Kubernetes cannot access grafana and prometheus fron Google cloud platform - docker

Question

I have followed this link to install Grafana/Prometheus in Google cloud kubernetes. I hope it is deployed successfully please find the following response for reference,
Service Created successfully :
kubectl --namespace=monitoring get services
NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE
grafana NodePort 10.27.249.8 <none> 3000:32703/TCP 1h
prometheus NodePort 10.27.249.233 <none> 9090:31939/TCP 1h
Namespace created successfully :
kubectl get namespaces
NAME STATUS AGE
default Active 19h
kube-public Active 19h
kube-system Active 19h
monitoring Active 1h
PODS response :
kubectl --namespace=monitoring get pods
NAME READY STATUS RESTARTS AGE
grafana-1323121529-8614m 1/1 Running 0 1h
node-exporter-lw8cr 0/1 CrashLoopBackOff 17 1h
node-exporter-nv85s 0/1 CrashLoopBackOff 17 1h
node-exporter-r2rfl 0/1 CrashLoopBackOff 17 1h
prometheus-3259208887-x2zjc 1/1 Running 0 1h
Now i am trying to expose the external-Ip for Grafana but i couldn't keep on getting following exception "Error from server (AlreadyExists): services "prometheus" already exists"
kubectl --namespace=monitoring expose deployment/prometheus --type=LoadBalancer
Error from server (AlreadyExists): services "prometheus" already exists
Edited
kubectl -n monitoring edit service prometheus
Edit cancelled, no changes made.

Answer 1

As you have already deployed the Prometheus service manifest file in the monitoring namespace. However, you are trying to deploy a service with the same name at the same namespace.That's not acceptable As Two Service cannot co-exist in the same namespace with same name.
Solutions for your problem
I would use the following command to edit the already deployed Service.
kubectl -n monitoring edit service prometheus
Then your favourite text editor would pop up, you just need to update
type: LoadBalancer
Basically, your service will be edited.
Edited
If you are not able to use the above command, then you do following steps :
you need to edit the Prometheus service manifest file and update it with type: LoadBalancer.
Now you need to apply kubectl apply -f prometheus-service.yaml