kubernetes-resume-challenge

.github/workflows/deploy.yml

@@ -109,4 +109,7 @@ jobs:
       kubectl apply -f ecom-web-configmap.yml 
       kubectl apply -f ecom-web-config.yml 
       kubectl apply -f ecom-web.yml 
-      kubectl apply -f ecom-web-svc.yml
+      kubectl apply -f ecom-web-svc.yml
+      kubectl apply -f https://github.com/kubernetes-sigs/metrics-server/releases/latest/download/components.yaml
+      kubectl apply -f php-apache-svc.yml
+      kubectl apply -f php-apache.yml

README.md

@@ -96,4 +96,12 @@ docker run -d —network some-network —name ecom-web -p 8080:80 ecom-web:v1
 
 ![Rollback-Update](./images/rollback.png)
 
-![Wesbite-Rollback-Update](./images/website-rollback.png)
+![Wesbite-Rollback-Update](./images/website-rollback.png)
+
+## Autoscaling the application based on CPU usage to handle unpredictable traffic spikes
+- Installed Kubernetes Metrics Server: `kubectl apply -f https://github.com/kubernetes-sigs/metrics-server/releases/latest/download/components.yaml`
+- Created a [HorizontalPodAutoscaler Deployment](./kubernetes/php-apache.yml) and [HorizontalPodAutoscaler Service](./kubernetes/php-apache-svc.yml)
+
+## Extras
+- [HorizontalPodAutoscaler Walkthrough](https://kubernetes.io/docs/tasks/run-application/horizontal-pod-autoscale-walkthrough/)
+- [Kubernetes Metrics Server](https://github.com/kubernetes-sigs/metrics-server)

kubernetes/README.md

@@ -87,4 +87,12 @@ kubectl apply -f ecom-web.yml
 
 ```sh
 kubectl apply -f ecom-web-svc.yml 
+```
+
+```sh
+kubectl apply -f php-apache-svc.yml 
+```
+
+```sh
+kubectl apply -f php-apache.yml 
 ```

kubernetes/php-apache-svc.yml

@@ -0,0 +1,23 @@
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: php-apache
+spec:
+  selector:
+    matchLabels:
+      run: php-apache
+  template:
+    metadata:
+      labels:
+        run: php-apache
+    spec:
+      containers:
+      - name: php-apache
+        image: registry.k8s.io/hpa-example
+        ports:
+        - containerPort: 80
+        resources:
+          limits:
+            cpu: 500m
+          requests:
+            cpu: 200m

kubernetes/php-apache.yml

@@ -0,0 +1,11 @@
+apiVersion: v1
+kind: Service
+metadata:
+  name: php-apache
+  labels:
+    run: php-apache
+spec:
+  ports:
+  - port: 80
+  selector:
+    run: php-apache