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metrics-server


metrics server​

https://ssup2.github.io/theory_analysis/Kubernetes_Metric_Server/

설치​

helm repo add metrics-server https://kubernetes-sigs.github.io/metrics-server/
helm repo update metrics-server \
&& helm search repo metrics-server/metrics-server -l | head -n 10
helm pull metrics-server/metrics-server --version 3.12.0
helm show values metrics-server-3.12.0.tgz \
    > metrics-server-3.12.0.yaml
metrics-server-values.yaml
commonLabels: {}

args:
  []
  # - --kubelet-insecure-tls
  # - --v=2

resources:
  requests:
    cpu: 100m
    memory: 200Mi

tolerations:
  - operator: Exists
info

로그에 "Failed to scrape node" err="Get \"https://xxx:10250/stats/summary?only_cpu_and_memory=true\": x509: cannot validate certificate for xxx because it doesn't contain any IP SANs" node="xxx"와 같은 에러가 발생하는 경우 --kubelet-insecure-tls를 추가해주세요.

helm template metrics-server metrics-server-3.12.0.tgz \
    -n kube-system \
    -f metrics-server-values.yaml \
    > metrics-server.yaml
helm upgrade metrics-server metrics-server-3.12.0.tgz \
    --install \
    --history-max 5 \
    -n kube-system \
    -f metrics-server-values.yaml

삭제​

helm uninstall metrics-server -n kube-system

Troubleshooting​

kubectl describe apiservices v1beta1.metrics.k8s.io