Update blog-deployment.yaml

Author: krishna2808

K8s/blog-deployment.yaml

@@ -1,241 +1,192 @@
-# 👇 Kubernetes version declaration (optional but helpful for editors)
+# ============================================
+# 1) NAMESPACE
+# ============================================
 apiVersion: v1
 kind: Namespace
 metadata:
   name: blog-namespace
-  # 👆 Create a namespace to logically separate our blog app
-
 ---
-
-# ========================
-# 1️⃣ MYSQL DATABASE
-# ========================
+# ============================================
+# 2) MYSQL - HEADLESS SERVICE
+# ============================================
+apiVersion: v1
+kind: Service
+metadata:
+  name: mysql.blog
+  namespace: blog-namespace
+spec:
+  clusterIP: None             # Headless for StatefulSet
+  selector:
+    app: mysql
+  ports:
+    - port: 3306
+---
+# ============================================
+# 3) MYSQL - STATEFULSET + PVC
+# ============================================
 apiVersion: apps/v1
-kind: Deployment
+kind: StatefulSet
 metadata:
-  name: mysql-blog
-  namespace: blog-namespace   # 👈 deploy inside the same namespace
+  name: mysql
+  namespace: blog-namespace
 spec:
-  replicas: 1                 # one MySQL pod is enough
+  serviceName: mysql.blog      # <-- IMPORTANT (matches service)
+  replicas: 1
   selector:
     matchLabels:
-      app: mysql-blog
+      app: mysql
+
   template:
     metadata:
       labels:
-        app: mysql-blog
+        app: mysql
     spec:
       containers:
         - name: mysql
-          image: mysql:8              # 👈 same image used in Docker Compose
-          env:                        # 👇 environment variables for MySQL
+          image: mysql:8
+          env:
             - name: MYSQL_ROOT_PASSWORD
               value: "password"
             - name: MYSQL_DATABASE
               value: "blog"
           ports:
-            - containerPort: 3306     # expose internal MySQL port
+            - containerPort: 3306
           volumeMounts:
-            - name: mysql-storage
-              mountPath: /var/lib/mysql   # same as docker volume path
-      volumes:
-        - name: mysql-storage
-          persistentVolumeClaim:
-            claimName: mysql-pvc      # 👈 attach a persistent storage claim
-
----
-
-# 🗄️ Persistent Volume Claim for MySQL data
-apiVersion: v1
-kind: PersistentVolumeClaim
-metadata:
-  name: mysql-pvc
-  namespace: blog-namespace
-spec:
-  accessModes:
-    - ReadWriteOnce
-  resources:
-    requests:
-      storage: 1Gi                   # 👈 1GB storage for MySQL data
-
+            - name: mysql-data
+              mountPath: /var/lib/mysql
+
+  volumeClaimTemplates:
+    - metadata:
+        name: mysql-data
+      spec:
+        accessModes: ["ReadWriteOnce"]
+        resources:
+          requests:
+            storage: 2Gi
 ---
-
-# 💡 Service to expose MySQL internally to other pods
-apiVersion: v1
-kind: Service
-metadata:
-  name: mysql-blog-service
-  namespace: blog-namespace
-spec:
-  selector:
-    app: mysql-blog
-  ports:
-    - port: 3306          # service port
-      targetPort: 3306    # container port
-  clusterIP: None         # �� optional for direct DNS resolution (headless service)
-
----
-
-# ========================
-# 2️⃣ BACKEND (Django)
-# ========================
+# ============================================
+# 4) BACKEND (DJANGO) - DEPLOYMENT
+# ============================================
 apiVersion: apps/v1
 kind: Deployment
 metadata:
-  name: backend-blog
+  name: backend
   namespace: blog-namespace
 spec:
   replicas: 1
   selector:
     matchLabels:
-      app: backend-blog
+      app: backend
   template:
     metadata:
       labels:
-        app: backend-blog
+        app: backend
     spec:
       containers:
         - name: backend
-          image: krishna2808/blog_backend:V1   # 👈 use same backend image
+          image: krishna2808/backend-blog:V1
           env:
             - name: DEBUG
               value: "True"
-            - name: DJANGO_DB
-              value: "blog"
             - name: MYSQL_HOST
-              value: "mysql-blog-service"  # 👈 use service name for DB host
+              value: mysql.blog
             - name: MYSQL_NAME
-              value: "mysql"
+              value: blog
             - name: MYSQL_USER
-              value: "root"
+              value: root
             - name: MYSQL_PASSWORD
-              value: "password"
+              value: password
             - name: MYSQL_PORT
               value: "3306"
           ports:
