container.training/slides/k8s/exercise-configmap.md

Exercise — ConfigMaps

• In this exercise, we will use a ConfigMap to store static assets

• While there are some circumstances where this can be useful ...

• ... It is generally not a good idea!

• Once you've read that warning, check the next slide for instructions :)

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Exercise — ConfigMaps

This will use the wordsmith app.

We want to store the static files (served by web) in a ConfigMap.

1. Transform the static directory into a ConfigMap.

   (https://github.com/jpetazzo/wordsmith/tree/master/web/static)

2. Find out where that static directory is located in web.

   (for instance, by using kubectl exec to investigate)

3. Update the definition of the web Deployment to use the ConfigMap.

   (note: fonts and images will be broken; that's OK)

4. Make a minor change in the ConfigMap (e.g. change the text color)