mountPath: /var/lib/mysql volumes: - name: mysql-persistent-storage persistentVolumeClaim...mountPath: /var/www/html volumes: - name: wordpress-persistent-storage...Volume Claims ## ref: http://kubernetes.io/docs/user-guide/persistent-volumes/ ## master:...persistence: enabled: true ## mariadb data Persistent Volume Storage Class ## If defined...Volume Storage Class ## If defined, storageClassName: ## If set to "-", storageClassName
usr/share/nginx/html readOnly: true ports: - containerPort: 80 protocol: TCP volumes...概念 PersistentVolume (持久卷， 简称 PV)和Persistent VolumeClaim(持久卷声明，简称 PVC)使得K8s集群具备了存储的逻辑抽象能力，使得在配置Pod的逻辑里可以忽略对实际后台存储技术的配置...created [root@master ~]# kubectl get pv NAME CAPACITY ACCESS MODES RECLAIM POLICY STATUS CLAIM...@master ~]# kubectl get pv NAME CAPACITY ACCESS MODES RECLAIM POLICY STATUS CLAIM...[gzzdn5p0zo.png] 本文所有脚本和配置文件已上传：k8s实践(七)：存储卷和数据持久化(Volumes and Persistent Storage) 我的博客即将同步至腾讯云+社区，邀请大家一同入驻
: [kubernetes.io/pv-protection] StorageClass: Status: Available Claim:...volume backed by local storage on a node) Path: /tmp Events: 可以看到PV处于Available状态。..." already bound to a different claim....因为PV没有处于Available状态。.../persistent-volumes/ https://cloud.tencent.com/document/product/457/47014
[img] 从一个例子入手PV、PVC Kubernetes 项目引入了一组叫作 Persistent Volume Claim（PVC）和 Persistent Volume（PV）的 API 对象用于管理存储卷.../persistent-volumes/#access-modes； storageClassName为空，表示的是storageClass的名称，我们下面会说到。...= nil { return err } // [Unit test set 1] //根据声明的PVC设置的字段找到对应的PV volume, err := ctrl.volumes.findBestMatchForClaim..., events.FailedBinding, "no persistent volumes available for this claim and no storage class is set")...References https://draveness.me/kubernetes-volume/ https://kubernetes.io/docs/concepts/storage/persistent-volumes
PVC的全称是Persistent Volume Claim（持久化卷声明），我们可以将PV比喻为接口，里面封装了我们底层的数据存储，PVC就是调用接口实现数据存储操作，PVC消耗的是PV的资源。... Finalizers: [kubernetes.io/pv-protection] StorageClass: Status: Available Claim...Failed（失败）：表示该 PV 的自动回收失败 单纯的创建PV，我们并不能直接使用，需要使用PVC（Persistent Volume Claim）来进行声明。...PVC PVC（Persistent Volume Claim）用于表达用户对存储的需求，申请PVC会消耗掉PV的资源，可以通过kubectl explain pvc来查看帮助文档。...: IfNotPresent volumeMounts: - name: nfs-pvc mountPath: /mnt restartPolicy: Never volumes
Persistent Volume Claim：pvc由PersistentVolumeClaim API对象定义，该对象表示开发人员对存储的请求。...1.6 Persistent Volume Storage Classes PV Claims可以通过在storageClassName属性中指定它的名称来选择性地请求特定的存储类。...that shares a pod's lifetime) 5 [student@workstation ~]$ oc set volumes dc mysqldb \ 6 --add --overwrite...#删除项目 2 project "persistent-storage" deleted 3 [student@workstation ~]$ oc delete pv mysqldb-volume...1 [user@demo ~] oc describe dc/docker-registry | grep -A4 Volumes 2 Volumes: 3 registry-storage
Kubernetes 如何与 Ceph 联动 1.1 使用到的 Kubernetes 概念 Persistent Volumes Persistent Volume Claims Storage Classes...1.2 Example: cat rbd-storage-class.yaml kind: StorageClass apiVersion: storage.k8s.io/v1 metadata:...apiVersion: v1 kind: PersistentVolumeClaim metadata: name: ceph-rbd-dyn-pv-claim spec: accessModes...- name: ceph-dyn-rbd-vol1 mountPath: /mnt/ceph-dyn-rbd-pvc/busybox readOnly: false volumes...: - name: ceph-dyn-rbd-vol1 persistentVolumeClaim: claimName: ceph-rbd-dyn-pv-claim 2.
