[Kubernetes] Check pods cpu/memory usage without Third Party ?

Bài này chỉ cách check ram/cpu mà pod đang sử dụng.

https://medium.ninja/@sudharsansadasivam/how-to-check-pods-cpu-memory-usage-without-third-party-895c68da983a

kubectl top pod podname --namespace=default

error: Metrics not available for pod default/podname

Check pods cpu/memory usage without installing any third party tool then you can get memory and cpu usage of pod from group.

1. Go to pod’s exec mode kubectl exec -it pod_name -- /bin/bash
2. Run cat /sys/fs/cgroup/cpu/cpuacct.usage for cpu usage
3. Run cat /sys/fs/cgroup/memory/memory.usage_in_bytes for memory usage.