   # set if you want a specific storageClass
+
+nodeSelector:
+  type: database