Prometheus/targets页面 不显示kube-controller-manager kube-scheduler

[logwhee]

Prometheus/targets页面 不显示kube-controller-manager kube-scheduler
请问怎么处理呀？？

[Atharex]

I guess the OP means the kube controller manager and scheduler are not working?

For me that is the case. The kube-prometheus installation picks up the kubelet and api server metrics, but not for the controller manager and scheduler. Alertmanager is showing these 2 warnings:

name: KubeControllerManagerDown
expr: absent(up{job="kube-controller-manager"} == 1)
for: 15m
labels:
severity: critical
annotations:
description: KubeControllerManager has disappeared from Prometheus target discovery.
runbook_url: https://github.com/prometheus-operator/kube-prometheus/wiki/kubecontrollermanagerdown
summary: Target disappeared from Prometheus target discovery.

KubeSchedulerDown (1 active)

name: KubeSchedulerDown
expr: absent(up{job="kube-scheduler"} == 1)
for: 15m
labels:
severity: critical
annotations:
description: KubeScheduler has disappeared from Prometheus target discovery.
runbook_url: https://github.com/prometheus-operator/kube-prometheus/wiki/kubeschedulerdown
summary: Target disappeared from Prometheus target discovery.

Is this a known issue?

[huangweikuna]

• 查看kube-controller-manager kube-scheduler对应的service
  kubectl get svc -n kube-system
  如果不存在则创建。
• 找到ServiceMonitor，查看Service选择标签、名称、协议是否匹配
• 如果是托管到第三方服务，则没有这两个target

希望对你有帮助。

[starcraft66]

@Atharex I'm experiencing the same issue with a fresh install of release 0.7 on a bare metal k8s 1.20 cluster deployed with kubespray.

[paulfantom]

You need to enable gathering metrics from kube-scheduler and kube-controller-manager or disable those alerts.

This should be covered in our docs: https://github.com/prometheus-operator/kube-prometheus#cluster-creation-tools