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查网站开通时间,龙华网站建设的基本步骤,网站建设哪里培训,接收新网站如何做诊断文章目录 前言部署NFS服务器K8S部署NFS问题记录 前言 使用nfs-client-provisioner这个应用#xff0c;利用nfs server给kubernets提供作为持久化后端#xff0c;并且动态提供pv。所有节点需要安装nfs-utils组件#xff0c;并且nfs服务器与kubernets worker节点都能网络连通… 文章目录 前言部署NFS服务器K8S部署NFS问题记录 前言 使用nfs-client-provisioner这个应用利用nfs server给kubernets提供作为持久化后端并且动态提供pv。所有节点需要安装nfs-utils组件并且nfs服务器与kubernets worker节点都能网络连通。 部署NFS服务器 注这里使用master节点作为nfs服务器根据自己资源情况进行调整部署。 安装nfs组件及创建数据目录 [rootk8s-master ~]# yum install -y nfs-utils rpcbind [rootk8s-master ~]# mkdir -p /data/nfs_data编辑exportfs文件

cat /etc/exports

/data/nfs_data 10.255.82.0/24(rw,no_root_squash)配置生效

exportfs -rav启动rpcbind、nfs服务

[rootk8s-master ~]# systemctl restart rpcbind systemctl enable rpcbind [rootk8s-master ~]# systemctl restart nfs systemctl enable nfsshowmount测试 [rootk8s-master ~]# showmount -e 10.255.82.25 Export list for 10.255.82.25 /data/nfs_data 10.255.82.0/24 [rootk8s-master ~]# K8S部署NFS nfs部署资源文件如下 [rootk8s-master nfs]# ls -l 总用量 12 -rw-r–r– 1 root root 181 12月 8 17:47 class.yaml -rw-r–r– 1 root root 987 12月 8 17:43 deployment.yaml -rw-r–r– 1 root root 1509 12月 8 17:34 rbac.yaml [rootk8s-master nfs]#创建nfs角色权限 [rootk8s-master nfs]# kubectl apply -f rbac.yaml clusterrole.rbac.authorization.k8s.io/nfs-client-provisioner-runner created clusterrolebinding.rbac.authorization.k8s.io/run-nfs-client-provisioner created role.rbac.authorization.k8s.io/leader-locking-nfs-client-provisioner created rolebinding.rbac.authorization.k8s.io/leader-locking-nfs-client-provisioner created [rootk8s-master nfs]# 部署nfs-client-provisioner [rootk8s-master nfs]# kubectl apply -f deployment.yaml serviceaccount/nfs-client-provisioner created deployment.apps/nfs-client-provisioner created [rootk8s-master nfs]#创建nfs storageclass [rootk8s-master nfs]# kubectl apply -f class.yaml storageclass.storage.k8s.io/managed-nfs-storage created [rootk8s-master nfs]#验证nfs部署成功 [rootk8s-master nfs]# kubectl get pod -l appnfs-client-provisioner NAME READY STATUS RESTARTS AGE nfs-client-provisioner-647d8f5c7b-5lk5b ¹⁄₁ Running 3 (13h ago) 15h [rootk8s-master nfs]#查看nfs storageclass [rootk8s-master nfs]# kubectl get storageclasses.storage.k8s.io NAME PROVISIONER RECLAIMPOLICY VOLUMEBINDINGMODE ALLOWVOLUMEEXPANSION AGE managed-nfs-storage fuseim.pri/ifs Delete Immediate true 15h部署nginx服务使用nfs存储持久化[rootk8s-master nfs]# cat nfs-ngx-sts.yaml apiVersion: v1 kind: Service metadata:name: nginx-svclabels:app: nginx

