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система_kubernetes
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| Both sides previous revision Previous revision Next revision | Previous revision | ||
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система_kubernetes [2025/03/24 10:22] val [Deployment, Replica Sets, Pods] |
система_kubernetes [2025/03/31 13:51] (current) val [Metrics Server] |
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| Line 522: | Line 522: | ||
| $ ###kubectl run -ti --rm my-debian --image=debian --overrides='{"spec": { "nodeSelector": {"kubernetes.io/hostname": "kube4"}}}' | $ ###kubectl run -ti --rm my-debian --image=debian --overrides='{"spec": { "nodeSelector": {"kubernetes.io/hostname": "kube4"}}}' | ||
| - | $ kubectl run my-debian --image=debian -- "sh" "-c" "while :;do echo -n msg:;od -A n -t d -N 1 /dev/urandom;sleep 5; done" | + | $ kubectl run my-debian --image=debian -- "sleep" "60" |
| $ kubectl get pods | $ kubectl get pods | ||
| Line 582: | Line 582: | ||
| image: debian | image: debian | ||
| command: ["/bin/sh"] | command: ["/bin/sh"] | ||
| - | args: ["-c", "while true; do echo hello; sleep 3;done"] | + | args: ["-c", "while :;do echo -n random-value:;od -A n -t d -N 1 /dev/urandom;sleep 5; done"] |
| + | resources: | ||
| + | requests: | ||
| + | memory: "64Mi" | ||
| + | cpu: "250m" | ||
| + | limits: | ||
| + | memory: "128Mi" | ||
| + | cpu: "500m" | ||
| restartPolicy: Always | restartPolicy: Always | ||
| </code><code> | </code><code> | ||
| $ kubectl apply -f my-debian-deployment.yaml #--dry-run=client #-o yaml | $ kubectl apply -f my-debian-deployment.yaml #--dry-run=client #-o yaml | ||
| + | |||
| + | $ kubectl logs -l app=my-debian -f | ||
| ... | ... | ||
| $ kubectl delete -f my-debian-deployment.yaml | $ kubectl delete -f my-debian-deployment.yaml | ||
| Line 669: | Line 678: | ||
| # port: 80 | # port: 80 | ||
| # #scheme: HTTPS | # #scheme: HTTPS | ||
| - | |||
| - | # resources: | ||
| - | # requests: | ||
| - | # memory: "64Mi" | ||
| - | # cpu: "250m" | ||
| - | # limits: | ||
| - | # memory: "128Mi" | ||
| - | # cpu: "500m" | ||
| - | |||
| # volumeMounts: | # volumeMounts: | ||
| Line 2104: | Line 2104: | ||
| * http://localhost:8001/api/v1/namespaces/kubernetes-dashboard/services/https:kubernetes-dashboard:/proxy/ | * http://localhost:8001/api/v1/namespaces/kubernetes-dashboard/services/https:kubernetes-dashboard:/proxy/ | ||
| + | ===== Мониторинг ===== | ||
| + | |||
| + | ==== Metrics Server ==== | ||
| + | |||
| + | * [[https://kubernetes-sigs.github.io/metrics-server/Kubernetes Metrics Server]] | ||
| + | * [[https://medium.com/@cloudspinx/fix-error-metrics-api-not-available-in-kubernetes-aa10766e1c2f|Fix “error: Metrics API not available” in Kubernetes]] | ||
| + | |||
| + | <code> | ||
| + | kube1:~/metrics-server# curl -L https://github.com/kubernetes-sigs/metrics-server/releases/download/v0.7.2/components.yaml | tee metrics-server-components.yaml | ||
| + | |||
| + | kube1:~/metrics-server# cat metrics-server-components.yaml | ||
| + | </code><code> | ||
| + | ... | ||
| + | containers: | ||
| + | - args: | ||
| + | - --cert-dir=/tmp | ||
| + | - --kubelet-insecure-tls # add this | ||
| + | ... | ||
| + | </code><code> | ||
| + | kube1:~/metrics-server# kubectl apply -f metrics-server-components.yaml | ||
| + | |||
| + | kube1# kubectl get pods -A | grep metrics-server | ||
| + | |||
| + | kube1# kubectl top pod #-n kube-system | ||
| + | |||
| + | kube1# kubectl top pod -A --sort-by=memory | ||
| + | |||
| + | kube1# kubectl top node | ||
| + | </code> | ||
| + | |||
| + | ==== kube-state-metrics ==== | ||
| + | |||
| + | * [[https://github.com/prometheus-community/helm-charts/tree/main/charts/kube-state-metrics]] | ||
| + | |||
| + | <code> | ||
| + | kube1# helm repo add prometheus-community https://prometheus-community.github.io/helm-charts | ||
| + | |||
| + | kube1# helm repo update | ||
| + | kube1# helm install kube-state-metrics prometheus-community/kube-state-metrics -n vm --create-namespace | ||
| + | |||
| + | kube1# curl kube-state-metrics.vm.svc.cluster.local:8080/metrics | ||
| + | </code> | ||
| ===== Отладка, troubleshooting ===== | ===== Отладка, troubleshooting ===== | ||
система_kubernetes.1742800941.txt.gz · Last modified: 2025/03/24 10:22 by val
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