Add Kubernetes configuration files for people API and PostgreSQL setup

Author: mcqueide

.k8s/api-env.yaml

@@ -0,0 +1,10 @@
+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: api-env
+data:
+  SPRING_PROFILES_ACTIVE: "docker"
+  SPRING_DATASOURCE_URL: "jdbc:postgresql://db:5432/people"
+  SPRING_DATASOURCE_USERNAME: "people"
+  SPRING_DATASOURCE_PASSWORD: "people"
+  JAVA_OPTS: "-XX:+UseG1GC -XX:MaxRAMPercentage=75"

.k8s/deployment.yaml

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+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: people-api
+  labels:
+    app: people-api
+spec:
+  replicas: 3
+  selector:
+    matchLabels:
+      app: people-api
+  template:
+    metadata:
+      labels:
+        app: people-api
+    spec:
+      containers:
+      - name: people-api
+        image: mcqueide/people-api:0656d89
+        ports:
+        - containerPort: 8080
+        
+        resources:
+          requests:
+            memory: "256Mi"
+            cpu: "0.5"
+          limits:
+            memory: "512Mi"
+            cpu: "0.75"
+        
+        envFrom:
+        - configMapRef:
+            name: api-env
+
+        startupProbe:
+          httpGet:
+            path: /actuator/health
+            port: 8080
+          failureThreshold: 30
+          periodSeconds: 10
+
+        readinessProbe:
+          httpGet:
+            path: /actuator/health
+            port: 8080
+          periodSeconds: 10
+
+        livenessProbe:
+          httpGet:
+            path: /actuator/health
+            port: 8080
+          periodSeconds: 20

.k8s/kind.yaml

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+kind: Cluster
+apiVersion: kind.x-k8s.io/v1alpha4
+
+nodes:
+- role: control-plane
+- role: worker
+- role: worker
+- role: worker

.k8s/postgres-deployment.yaml

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+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: people-api-postgres
+  labels:
+    app: people-api-postgres
+spec:
+  selector:
+    matchLabels:
+      app: people-api-postgres
+  template:
+    metadata:
+      labels:
+        app: people-api-postgres
+    spec:
+      containers:
+        - name: db
+          image: postgres:17-alpine3.22
+          ports:
+            - containerPort: 5432
+              name: postgres
+          resources:
+            requests:
+              memory: "256Mi"
+              cpu: "250m"
+            limits:
+              memory: "512Mi"
+              cpu: "500m"
+          env:
+            - name: POSTGRES_DB
+              valueFrom:
+                secretKeyRef:
+                  name: people-api-postgres-secret
+                  key: POSTGRES_DB
+            - name: POSTGRES_USER
+              valueFrom:
+                secretKeyRef:
+                  name: people-api-postgres-secret
+                  key: POSTGRES_USER
+            - name: POSTGRES_PASSWORD
+              valueFrom:
+                secretKeyRef:
+                  name: people-api-postgres-secret
+                  key: POSTGRES_PASSWORD
+          volumeMounts:
+            - name: postgres-storage
+              mountPath: /var/lib/postgresql/data
+          startupProbe:
+            exec:
+              command:
+                - sh
+                - -c
+                - pg_isready -U "$(POSTGRES_USER:-postgres)"
+            failureThreshold: 30
+            periodSeconds: 10
+          readinessProbe:
+            exec:
+              command:
+                - sh
+                - -c
+                - pg_isready -U "$(POSTGRES_USER:-postgres)"
+            periodSeconds: 10
+          livenessProbe:
+            exec:
+              command:
+                - sh
+                - -c
+                - pg_isready -U "$(POSTGRES_USER:-postgres)"
+            periodSeconds: 20
+      volumes:
+        - name: postgres-storage
+          persistentVolumeClaim:
+            claimName: postgres-pvc
+        

.k8s/postgres-pvc.yaml

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+apiVersion: v1
+kind: PersistentVolumeClaim
+metadata:
+  name: postgres-pvc
+spec:
+  accessModes:
+    - ReadWriteOnce
+  resources:
+    requests:
+      storage: 5Gi

.k8s/postgres-secret.yaml

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+apiVersion: v1
+kind: Secret
+metadata:
+  name: people-api-postgres-secret
+type: Opaque
+stringData:
+  POSTGRES_DB: "people"
+  POSTGRES_USER: "people"
+  POSTGRES_PASSWORD: "people"

.k8s/postgres-service.yaml

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+apiVersion: v1
+kind: Service
+metadata:
+  name: db
+spec:
+  selector:
+    app: people-api-postgres
+  type: ClusterIP
+  ports:
+    - port: 5432
+      targetPort: 5432
+      name: postgres

.k8s/service.yaml

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+apiVersion: v1
+kind: Service
+metadata:
+  name: people-api
+spec:
+  selector:
+    app: people-api
+  type: ClusterIP
+  ports:
+    - port: 8080
+      targetPort: 8080
+      name: http