Support Kubernetes

[tadayosi]

#23

Still work in progress. Do not merge.
Initial version done.

[tadayosi]

Now the Online console pod discovery works. Next I'll fix the Integration console.

[tadayosi]

Initial version done.

You can do yarn deploy:k8s to deploy a hawtio-online instance to k8s cluster.

Right now, a Jolokia app needs to disable SSL client auth (i.e. protocol=https,useSslClientAuthentication=false) to get it connected because service-ca is not available for k8s.

@astefanutti Please have a look if you're not on holiday yet.

[tadayosi]

I forgot to add one more step to make it really work on a pure k8s cluster. Currently the nginx-gateway.conf still depends on hawtio-online-tls-proxying secret which should be removed. I'll push one more commit soon.

I intend to make the form-based auth work on both OpenShift and k8s. At this moment, you can try it on OpenShift.

[astefanutti]

Woot!

A Camel K integration running on Minikube and managed by Hawtio:

[astefanutti]

That's awesome!

The major area I see that remains is smoothing the user experience, in terms of configuration and documentation.

For the configuration, I can think of:

• Having a Kustomize configuration for vanilla Kubernetes
• Having an extra overlay for OpenShift (and maybe removing the existing resources at the project root)
• Deciding how to handle HTTPS serving or not:
  • We can go for documenting manual generation of the serving certificate
  • Or for relying on https://cert-manager.io/

For the documentation, I can think of:

• Updating the README to reflect that PR work
• Adding a section on how to create a ServiceAccount and retrieve its token to be used in the form login

[tadayosi]

Thanks for your feedback! I'll tackle the remaining items from your feedback in a separate issue.

[astefanutti]

Thank you for this awesome work!