问题
I've set up prometheus to monitor kubernetes metrics by following the prometheus documentation.
A lot of useful metrics now show up in prometheus.
However, I can't see any metrics referencing the status of my pods or nodes.
Ideally - I'd like to be able to graph the pod status (Running, Pending, CrashLoopBackOff, Error) and nodes (NodeReady, Ready).
Is this metric anywhere? If not, can I add it somewhere? And how?
回答1:
The regular kubernetes setup does not expose these metrics - further discussion here.
However, another service can be used to collect these cluster level metrics: https://github.com/kubernetes/kube-state-metrics.
This currently provides node_status_ready and pod_container_restarts which sound like what I want.
回答2:
I don't think such metrics exist.
You have to modify the source code to add them. Take a look at this file on how to register a metric: https://github.com/kubernetes/kubernetes/blob/master/pkg/kubelet/metrics/metrics.go, and take a look at this line on how to record a metric: https://github.com/kubernetes/kubernetes/blob/master/pkg/kubelet/pleg/generic.go#L180
回答3:
I've found that I can monitor these metrics using heapster & snap, which is a plausible workaround for my case. Let me know if that's something you're also using and I'll give you the proper metrics to get this data.
来源：https://stackoverflow.com/questions/39349744/kubernetes-prometheus-metrics-for-running-pods-and-nodes