kubernetes-resume-challenge

.github/workflows/deploy.yml

@@ -109,7 +109,4 @@ 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 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
+      kubectl apply -f ecom-web-svc.yml

README.md

@@ -98,9 +98,47 @@ docker run -d —network some-network —name ecom-web -p 8080:80 ecom-web:v1
 
 ![Wesbite-Rollback-Update](./images/website-rollback.png)
 
+
+## Implement Liveness and Readiness Probes
+
+## Implement Persistent Storage
+- Defined [PersistentVolumeClaim](./kubernetes/mariadb-pvc.yml), [PersistentVolume](./kubernetes/mariadb-pv.yml) and [StorageClass](./kubernetes/storage-class.yml) for MariaDB Storage needs
+
 ## 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)
+
+![Kubernetes-Metrics-Server](./images/metrics-server.png)
+
+- Created a [HorizontalPodAutoscaler Deployment/Service](./kubernetes/ecom.yml)
+
+![Ecom-Server](./images/ecom.png)
+
+- Apply HPA: `kubectl autoscale deployment ecom-web --cpu-percent=50 --min=2 --max=10`
+
+![HPA](./images/ecom-web-autoscale.png)
+
+-  Observe HPA: `kubectl get hpa`
+
+![Observe-HPA](./images/observe-hpa.png)
+
+- See how Autoscaler reacts by increasing load; Using Load-Generator:`kubectl run -i --tty load-generator --rm --image=busybox:1.28 --restart=Never -- /bin/sh -c "while sleep 0.01; do wget -q -O- http://php-apache; done"`, Using Apache Bench: `alias ab='kubectl run test-load --rm --tty -i --restart='Never' --image devth/alpine-bench --command -- /go/bin/main'`,
+`ab -n 10000 -c 900 -s 300 https://my.site123.com/(replace URL with your ecom-web service)`
+
+![Increase Load](./images/increase-load.png)
+
+- Monitor Autoscaling: `kubectl get hpa ecom-web --watch`, high CPU load and more replicas
+
+![Monitor HPA](./images/monitor-hpa.png)
+
+- Monitor Deployment: `kubectl get deployment ecom-web`
+
+![Monitor Deployment](./images/monitor-deployment.png)
+
+- Stop generating load: Terminate the `busybox` load generation by typing `<Ctrl> + C`
+- Verify the result state: `kubectl get hpa ecom-web --watch`
+
+![Result State](./images/result-state.png)
+
 
 ## Extras
 - [HorizontalPodAutoscaler Walkthrough](https://kubernetes.io/docs/tasks/run-application/horizontal-pod-autoscale-walkthrough/)

kubernetes/README.md

@@ -90,9 +90,5 @@ kubectl apply -f ecom-web-svc.yml
 ```
 
 ```sh
-kubectl apply -f php-apache-svc.yml 
-```
-
-```sh
-kubectl apply -f php-apache.yml 
+kubectl apply -f ecom.yml 
 ```

kubernetes/php-apache-svc.yml → kubernetes/ecom.yml

@@ -1,23 +1,35 @@
 apiVersion: apps/v1
 kind: Deployment
 metadata:
-  name: php-apache
+  name: ecom-hpa
 spec:
   selector:
     matchLabels:
-      run: php-apache
+      run: ecom-hpa
   template:
     metadata:
       labels:
-        run: php-apache
+        run: ecom-hpa
     spec:
       containers:
-      - name: php-apache
+      - name: ecom-hpa
         image: registry.k8s.io/hpa-example
         ports:
         - containerPort: 80
         resources:
           limits:
             cpu: 500m
           requests:
-            cpu: 200m
+            cpu: 200m
+---
+apiVersion: v1
+kind: Service
+metadata:
+  name: ecom-svc
+  labels:
+    run: ecom-svc
+spec:
+  ports:
+  - port: 80
+  selector:
+    run: ecom-hpa