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3. Codespaces

Create Codespace#

Click to open Codespaces for this lab repository:

Open in GitHub Codespaces

Codespace Configuration

  • Branch
    • select the main branch
  • Dev container configuration
    • select Enablement on codespaces template
  • Machine type
    • select 4-core
  • Region
    • select any region, preferably one closest to your Dynatrace tenant

Wait for Codespace#

We know your time is very valuable. This codespace takes around 7-10 minutes to be fully operational. A local Kubernetes (kind) cluster monitored by Dynatrace will be configured and in it a sample application, Astronomy Shop, will be deployed. To make your experience better, we are also installing and configuring tools like:

k9s kubectl helm node jq python3 gh

Explore Codespace#

Your Codespace has now deployed the following resources:

  • A local Kubernetes (kind) cluster monitored by Dynatrace, with some pre-deployed apps that will be used later in the demo.

  • After a couple of minutes, you'll see this screen in your codespaces terminal. It contains the links to the locally exposed labguide and the UI of the application which we will be doing our hands-on training with.

Sample output: Codespaces finish

Tips & Tricks#

We want to boost your learning and try to make your experience as smooth as possible with Dynatrace trainings. Your Codespaces have a couple of convenience features added.

Show the greeting#

In the terminal, there are functions loaded for your convenience. By creating a new Terminal the Greeting will be shown that includes the links to the exposed apps, the Github pages, the Github Repository, the Dynatrace Tenant that is bound to this devcontainer and some of the tools installed.

You can create a new Terminal directly in VSCode, type zsh or call the function printGreeting and that will print the greeting with the most relevant information.

The client kubectl and k9sare configured so you can navigate in your local Kubernetes like butter. k9s

Exposing the apps to the public#

The apps MKdocs and Astronomy Shop are being exposed in the devcontainer to your localhost. If you want to make the endpoints public accesible, just go to the ports section in VsCode, right click on them and change the visibility to public.

Troubleshooting#

Astronomy Shop#

If you encounter problems with the Astronomy Shop app deployed in the astronomy-shop namespace, recycle the pods and expose the app.

Recycle pods: 

kubectl delete pods -n astronomy-shop --field-selector="status.phase=Running"

Expose app: 

exposeAstronomyShop

Continue#