Show metrics for cluster (all nodes aggregated)

[ahmetb]

Thanks for implementing kubetop, I've been personally meaning to write it myself for a while.

What I had in mind separately was to aggregate sum of all nodes in the cluster and show CPU/memory metrics of an entire cluster. Currently I would have to sum all the numbers and do the math myself to find out overall cluster utilization.

I got this idea from Google Container Engine as in GKE we list the cluster as total resources (e.g. Total cores: 24 vCPUs, Total memory 84.00 GB) and it would be really cool to see how much of the cluster I am utilizing currently.

[exarkun]

I like this idea. I figure there can be different display modes, selected via a command line option or a keystroke inside the app.