ports: - containerPort: 3306 name: mysql volumeMounts: - name: mysql-persistent-storage...: - name: mysql-persistent-storage persistentVolumeClaim: claimName: mysql-pv-claim...- containerPort: 80 name: wordpress volumeMounts: - name: wordpress-persistent-storage...: - name: wordpress-persistent-storage persistentVolumeClaim: claimName: wp-pvc02...: - name: wordpress-persistent-storage persistentVolumeClaim: claimName: wp-pvc01
match those of existing PV or dynamic provisioner ## Ref: http://kubernetes.io/docs/user-guide/persistent-volumes...## size: 50Gi ## alertmanager data Persistent Volume Storage Class ## If defined, storageClassName...match those of existing PV or dynamic provisioner ## Ref: http://kubernetes.io/docs/user-guide/persistent-volumes...size ## size: 200Gi ## Prometheus server data Persistent Volume Storage Class ## If...## size: 50Gi ## pushgateway data Persistent Volume Storage Class ## If defined, storageClassName
Persistent volume配置 1.为mysql data与wordpress源码存储创建Persistent volume # kubectl create -f mysql-pv.yaml...ports: - containerPort: 3306 name: mysql volumeMounts: - name: mysql-persistent-storage...mountPath: /var/lib/mysql volumes: - name: mysql-persistent-storage persistentVolumeClaim...- containerPort: 80 name: wordpress volumeMounts: - name: wordpress-persistent-storage...mountPath: /var/www/html volumes: - name: wordpress-persistent-storage
具体来说是通过Init Container来做集群的初始化工 作，用 Headless Service来维持集群成员的稳定关系，用Persistent Volume和Persistent Volume...Claim提供网络存储来持久化数据，从而支持有状态集群服务的部署。...kind: PersistentVolume metadata: name: pv0001 annotations: volume.beta.kubernetes.io/storage-class...volumeClaimTemplates: - metadata: name: datadir annotations: volume.beta.kubernetes.io/storage-class...volumeClaimTemplates: - metadata: name: datadir annotations: volume.beta.kubernetes.io/storage-class
name: minio-pv-claim labels: app: minio-storage-claim spec: # Read more about access modes here...: https://kubernetes.io/docs/user-guide/persistent-volumes/#access-modes accessModes: - ReadWriteOnce...Should be available in the cluster....Read more https://kubernetes.io/docs/concepts/storage/persistent-volumes/#class-1 #storageClassName...app: minio spec: # Refer to the PVC created earlier volumes: - name: storage
Volume Claims ## ref: http://kubernetes.io/docs/user-guide/persistent-volumes/ ## master:...persistence: enabled: true ## mariadb data Persistent Volume Storage Class ## If defined...# set, choosing the default provisioner....Volume Storage Class ## If defined, storageClassName: ## If set to "-", storageClassName..., you can pass the name of the PVC using ## the existingClaim variable # existingClaim: your-claim
glusterfs http://gluster.readthedocs.io/en/latest/Administrator%20Guide/ http://blog.gluster.org/2016/03/persistent-volume-and-claim-in-openshift-and-kubernetes-using-glusterfs-volume-plugin.../ https://docs.openshift.org/latest/install_config/persistent_storage/persistent_storage_glusterfs.html...The example assumes that you have already set up a Glusterfs server cluster and the Glusterfs client...apiVersion: v1 kind: PersistentVolume metadata: name: gluster-default-volume spec: capacity: storage...spec: accessModes: - ReadWriteMany resources: requests: storage: 8Gi [root@k8s-master
