eduk8s-labs / lab-spring-boot-k8s-getting-started Goto Github PK

It would be better for workshop users if we could disable these

Launched Spring Boot lab from https://hub.prod.eduk8s.io/
I noticed errors in the (Firefox) dev console when I clicked on the link which triggers the Spring Initializr extension in VS Code.

Started lab from https://hub.prod.eduk8s.io
Bottom of the first page

...maybe even turn it into proper checkboxes?

The Initializr extension in the IDE offers two options at the end: "Open" and "Add to Workspace". The "Open" button opens a new workspace, which is a new tab in code-server, and takes you out of the eduk8s lab. Ideally we'd like to simply disable that button. An alternative would be to fix code-server so it doesn't open a new tab, but they have shown themselves to be against that option in the upstream issue tracker.

Improved UX ideas:

• click on button/link in lab notes and open existing file in IDE.
• click on snippet and add it to existing file (e.g. adding a @GetMapping)
• more complex things (e.g. adding a @RestContoller annotation to an existing class, and organizing imports)

From intro:

Spring Boot is a great way to write an application in Java. This workshop shows you how to create a Spring Boot application and run it in Kubernetes with as little fuss and bother as possible. And there's no YAML. To do this we need to do three things:

I suggest removing the bit that says: And there's no YAML.

From lesson page 4:

The small session budget configures limitranger defaults for containers to 256MB memory, which is too small. Deployments fails with the following error:

allocated memory is greater than 256M available for allocation: -XX:MaxDirectMemorySize=10M, -XX:MaxMetaspaceSize=94141K, -XX:ReservedCodeCacheSize=240M, -Xss1M x 250 threads

I suggest tuning this to 1024MB in the workshop.yaml, or figuring out a way to set explicit (higher) limits in the deployment container spec.

see
https://docs.eduk8s.io/en/latest/runtime-environment/workshop-definition.html#resource-budget-for-namespaces

The IDE is more comfortable for developers than the bare terminal, and it's a "one stop shop" for workshop activities. If it's not too expensive to implement, it would be good to have the option to execute command line snippets in the IDE.

Tried this:

<pre class="pastable" data-file="/home/eduk8s/exercises/demo/deployment.yaml" data-yaml-path="spec.template.spec.containers[0]">
...
</pre>

But it didn't do anything. I need to select the element (by index or name or something).