https://containerjournal.com/topics/container-management/cluster-monitoring-with-prometheus-operator/ https://kangwoo.kr/2020/06/20/kubernetes-monitoring-3-kube-prometheus-%ec%84%a4%ec%b9%98-%ed%9b%84-%ed%95%b4%ec%95%bc-%ed%95%a0%ec%9d%bc/ https://waspro.tistory.com/588 https://strange-developer.tistory.com/53 https://docs.syseleven.de/metakube/de/metakube-accelerator/building-blocks/observability-monitoring/kube-prometheus-stack |