What is Kubernetes Metrics Server?
Kubernetes Metrics Server is a cluster-wide aggregator of resource usage data. It collects metrics like CPU and memory usage from Kubelets and exposes them via the Kubernetes API.
How do I install Metrics Server in my Kubernetes cluster?
You can install Metrics Server using kubectl by applying the official YAML manifest. Run kubectl apply -f https://github.com/kubernetes-sigs/metrics-server/releases/latest/download/components.yaml
.
Can I use Metrics Server for autoscaling?
Yes, Metrics Server provides the necessary metrics for Horizontal Pod Autoscaler (HPA) to scale your applications based on resource usage.
What are the limitations of Metrics Server?
Metrics Server does not store historical metrics and is not suitable for long-term monitoring. It only provides current resource usage.
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