Prometheus Notes

PromQL

node exporter:

node_memory_MemAvailable_bytes{job=~"myjob.*"} / on ( instance ) node_memory_MemTotal_bytes{job=~"myjob.*"}

node_memory_MemFree_bytes{job=~"myjob.*"} / on ( instance ) node_memory_MemTotal_bytes{job=~"myjob.*"}

sum(kube_pod_container_resource_requests_cpu_cores) / sum(kube_node_status_capacity_cpu_cores) * 100

topk(
10,
count({job="prometheus"}) by (__name__)
)

resources

https://timber.io/blog/promql-for-humans/

https://www.weave.works/blog/promql-queries-for-the-rest-of-us/