Kubernetes Metrics Server Operations: Difference between revisions
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| Line 11: | Line 11: | ||
=Installation= | =Installation= | ||
{{External|https://github.com/kubernetes-sigs/metrics-server#requirements}} | {{External|https://github.com/kubernetes-sigs/metrics-server#requirements}} | ||
==Docker Desktop Kubernetes== | ==With Manifest== | ||
===Install=== | ===Docker Desktop Kubernetes=== | ||
====Install==== | |||
<syntaxhighlight lang='text'> | <syntaxhighlight lang='text'> | ||
kubectl apply -f https://github.com/kubernetes-sigs/metrics-server/releases/download/v0.3.7/components.yaml | kubectl apply -f https://github.com/kubernetes-sigs/metrics-server/releases/download/v0.3.7/components.yaml | ||
| Line 31: | Line 32: | ||
</syntaxhighlight> | </syntaxhighlight> | ||
It is deployed in the 'kube-system' namespace. | It is deployed in the 'kube-system' namespace. | ||
===Configuration=== | ====Configuration==== | ||
For Docker Desktop Kubernetes, add "--kubelet-insecure-tls", otherwise the pod reads will fail with: | For Docker Desktop Kubernetes, add "--kubelet-insecure-tls", otherwise the pod reads will fail with: | ||
<syntaxhighlight lang='text'> | <syntaxhighlight lang='text'> | ||
| Line 51: | Line 52: | ||
</syntaxhighlight> | </syntaxhighlight> | ||
===Uninstall=== | ====Uninstall==== | ||
Uninstall all the Kubernetes API resources. To reconfigure, it is sufficient to uninstall then re-install the deployment. | Uninstall all the Kubernetes API resources. To reconfigure, it is sufficient to uninstall then re-install the deployment. | ||
==EKS== | ===EKS=== | ||
{{External|https://docs.aws.amazon.com/eks/latest/userguide/horizontal-pod-autoscaler.html}} | {{External|https://docs.aws.amazon.com/eks/latest/userguide/horizontal-pod-autoscaler.html}} | ||
==With Helm== | |||
=Installation Validation= | =Installation Validation= | ||
{{Internal|kubectl top|kubectl top}} | {{Internal|kubectl top|kubectl top}} | ||
Revision as of 22:51, 6 October 2020
External
Internal
Help
docker run --rm k8s.gcr.io/metrics-server/metrics-server:v0.3.7 --help
Installation
With Manifest
Docker Desktop Kubernetes
Install
kubectl apply -f https://github.com/kubernetes-sigs/metrics-server/releases/download/v0.3.7/components.yaml
If configuration needs to be changed, pull the file locally and install it with:
kubectl apply -f ./components.yaml
clusterrole.rbac.authorization.k8s.io/system:aggregated-metrics-reader created
clusterrolebinding.rbac.authorization.k8s.io/metrics-server:system:auth-delegator created
rolebinding.rbac.authorization.k8s.io/metrics-server-auth-reader created
apiservice.apiregistration.k8s.io/v1beta1.metrics.k8s.io created
serviceaccount/metrics-server created
deployment.apps/metrics-server created
service/metrics-server created
clusterrole.rbac.authorization.k8s.io/system:metrics-server created
clusterrolebinding.rbac.authorization.k8s.io/system:metrics-server created
It is deployed in the 'kube-system' namespace.
Configuration
For Docker Desktop Kubernetes, add "--kubelet-insecure-tls", otherwise the pod reads will fail with:
x509: certificate signed by unknown authority
kind: Deployment
metadata:
name: metrics-server
spec:
template:
spec:
containers:
- name: metrics-server
args:
- --kubelet-insecure-tls
- --cert-dir=/tmp
- --secure-port=4443
Uninstall
Uninstall all the Kubernetes API resources. To reconfigure, it is sufficient to uninstall then re-install the deployment.