Kubernetes Metrics Server (KMS)

wikipedia:Kubernetes Metrics Server collects resource metrics from Kubelets and exposes them in Kubernetes apiserver through Metrics API for use by Horizontal Pod Autoscaler (HPA), Vertical Pod Autoscaler (VPA) and kubectl top.

• https://github.com/kubernetes-sigs/metrics-server

Installation

• helm repo add metrics-server https://kubernetes-sigs.github.io/metrics-server/
• helm upgrade --install metrics-server metrics-server/metrics-server
• helm install --set 'args={--kubelet-insecure-tls}' --namespace kube-system metrics-server metrics-server/metrics-server

• kubectl get deployment metrics-server -n kube-system

Related

• CPU, https://kubernetes.io/docs/concepts/configuration/manage-resources-containers/#resource-units-in-kubernetes
• kubectl top
• Kubernetes dashboard
• Kubernetes API Server
• kubectl get pods
• Kube-state-metrics (KSM)
• Prometheus
• https://kubernetes.io/docs/reference/instrumentation/metrics/

See also

• Kubernetes Metrics Server, Kubernetes autoscaling, kubectl top
• Kubernetes autoscaling, HPA, VPA, Karpenter, Kubernetes Autoscaler, kubectl autoscale, Kubernetes Metrics Server (KMS)
• K8s troubleshooting: kubectl logs, kubectl get events -A, kubectl describe pod, Liveness, Readiness, Kubernetes events, Pulling image, OOMKilled, ProbeWarning, Reason, FailedScheduling, errImagePull, ImagePullBackOff, Kubelet conditions: MemoryPressure, DiskPressure, KubeletHasSufficientPID, KubeletReady, kubectl [ debug | attach | exec ]