README.md

Exercise 4 - Scaling in and out

Scale the number of Hello World service pods

1. Scale the number of replicas of your Hello World service by running the following commands.

   kubectl get deployment
   
   NAME                    DESIRED   CURRENT   UP-TO-DATE   AVAILABLE   AGE
   helloworld-service-v1   1         1         1            1           1m

   kubectl scale deployment helloworld-service-v1 --replicas=4

   kubectl get deployment
   
   NAME                    DESIRED   CURRENT   UP-TO-DATE   AVAILABLE   AGE
   helloworld-service-v1   4         4         4            4           1m

   kubectl get pods
   
   NAME                          READY     STATUS    RESTARTS   AGE
   helloworld-service-v1-...    1/1       Running   0          1m
   helloworld-service-v1-...    1/1       Running   0          1m
   helloworld-service-v1-...    1/1       Running   0          1m
   helloworld-service-v1-...    1/1       Running   0          2m

2. Scale the deployment back down.

   kubectl scale deployment helloworld-service-v1 --replicas=1

Continue to Exercise 5 - Installing Istio