spec:ports:- port: 80name: webclusterIP: Noneselector:app: nginx

apiVersion: apps/v1 kind: StatefulSet metadata:name: web spec:selector:matchLabels:app: nginx # has to match .spec.template.metadata.labelsserviceName: nginxreplicas: 1 # by default is 1minReadySeconds: 10 # by default is 0template:metadata:labels:app: nginx # has to match .spec.selector.matchLabelsspec:terminationGracePeriodSeconds: 10containers:- name: nginximage: nginx:latestimagePullPolicy: IfNotPresentports:- containerPort: 80name: webvolumeMounts:- name: wwwmountPath: /usr/share/nginx/htmlvolumeClaimTemplates:- metadata:name: wwwspec:accessModes: [ ReadWriteOnce ]storageClassName: managed-nfs-storageresources:requests:storage: 1Gi [rootk8s-master nfs]# [rootk8s-master nfs]# kubectl apply -f nfs-ngx-sts.yaml查看ngx-pod运行状态 [rootk8s-master nfs]# kubectl get pod | grep web web-0 ¹⁄₁ Running 0 13h [rootk8s-master nfs]#查看pvc状态 [rootk8s-master nfs]# kubectl get pvc -l appnginx NAME STATUS VOLUME CAPACITY ACCESS MODES STORAGECLASS AGE www-web-0 Bound pvc-782925cf-307b-4602-a226-871825fa86ac 1Gi RWO managed-nfs-storage 13h [rootk8s-master nfs]#验证ngx服务存储nfs持久化[rootk8s-master nfs]# kubectl exec -it web-0 – bash rootweb-0:/# df -h Filesystem Size Used Avail Use% Mounted on overlay 17G 5.1G 12G 30% / tmpfs 64M 0 64M 0% /dev tmpfs 2.0G 0 2.0G 0% /sys/fs/cgroup /dev/sda2 17G 5.1G 12G 30% /etc/hosts shm 64M 0 64M 0% /dev/shm 192.168.31.102:/data/nfs_data/default-www-web-0-pvc-782925cf-307b-4602-a226-871825fa86ac 17G 7.5G 9.6G 45% /usr/share/nginx/html tmpfs 3.8G 12K 3.8G 1% /run/secrets/kubernetes.io/serviceaccount tmpfs 2.0G 0 2.0G 0% /proc/acpi tmpfs 2.0G 0 2.0G 0% /proc/scsi tmpfs 2.0G 0 2.0G 0% /sys/firmware rootweb-0:/# ls -lh /usr/share/nginx/html/ total 0 rootweb-0:/# echo nfs storage /usr/share/nginx/html/index.html rootweb-0:/# cat /usr/share/nginx/html/index.html nfs storage rootweb-0:/# exit exitnfs服务器端验证数据 [rootk8s-master nfs]# cat /data/nfs_data/default-www-web-0-pvc-782925cf-307b-4602-a226-871825fa86ac/index.html nfs storage [rootk8s-master nfs]#ngx资源删除验证数据是否持久化nfs存储 [rootk8s-master nfs]# kubectl delete -f nfs-ngx-sts.yaml service nginx-svc deleted statefulset.apps web deleted [rootk8s-master nfs]# cat /data/nfs_data/default-www-web-0-pvc-782925cf-307b-4602-a226-871825fa86ac/index.html nfs storage [rootk8s-master nfs]#问题记录 pvc创建处于pending状态事件描述Normal ExternalProvisioning 2s (x4 over 48s) persistentvolume-controller waiting for a volume to be created, either by external provisioner “fuseim.pri/ifs” or manually created by system administrator 原因 Kubernetes v1.20 (opens new window)开始默认删除了 metadata.selfLink 字段然而部分应用仍然依赖于这个字段例如 nfs-client-provisioner。如果仍然要继续使用这些应用您将需要重新启用该字段。 解决方法 通过配置 apiserver 启动参数中的 –feature-gates 中的 RemoveSelfLinkfalse可以重新启用 metadata.selfLink 字段。 如果使用kubeadm安装Kubernetes请修改/etc/kubernetes/manifests/kube-apiserver.yaml文件并在其启动参数中增加一行- –feature-gatesRemoveSelfLinkfalse如下所示 然后更新kube-apiserver.yaml即可 kubectl apply -f /etc/kubernetes/manifests/kube-apiserver.yaml ②　如果是通过二进制部署kube-apiserver 通过systemctl status kube-apiserver 这个命令找到 kube-apiserver.service文件 最好先备份然后再修改即在 kube-apiserver.service中添加 –feature-gatesRemoveSelfLinkfalse。

systemctl daemon-reload

systemctl restart kube-apiserver