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система_kubernetes
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| Both sides previous revision Previous revision Next revision | Previous revision Next revision Both sides next revision | ||
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система_kubernetes [2024/04/03 07:27] val [Volumes] |
система_kubernetes [2024/04/27 06:47] val [Deployment, Replica Sets, Pods] |
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| Line 171: | Line 171: | ||
| === Установка ПО === | === Установка ПО === | ||
| + | === !!! Обратитесь к преподавателю !!! === | ||
| <code> | <code> | ||
| node1# bash -c ' | node1# bash -c ' | ||
| Line 258: | Line 259: | ||
| === 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 | ||
| Line 329: | Line 333: | ||
| ==== Развертывание через Kubespray ==== | ==== Развертывание через Kubespray ==== | ||
| + | |||
| + | === !!! Обратитесь к преподавателю !!! === | ||
| * [[https://github.com/kubernetes-sigs/kubespray]] | * [[https://github.com/kubernetes-sigs/kubespray]] | ||
| Line 356: | Line 362: | ||
| ~/kubespray# git branch -r | ~/kubespray# git branch -r | ||
| - | ~/kubespray# ### git checkout origin/release-2.22 # debian11 - 2.24 | + | ~/kubespray# ### git checkout origin/release-2.22 |
| ~/kubespray# git tag -l | ~/kubespray# git tag -l | ||
| Line 373: | Line 379: | ||
| real 1m48.202s | real 1m48.202s | ||
| - | ~/kubespray# cp -rfp inventory/sample inventory/mycluster | + | ~/kubespray# cp -rvfpT inventory/sample inventory/mycluster |
| ~/kubespray# declare -a IPS=(kube1,192.168.X.221 kube2,192.168.X.222 kube3,192.168.X.223) | ~/kubespray# declare -a IPS=(kube1,192.168.X.221 kube2,192.168.X.222 kube3,192.168.X.223) | ||
| Line 466: | Line 472: | ||
| $ 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" | ||
| Line 594: | Line 601: | ||
| $ 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> | ||
| Line 804: | Line 838: | ||
| 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> | ||
| Line 990: | Line 1026: | ||
| storage: 128Mi | storage: 128Mi | ||
| # storage: 8Gi | # storage: 8Gi | ||
| - | # volumeMode: Filesystem | ||
| accessModes: | accessModes: | ||
| - ReadWriteMany | - ReadWriteMany | ||
| Line 1013: | Line 1048: | ||
| root@node1:~# kubectl get pv | root@node1:~# kubectl get pv | ||
| - | root@kube1:~# ### ssh kube3 chmod 777 /disk2/ | + | root@kube1:~# ###ssh kube3 'mkdir /disk2/; chmod 777 /disk2/' |
| ... | ... | ||
| - | root@node1:~# ###kubectl delete pv my-pv-node2-sz-128m-num-001 | + | root@node1:~# ###kubectl delete pv my-pv-<TAB> |
| root@node1:~# cat my-ha-pvc.yaml | root@node1:~# cat my-ha-pvc.yaml | ||
| Line 1046: | Line 1081: | ||
| * [[https://kubernetes.io/docs/concepts/storage/dynamic-provisioning/|Dynamic Volume Provisioning]] | * [[https://kubernetes.io/docs/concepts/storage/dynamic-provisioning/|Dynamic Volume Provisioning]] | ||
| - | == rancher local-path-provisioner == | + | === rancher local-path-provisioner === |
| * [[https://github.com/rancher/local-path-provisioner|rancher local-path-provisioner]] | * [[https://github.com/rancher/local-path-provisioner|rancher local-path-provisioner]] | ||
| Line 1055: | Line 1090: | ||
| $ kubectl get sc | $ kubectl get sc | ||
| + | |||
| + | $ kubectl -n local-path-storage get all | ||
| $ curl https://raw.githubusercontent.com/rancher/local-path-provisioner/v0.0.26/deploy/local-path-storage.yaml | less | $ curl https://raw.githubusercontent.com/rancher/local-path-provisioner/v0.0.26/deploy/local-path-storage.yaml | less | ||
| Line 1076: | Line 1113: | ||
| $ ###kubectl -n my-keycloak-ns delete pvc data-my-keycloak-postgresql-0 | $ ###kubectl -n my-keycloak-ns delete pvc data-my-keycloak-postgresql-0 | ||
| </code> | </code> | ||
| - | == longhorn == | + | === longhorn === |
| <code> | <code> | ||
| Line 1083: | Line 1120: | ||
| * [[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 | ||
| Line 1094: | Line 1135: | ||
| <code> | <code> | ||
| cmder> kubectl proxy | cmder> kubectl proxy | ||
| - | |||
| - | http://localhost:8001/api/v1/namespaces/longhorn-system/services/longhorn-frontend:80/proxy/ | ||
| </code> | </code> | ||
| + | |||
| + | * http://localhost:8001/api/v1/namespaces/longhorn-system/services/longhorn-frontend:80/proxy/ | ||
| Подключение через ingress | Подключение через ingress | ||
| Line 1123: | Line 1164: | ||
| </code> | </code> | ||
| - | Использование snapshot-ов | + | == Использование snapshot-ов == |
| * [[https://github.com/longhorn/longhorn/issues/63?ref=https%3A%2F%2Fgiter.vip|What should be the best procedure to recover a snapshot or a backup in rancher2/longhorn ?]] | * [[https://github.com/longhorn/longhorn/issues/63?ref=https%3A%2F%2Fgiter.vip|What should be the best procedure to recover a snapshot or a backup in rancher2/longhorn ?]] | ||
| + | |||
| + | * Делаем снапшот | ||
| + | * Что-то ломаем (удаляем пользователя) | ||
| + | * Останавливаем сервис | ||
| <code> | <code> | ||
| Line 1131: | Line 1176: | ||
| kube1:~# kubectl -n my-keycloak-ns scale --replicas 0 statefulset my-keycloak-postgresql | kube1:~# kubectl -n my-keycloak-ns scale --replicas 0 statefulset my-keycloak-postgresql | ||
| + | </code> | ||
| + | * Volume -> Attache to Host (любой) в режиме Maintenance, Revert к снапшоту, Deattache | ||
| + | * Запускаем сервис | ||
| + | |||
| + | <code> | ||
| kube1:~# kubectl -n my-keycloak-ns scale --replicas 1 statefulset my-keycloak-postgresql | kube1:~# kubectl -n my-keycloak-ns scale --replicas 1 statefulset my-keycloak-postgresql | ||
| Line 1137: | Line 1187: | ||
| </code> | </code> | ||
| - | Использование backup-ов | + | == Использование backup-ов == |
| + | |||
| + | * Разворачиваем [[Сервис NFS]] на server | ||
| <code> | <code> | ||
| - | Setting -> General -> Backup Target -> nfs://server.corp13.un:/disk2 | + | Setting -> General -> Backup Target -> nfs://server.corp13.un:/var/www (nfs client linux не нужен) |
| </code> | </code> | ||
| - | * бекапим, удаляем чарт, удаляем pv/pvc, восстанавливаем Volume из бекапа, создаем для него PV/PVC как было, устанавливаем чарт, он подхватывает pv/pvc | + | * Volume -> Create Backup, удаляем NS, восстанавливаем Volume из бекапа, создаем NS и создаем для Volume PV/PVC как было, устанавливаем чарт, он подхватывает pv/pvc |
| ==== ConfigMap ==== | ==== ConfigMap ==== | ||
система_kubernetes.txt · Last modified: 2024/05/13 17:43 by val
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