Lander

A simple kubernetes (cluster) landing page

search all the Ingresses in the current context cluster
show any with the appropriate Annotations
simple vuejs UI to query the golang server
there is a lightweight cache system to ensure k8s API chatter is limited
Identicons themed with the colours you decide (see: -hex when deploying lander)
Unique "identicon" favicons generated against hostname (nicer+predictable bookmarks for multiple k8s clusters)

Runtime flags

  -annotationBase string
    	The base of the annotations used for lander. e.g. lander.doddle.tech for annotations like lander.doddle.tech/show (default "lander.doddle.tech")
  -clusterFQDN string
    	The cluster this lander is operating in. Used for display and identicon purposes only. (default "k8s.example.com")
  -clusters string
    	comma seperated list of clusters (default "cluster1.example.com,cluster2.example.com")
  -color string
    	Main color scheme (See: https://vuetifyjs.com/en/styles/colors/#material-colors) (default "light-blue lighten-2")
  -debug
    	debug
  -hex string
    	identicon color, hex string, eg #112233, #123, #bAC (default "#26c5e8")
  -labels string
    	comma seperated list of node labels you care about (default "kubernetes.io/role,node.kubernetes.io/instance-type,node.kubernetes.io/instancegroup,topology.kubernetes.io/zone")

local development

To run or develop lander follow the next steps:

running the VueJS front-end

The frontend listens on :8080 and will proxy traffic -> localhost:8000 in development mode.

Simply:

cd frontend
npm i --from-lockfile
npm run serve

Good.. now that the front-end is running.. launch the backend:

running the backend

The backend listens on :8000 and will read assets from a relative path of: ./frontend/dist

The golang app supports a few flags..:

-annotationBase the base of the annotations to use. Appended with /show to figure the annotations above
-clusterFQDN The cluster this lander is operating in. Used for display and identicon purposes only.
-hex the hex colour to be used for the identicon.. EG: #26c5e8, #123, #b2C
-color the colorscheme (vuetify) to be handed to the frontend.. See: material-colors

If you run this locally on your computer it will auto-detect your $KUBECONFIG and use the current context.

go run .

curl it and see if u get any endpoints detected

curl localhost:8000/v1/endpoints

NOTE: opening :8000 in your web browser won't render anything until after you've run npm run build in the frontend. For local-development of the UI we recommend using the VueJS steps above.

Adding a link

You'll need to add an annotation to an ingress to see it in the "Links" section

For example.. In the following example we add:

the annotation lander.doddle.tech/show="true"
to an ingress called prometheus
in the namespace monitoring

export NAMESPACE=monitoring
export INGRESS=prometheus
kubectl annotate \
  -n $NAMESPACE \
  ingress/$INGRESS \
  lander.doddle.tech/show="true" --overwrite

Landers cache may not make the result show up immediately, but if you restart the golang api or wait a minute you should be able to see a link now

TODOS:

Nice-to-haves/ideas for the future:

allow adding your own icons
more documentation
more tests
as this will live behind oauth2proxy like many other components, we can determine their username/email.. greet them
maybe pull some basic info from RBAC if we're able to determine their github groups (EG hello <persons name>.. you have X namespaces you can play with on this cluster)
some information about cronjobs (or some CRDs potentially)