not set for StorageClass %q", className) } return *class.VolumeBindingMode == storage.VolumeBindingWaitForFirstConsumer...== "" { return false, fmt.Errorf("no class for claim %q", getPVCName(claim)) } class, err :=...= nil { return false, fmt.Errorf("failed to find storage class %q", className) } provisioner :...("storage class %q of claim %q does not support dynamic provisioning", className, getPVCName(claim))...claim)) return false, nil } // TODO: Check if capacity of the node domain in the storage class
Persistent Volume 2.1 PV Persistent Volume 简称 PV，是 Kubernetes 集群中某个网络存储对应的一块存储，是整个集群的分布式存储资源。...Volume Claim）来实现对分布式存储空间的创建和分配。...: 2Gi 2.2 Persistent Volume Claim Persistent Volume Claim 简称 PVC，顾名思义，是对 Persistent Volume 资源的请求，正如 Pod...volumes: - name: pv-storage persistentVolumeClaim: claimName: pv-claim 2.4 PV 的优点 PV 的存在...比如，在名叫 web-0 的 Pod 的 volumes 字段，它会声明使用名叫 www-web-0 的 PVC，从而挂载到这个 PVC 所绑定的 PV。
If true, vmselect will create/use a Persistent Volume Claim enabled: false # -- Array of access...persistent-volumes/ "http://kubernetes.io/docs/user-guide/persistent-volumes/") accessModes:...- ReadWriteOnce # -- Persistent volume annotations annotations: {} # -- Existing Claim name...persistent-volumes/ "http://kubernetes.io/docs/user-guide/persistent-volumes/") accessModes:...- ReadWriteOnce # -- Persistent volume annotations annotations: {} # -- Storage class name
liruilong-volume-create created ┌──[root@vms81.liruilongs.github.io]-[~/ansible/k8s-volume-create] └─$kubectl config set-context...比如在使用虚拟机的情况下,我们通常会先定义一个网络存储,然后从中划出一个“网盘”并挂接到虚拟机上 Persistent Volume(简称PV)和与之相关联的Persistent Volume Claim...Persistent Volume与Volume的区别 PV只能是网络存储,不属于任何Node,但可以在每个Node上访问。 PV并不是定义在Pod上的,而是独立于Pod之外定义。...found ┌──[root@vms81.liruilongs.github.io]-[~/ansible/k8s-volume-create/nfsdy] └─$kubectl apply -f class.yaml...fuseim.pri/ifs Delete Immediate false 3s class.yaml apiVersion
本文从最简单的 k8s 连接 ceph 方式开始， 并过渡到 PV（Persistent Volume） 和 PVC（Persistent Volume Claim）方式，本系列文章后面还会介绍使用 StorageClass...1.2 PVC（Persistent Volume Claim）简介： PVC 是用户使用存储资源的声明，和 Pod 这一概念类似，Pod 消耗的是 Node 上的计算资源，PVC 消耗的是 PV 资源...ports: - containerPort: 3306 name: mysql volumeMounts: - name: mysql-persistent-storage...mountPath: /var/lib/mysql volumes: - name: mysql-persistent-storage persistentVolumeClaim...参考文档 初试 Kubernetes 集群使用 Ceph RBD 块存储 Kubernetes concept: Volume Kubernetes concept: Persistent Volumes
STORAGECLASS REASON AGE cephfs-pv 1Gi RWX Recycle Available...4.2 创建 PVC 好了，上边 PV 资源已经创建好了，接下来创建对资源的请求 PVC，新建 PVC 文件 cephfs-pv-claim.yaml 如下： $ cat cephfs-pv-claim.yaml...$ kubectl create -f cephfs-pv-claim.yaml persistentvolumeclaim "cephfs-pv-claim" created $ kubectl get...同时 kubernetes 官网 Persistent Volumes 文档 中指出，当静态 PV 都不匹配用户的 PVC 请求时，k8s 集群还支持 Dynamic 动态提供 Volume 给 PVC...参考资料 Ceph 官网文档 Kubernetes Persistent Volumes 官网文档 Kubernetes Examples Volumes CephFS Github 示例
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