Finding out disk space of Kubernetes node
This is a total noob Kubernetes question. I have searched for this, but can't seem to find the exact answer. But that may just come down to not having a total understanding of Kubernetes. I have some pods deployed across three nodes, and my questions are simple.
- How do I check the total disk space on a node?
- How do I see how much of that space each pod is taking up?
Answer
For calculating total disk space you can use
kubectl describe nodes
from there you can grep ephemeral-storage which is the virtual disk size This partition is also shared and consumed by Pods via emptyDir volumes, container logs, image layers and container writable layers
If you are using Prometheus you can calculate with this formula
sum(node_filesystem_size_bytes)