Tekton Pipelines v0.11.0 incompatible with Katacoda k8s clusters about website

[popcor255]

You can use Kubernetes v1.18.0 if you use a Minikube instance. https://www.katacoda.com/courses/kubernetes/launch-single-node-cluster

[AlanGreene]

/assign

[AlanGreene]

https://github.com/katacoda/scenario-examples/tree/master/environments

There's an example creating a custom Kubernetes 1.16 environment, but not sure if that's of any use since it requires a Subscription.

Creating Custom Environments on Katacoda
NOTE: This is only available with a Katacoda Subscription.

Also with Katacoda being acquired by O'Reilly towards the end of last year I don't know if they're accepting new subscriptions outside of the O'Reilly learning platform.

[anneqm]

Note that the Dasbhoard tutorial is now updated to use the previous pipeline version so it is working again.

[skaegi]

@bobcatfish I'd like us to remove the beta blocking tag as for now our tutorials can use 0.10.1 as a workaround. Still leaving this open until Katacoda updates to 1.15 or we find another way.

[skaegi]

/remove-kind beta-blocking

[AlanGreene]

Looks like it might be possible to specify a different kubernetes image version
e.g. https://github.com/javajon/katacoda-courses/blob/8f41fac129365afcd3157344e45affad16521011/kubernetes-fundamentals/playground-1.17/index.json#L29

So it might just be a matter of updating our config like this:

  "backend": {
-    "imageid": "kubernetes",
+    "imageid": "kubernetes:1.17",
    "port": "80"
  }

[ncskier]

Looks like it might be possible to specify a different kubernetes image version
e.g. https://github.com/javajon/katacoda-courses/blob/8f41fac129365afcd3157344e45affad16521011/kubernetes-fundamentals/playground-1.17/index.json#L29

Unfortunately, it looks like Katacoda no longer supports that, or maybe the image id has changed?
The tutorial (https://www.katacoda.com/javajon/courses/kubernetes-fundamentals/playground-1-17) has an error setting up the environment:

You can use Kubernetes v1.18.0 if you use a Minikube instance. https://www.katacoda.com/courses/kubernetes/launch-single-node-cluster

That would be a good workaround if we can't specify a version with the imageid 👍 Are there any limitations to using minikube?

[popcor255]

Things like metrics, ingress, and storage need to be enabled through minikube addons, which is really easy but cause a different dev experience then Kubernetes. There are other resource limiations cause minikube is just one master/worker node. I have tried Tekton on minikube alot and it works perfectly fine.

[popcor255]

Hey! @ncskier Is this still an issue? If so I would love to help! ❤️

[AlanGreene]

Looks like Katacoda finally updated the supported Kubernetes version: https://www.katacoda.community/environments.html#supported-environments

Environment	Implementation Notes	ImageID
Kubernetes Cluster 1.18	2 nodes with kubeadm installed, nothing running. Based on Ubuntu.Designed for teaching how to use Kubernetes from scratch	kubernetes-cluster:1.18
Kubernetes Cluster 1.18 (Pre-configured)	2 node cluster with 1 master, 1 node. Based on Ubuntu.Run launch.sh when the scenario starts to ensure cluster is running.	kubernetes-cluster-running:1.18

The 1.14 images are now deprecated.

Minikube works well for the existing tutorial, but having the extra node on a more complete Kubernetes cluster might be useful for demonstrating some features in new / updated tutorials.

[AlanGreene]

Change ready locally, just need to rebase it after #161 is merged.

Updated all scenarios to use Kubernetes 1.18 and made a few small changes to the Dashboard scenario improved for stability.