readme.md

Services

How it works:

Create a new deployment:

kubectl apply -f 3.service/deployment.yaml

Cluster IP Service

Create the cluster ip service (which is the default type):

kubectl apply -f 3.service/service-clusterip.yaml

Get the ip of the newly created service:

kubectl get svc

In a separate terminal, get a shell inside the cluster and lets contact the above web app via the service:

kubectl run -it alpine-svc --image=alpine -- /bin/sh

Inside the pod shell, the following commands

apk add curl

curl http://<svc-ip>:3001

curl http://<pod-ip>:3000/callforpapers

curl http://go-api-demo-clusterip:3000/callforpapers

curl http://go-api-demo-clusterip.liviu-costea:3000/callforpapers

Load Balancer Service

Create the LoadBalancer service:

kubectl apply -f 3.service/service-lb.yaml

Wait for the .status.loadBalancer to show when it is ready:

kubectl get svc go-api-demo-lb -o yaml

Now we can check the load balancer in our azure portal

Once we delete the service, the load balancer is also deleted:

kubectl delete svc go-api-demo-lb

We can see the events generated by all our actions, to see what happened to the Load Balancer:

kubectl get events --sort-by=.metadata.creationTimestamp