Y80. Chapter 4 Prometheus big factory monitoring system and practice -- Kube state metrics component introduction and monitoring extension (XI)

9.kube-state-metrics Component is introduced

kubernetes-state-metrics： By monitoring API Server Generate status indicators about resource objects , such as Deployment、Node、Pod, It should be noted that kube-state-metrics It's just a simple offer metrics data , It doesn't store these metrics , So we can use it Prometheus To grab the data and store it , The main focus is on some business-related metadata , such as Deploument、Pod、 Copy status, etc , How many have been dispatched replicas？ How many are available now ？; How many? Pod yes running/stopped/terminated state ？;Pod How many times did it restart ？; How many do I have job In operation .

kube-state-metrics (KSM) is a simple service that listens to the Kubernetes API server and generates metrics about the state of the objects. 

Github：https://github.com/kubernetes/kube-state-metrics

https://quay.io/repository/coreos/kube-state-metrics?tag=latest&tab=tags

indicators ：https://xie.infoq.cn/article/9e1fff6306649e65480a96bb1

9.1 Deploy kube-state-metrics

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