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Overview

Purpose

Memphis dashboard is designed to provide a quick snapshot of the cluster's health.
In one glimpse, the user or operator can check if there are any unhealthy stations, determine the stability of the system components, and monitor system resources.

System components panel

The "System components" panel had made for the infrastructure administrators to be able to track and monitor virtual resources utilization.

Fix: "No metrics server found"

In Kubernetes deployments only. If the following warning is shown -
Memphis "System components" panel uses k8s "metric-server" to read the cluster resources.

Installation

K8s

The latest Metrics Server release can be installed by running:
kubectl apply -f https://github.com/kubernetes-sigs/metrics-server/releases/latest/download/components.yaml
Installation instructions for previous releases can be found in Metrics Server releases.

minikube

Within minikube enable the metrics-server addon by running:
minikube addon enable metrics-server
Compatibility matrix:
Metrics Server
Metrics API group/version
Supported Kubernetes version
0.6.x
metrics.k8s.io/v1beta1
*1.19+
0.5.x
metrics.k8s.io/v1beta1
*1.8+
0.4.x
metrics.k8s.io/v1beta1
*1.8+
0.3.x
metrics.k8s.io/v1beta1
1.8-1.21
*For <1.16 requires passing --authorization-always-allow-paths=/livez,/readyz command line flag