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система_kubernetes [2024/04/05 15:09] val [Volumes] |
система_kubernetes [2024/05/13 17:43] val [Service] |
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=== Установка ПО === | === Установка ПО === | ||
+ | === !!! Обратитесь к преподавателю !!! === | ||
<code> | <code> | ||
node1# bash -c ' | node1# bash -c ' | ||
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=== Удаление узла === | === Удаление узла === | ||
+ | |||
+ | * [[https://stackoverflow.com/questions/56064537/how-to-remove-broken-nodes-in-kubernetes|How to remove broken nodes in Kubernetes]] | ||
+ | |||
<code> | <code> | ||
$ kubectl cordon kube3 | $ kubectl cordon kube3 | ||
- | $ time kubectl drain kube3 --force --ignore-daemonsets --delete-emptydir-data | + | $ time kubectl drain kube3 #--ignore-daemonsets --delete-emptydir-data --force |
$ kubectl delete node kube3 | $ kubectl delete node kube3 | ||
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==== Развертывание через Kubespray ==== | ==== Развертывание через Kubespray ==== | ||
+ | |||
+ | === !!! Обратитесь к преподавателю !!! === | ||
* [[https://github.com/kubernetes-sigs/kubespray]] | * [[https://github.com/kubernetes-sigs/kubespray]] | ||
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~/kubespray# git branch -r | ~/kubespray# git branch -r | ||
- | ~/kubespray# ### git checkout origin/release-2.22 | + | ~/kubespray# git checkout origin/release-2.22 |
~/kubespray# git tag -l | ~/kubespray# git tag -l | ||
~/kubespray# ### git checkout tags/v2.22.1 | ~/kubespray# ### git checkout tags/v2.22.1 | ||
- | ~/kubespray# git checkout 4c37399c7582ea2bfb5202c3dde3223f9c43bf59 | + | ~/kubespray# ### git checkout 4c37399c7582ea2bfb5202c3dde3223f9c43bf59 |
~/kubespray# ### git checkout master | ~/kubespray# ### git checkout master | ||
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$ kubectl delete pod my-debian | $ kubectl delete pod my-debian | ||
+ | $ ###kubectl delete pod my-debian --grace-period=0 --force | ||
$ kubectl create deployment my-debian --image=debian -- "sleep" "3600" | $ kubectl create deployment my-debian --image=debian -- "sleep" "3600" | ||
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$ kubectl delete pod/my-webd-NNNNNNNNNN-NNNNN -n my-ns | $ kubectl delete pod/my-webd-NNNNNNNNNN-NNNNN -n my-ns | ||
+ | </code> | ||
+ | |||
+ | * [[https://learnk8s.io/kubernetes-rollbacks|How do you rollback deployments in Kubernetes?]] | ||
+ | |||
+ | <code> | ||
+ | gitlab-runner@server:~$ kubectl -n my-ns rollout history deployment/my-webd | ||
+ | deployment.apps/my-webd | ||
+ | REVISION CHANGE-CAUSE | ||
+ | 1 <none> | ||
+ | ... | ||
+ | N <none> | ||
+ | |||
+ | gitlab-runner@server:~$ kubectl -n my-ns rollout history deployment/my-webd --revision=1 | ||
+ | ... | ||
+ | Image: server.corpX.un:5000/student/webd:ver1.1 | ||
+ | ... | ||
+ | |||
+ | kubectl -n my-ns rollout undo deployment/my-webd --to-revision=1 | ||
+ | |||
+ | gitlab-runner@server:~$ kubectl -n my-ns rollout undo deployment/my-webd --to-revision=1 | ||
+ | |||
+ | gitlab-runner@server:~$ kubectl -n my-ns rollout history deployment/my-webd | ||
+ | deployment.apps/my-webd | ||
+ | REVISION CHANGE-CAUSE | ||
+ | 2 <none> | ||
+ | ... | ||
+ | N+1 <none> | ||
</code> | </code> | ||
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$ minikube service list | $ minikube service list | ||
- | $ minikube service my-webd -n my-ns --url | + | $ minikube service my-webd --url -n my-ns |
http://192.168.49.2:NNNNN | http://192.168.49.2:NNNNN | ||
- | $ curl $(minikube service my-webd -n my-ns --url) | + | $ curl http://192.168.49.2:NNNNN |
</code> | </code> | ||
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node1# kubectl get all -n ingress-nginx | node1# kubectl get all -n ingress-nginx | ||
- | node1# ### kubectl delete -f ingress-nginx.controller-v1.3.1.baremetal.yaml | + | node1# ###kubectl delete -A ValidatingWebhookConfiguration ingress-nginx-admission |
+ | |||
+ | node1# ###kubectl delete -f ingress-nginx.controller-v1.3.1.baremetal.yaml | ||
</code> | </code> | ||
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storage: 128Mi | storage: 128Mi | ||
# storage: 8Gi | # storage: 8Gi | ||
- | # volumeMode: Filesystem | ||
accessModes: | accessModes: | ||
- ReadWriteMany | - ReadWriteMany | ||
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* [[https://github.com/longhorn/longhorn]] | * [[https://github.com/longhorn/longhorn]] | ||
<code> | <code> | ||
+ | $ kubectl apply -f https://raw.githubusercontent.com/longhorn/longhorn/v1.6.0/deploy/longhorn.yaml | ||
+ | |||
+ | $ kubectl -n longhorn-system get pods -o wide --watch | ||
+ | |||
Setting->General | Setting->General | ||
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* Делаем снапшот | * Делаем снапшот | ||
- | * Что-то ломаем | + | * Что-то ломаем (удаляем пользователя) |
* Останавливаем сервис | * Останавливаем сервис | ||
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== Использование backup-ов == | == Использование backup-ов == | ||
+ | |||
+ | * Разворачиваем [[Сервис NFS]] на server | ||
+ | |||
<code> | <code> | ||
Setting -> General -> Backup Target -> nfs://server.corp13.un:/var/www (nfs client linux не нужен) | Setting -> General -> Backup Target -> nfs://server.corp13.un:/var/www (nfs client linux не нужен) |