             - containerPort: 8000
-          volumeMounts:
-            - name: backend-data
-              mountPath: /app/backend/      # same as Docker Compose volume
-      volumes:
-        - name: backend-data
-          emptyDir: {}                      # temporary storage (for learning)
-
 ---
-
-# 🔄 Service for backend — exposes Django API to cluster
+# ============================================
+# 5) BACKEND SERVICE (ClusterIP)
+# ============================================
 apiVersion: v1
 kind: Service
 metadata:
-  name: backend-blog-service
+  name: backend-service
   namespace: blog-namespace
 spec:
+  type: ClusterIP
   selector:
-    app: backend-blog
+    app: backend
   ports:
-    - port: 8000           # cluster port
-      targetPort: 8000     # Django port in container
-  type: ClusterIP           # accessible only inside Kubernetes network
-
+    - port: 8000
+      targetPort: 8000
 ---
-
-# ========================
-# 3️⃣ FRONTEND (React)
-# ========================
+# ============================================
+# 6) FRONTEND (REACT) - DEPLOYMENT
+# ============================================
 apiVersion: apps/v1
 kind: Deployment
 metadata:
-  name: frontend-blog
+  name: frontend
   namespace: blog-namespace
 spec:
   replicas: 1
   selector:
     matchLabels:
-      app: frontend-blog
+      app: frontend
   template:
     metadata:
       labels:
-        app: frontend-blog
+        app: frontend
     spec:
       containers:
         - name: frontend
-          image: krishna2808/blog_frontend:V1     # 👈 replace with your frontend image
+          image: krishna2808/frontend-blog:V1
           ports:
             - containerPort: 3000
-          volumeMounts:
-            - name: frontend-data
-              mountPath: /app/frontend/
-      volumes:
-        - name: frontend-data
-          emptyDir: {}                        # demo volume (no persistence)
-
 ---
-
-# 🌐 Service for frontend — to expose React app to browser
+# ============================================
+# 7) FRONTEND SERVICE (ClusterIP)
+# ============================================
 apiVersion: v1
 kind: Service
 metadata:
-  name: frontend-blog-service
+  name: frontend-service
   namespace: blog-namespace
 spec:
+  type: ClusterIP
   selector:
-    app: frontend-blog
+    app: frontend
   ports:
     - port: 3000
       targetPort: 3000
-  type: NodePort                    # 👈 for external access from your machine
-
 ---
-
-# ========================
-# 4️⃣ NGINX (Reverse Proxy)
-# ========================
-apiVersion: apps/v1
-kind: Deployment
+# ============================================
+# 8) INGRESS (Frontend + Backend Routing)
+# ============================================
+apiVersion: networking.k8s.io/v1
+kind: Ingress
 metadata:
-  name: nginx-blog
+  name: blog-ingress
   namespace: blog-namespace
+  annotations:
+    nginx.ingress.kubernetes.io/rewrite-target: /$1
+    nginx.ingress.kubernetes.io/use-regex: "true"
 spec:
-  replicas: 1
-  selector:
-    matchLabels:
-      app: nginx-blog
-  template:
-    metadata:
-      labels:
-        app: nginx-blog
-    spec:
-      containers:
-        - name: nginx
-          image: nginx:alpine             # same image from compose
-          ports:
-            - containerPort: 80
-            - containerPort: 443
-          # You can mount nginx.conf here if needed
-          # volumeMounts:
-          #   - name: nginx-conf
-          #     mountPath: /etc/nginx/conf.d/
-      # volumes:
-      #   - name: nginx-conf
-      #     configMap:
-      #       name: nginx-config
-
----
-
-# 🚪 Service to expose Nginx externally
-apiVersion: v1
-kind: Service
-metadata:
-  name: nginx-blog-service
-  namespace: blog-namespace
-spec:
-  selector:
-    app: nginx-blog
-  ports:
-    - port: 80
-      targetPort: 80
-      nodePort: 30080        # fixed port on your host (optional)
-    - port: 443
-      targetPort: 443
-      nodePort: 30443
-  type: NodePort             # 👈 expose outside Kubernetes cluster
+  rules:
+    - host: blog.local
+      http:
+        paths:
+          # API FIRST
+          - path: /api/?(.*)
+            pathType: Prefix
+            backend:
+              service:
+                name: backend-service
+                port:
+                  number: 8000
+
+          # FRONTEND FALLBACK
+          - path: /?(.*)
+            pathType: Prefix
+            backend:
+              service:
+                name: frontend-service
+                port:
+                  number: 3000