courselabs/kubernetes

Labs and exercises to help you learn Kubernetes.

Kubernetes Course Labs

Labs and exercises to help you learn Kubernetes.

Live at https://kubernetes.courselabs.co.

kubernetes's Issues

Minikube and metric server

In minikube trying to install metric server from https://kubernetes.courselabs.co/labs/productionizing/ leads to this error:

error: resource mapping not found for name: "v1beta1.metrics.k8s.io" namespace: "" from "labs/productionizing/specs/metrics-server/components-v0.3.6.yaml": no matches for kind "APIService" in version "apiregistration.k8s.io/v1beta1"
ensure CRDs are installed first

Installation using kubectl apply -f https://github.com/kubernetes-sigs/metrics-server/releases/latest/download/components.yaml
leads to this error:
Error from server (ServiceUnavailable): the server is currently unable to handle the request (get nodes.metrics.k8s.io)

Correct way for installation is: minikube addons enable metrics-server

Template format specified but no template given

Hi Elton,

On page https://kubernetes.courselabs.co/labs/nodes/solution.html
When I execute

kubectl get node <your-node> -o go-template=$''

I get

ConfigMap lab: add labels and cleanup section

The Secrets lab follows - make sure it doesn't expect objects to exist from the ConfigMap lab.

Add Windows/PowerShell versions of commands

For JSONPath and Go templates, PowerShell likes more quote marks. To fix in markdown.

Add labels to all the top-level object for cleanup

Done in the later labs, e.g. in Ingress:

---

When you're done after you've tried the lab, you can remove all the objects:

kubectl delete all,secret,ingress,ns -l co.courselabs.k8sfun=ingress

---

Annotate YAML specs

There are notes in the docs, but the YAML should be annotated with comments for key fields.

Table is'nt rendered correctly

I don't see nothing wrong with the syntax but just that you know it doesn't render correctly when published to

https://kubernetes.courselabs.co/labs/services/#use-dns-to-find-the-service