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Update kube-prometheus-on-kubeadm.md

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In kubeadm 1.10 (and perhaps earlier versions, not sure), ctrl-mgr and scheduler pods' label key is `component=` rather than `k8s-app=`, which is the selector key used for kube-prometheus exporters for these components.
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naseemkullah
2018-04-15 02:01:30 -04:00
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docs/kube-prometheus-on-kubeadm.md
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@@ -42,7 +42,7 @@ schedulerExtraArgs:
address: 0.0.0.0 address: 0.0.0.0
``` ```
Notice the `schedulerExtraArgs` and `controllerManagerExtraArgs`. This exposes the `kube-controller-manager` and `kube-scheduler` services to the rest of the cluster. Notice the `schedulerExtraArgs` and `controllerManagerExtraArgs`. This exposes the `kube-controller-manager` and `kube-scheduler` services to the rest of the cluster. If you have kubernetes core components as pods in the kube-system namespace, ensure that the `kube-prometheus-exporter-kube-scheduler` and `kube-prometheus-exporter-kube-controller-manager` services' `spec.selector` values match those of pods.
In addition, we will be using `node-exporter` to monitor the `cAdvisor` service on all the nodes. This, however requires a change to the `kubelet` service on the master as well as all the nodes. According to the Kubernetes documentation In addition, we will be using `node-exporter` to monitor the `cAdvisor` service on all the nodes. This, however requires a change to the `kubelet` service on the master as well as all the nodes. According to the Kubernetes documentation