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What is the query? Or do you use some existing dashboard? We use these ourselves and they are correct https://github.com/SigNoz/dashboards/tree/main/k8s-infra-metrics.

this is just great.. Thank you for sharing this as I can see now what was wrong with my settings. while I was using

k8s_node_memory_usage

it looks like what I was looking for is

k8s_node_memory_working_set

also instead of

k8s_node_memory_available

i should have used

k8s_node_allocatable_memory

Is there any valid documentation to describe the meaning of each metric?

The metrics documentation is available here https://github.com/open-telemetry/opentelemetry-collector-contrib/blob/main/receiver/kubeletstatsreceiver/documentation.md

Thanks for you help! I'll look into it

Which part is not clear?

what is usage an what is working set for example I would assume that usage is what i will get performing

kubectl top nodes

Usage is total memory used (this includes the cache such as page cache etc...); Some part of this memory can be evicted when the kernel gets a request from another process for memory. The working set is the amount of memory required for the process to run. working <= usage.

thanks for this detailed explanation