kubernetes is working now

Signed-off-by: Your Name <[email protected]>

README.md

@@ -89,4 +89,37 @@ Now we can push these images to DockerHub.
 
 ## Use Kubernetes 
 
+### Simple deployment 
 
+make sure you have run the  minikube cluster 
+
+```
+ minikube start  --memory 12000  --cpus 2
+```
+
+Use  `cd  kubernetes/simple`
+
+Then apply the following commands. 
+```
+    kubectl apply -f mongo-deployment.yaml
+    kubectl apply -f mongo-service.yaml
+    kubectl apply -f node-deploy.yaml
+    kubectl apply -f node-service.yaml
+```
+
+Now you can get the address for curl request 
+
+ minikube service nodejs-service --url 
+
+ For example I got `http://192.168.49.2:30707`
+
+ ```
+  curl http://192.168.49.2:30707
+ ```
+
+This shows out app is working as before. 
+
+```
+$ curl http://192.168.49.2:30707/products
+[{"_id":"655a6f85de87398cc510d2e0","name":"xyz","quantity":1,"price":20,"createdAt":"2023-11-19T20:26:45.763Z","updatedAt":"2023-11-19T20:26:45.763Z","__v":0}]
+```

kubernetes/simple/mongo-deployment.yaml

@@ -0,0 +1,19 @@
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: mongo-deployment
+spec:
+  replicas: 1
+  selector:
+    matchLabels:
+      app: mongodb
+  template:
+    metadata:
+      labels:
+        app: mongodb
+    spec:
+      containers:
+        - name: mongodb
+          image: pronoob007/mongo:latest
+          ports:
+            - containerPort: 27017

kubernetes/simple/mongo-service.yaml

@@ -0,0 +1,12 @@
+apiVersion: v1
+kind: Service
+metadata:
+  name: mongo-service
+spec:
+  selector:
+    app: mongodb
+  ports:
+    - protocol: TCP
+      port: 27017
+      targetPort: 27017
+  type: NodePort

kubernetes/simple/node-deploy.yaml

@@ -0,0 +1,24 @@
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: nodejs-deployment
+spec:
+  replicas: 1
+  selector:
+    matchLabels:
+      app: nodejs
+  template:
+    metadata:
+      labels:
+        app: nodejs
+    spec:
+      containers:
+        - name: nodejsapp
+          image: pronoob007/nodejsapp:latest
+          ports:
+            - containerPort: 3000
+          env:
+            - name: MONGO_HOST
+              value: "mongo-service" # Use the service name of the MongoDB deployment
+            - name: MONGO_PORT
+              value: "27017" # MongoDB default port

kubernetes/simple/node-service.yaml

@@ -0,0 +1,12 @@
+apiVersion: v1
+kind: Service
+metadata:
+  name: nodejs-service
+spec:
+  selector:
+    app: nodejs
+  ports:
+    - protocol: TCP
+      port: 3000
+      targetPort: 3000
+  type: NodePort