Is there any kubectl command to see how much RAM (e.g. GB) has the entire cluster?
Basically I would like to get the sum of all the RAM of all the nodes in the cluster.
The command would be useful to understand the "size" of the Kubernetes cluster.
You can install view-utilization kubectl plugin with:
kubectl krew install view-utilization
Then you can run:
kubectl view-utilization -h
...and you should look for values under "Alloc" columns:
Resource Req %R Lim %L Alloc Sched Free
CPU 3.7 6% 4.3 7% 60 57 56
Memory 5.4G 2% 7.9G 3% 237G 232G 229G