kubernetes1.13.1集群使用ceph rbd块存储-伙伴云

kubernetes1.13.1 集群使用ceph rbd块存储

网友投稿 727 2022-05-28

参考文档

https://github.com/Kubernetes/examples/tree/master/staging/volumes/rbdhttp://docs.Ceph.com/docs/mimic/rados/operations/pools/https://blog.csdn.net/aixiaoyang168/article/details/78999851 https://www.cnblogs.com/keithtt/p/6410302.htmlhttps://kubernetes.io/docs/concepts/storage/volumes/https://kubernetes.io/docs/concepts/storage/persistent-volumes/https://blog.csdn.net/wenwenxiong/article/details/78406136http://www.mamicode.com/info-detail-1701743.html

文档目录

kubernetes1.13.1+etcd3.3.10+flanneld0.10集群部署

kubernetes1.13.1部署kuberneted-dashboard v1.10.1

kubernetes1.13.1部署coredns

kubernetes1.13.1部署ingress-nginx并配置https转发dashboard

kubernetes1.13.1部署metrics-server0.3.1

kubernetes1.13.1集群使用ceph rbd存储块

kubernetes1.13.1集群结合ceph rbd部署最新版本jenkins

简介

ceph支持对象存储，文件系统及块存储，是三合一存储类型，kubernetes的样例中有cephfs与rbd两种使用方式的介绍，cephfs需要node节点安装ceph才能支持，rbd需要node节点安装ceph-common才支持。

使用上的区别如下：

Volume Plugin ReadWriteOnce ReadOnlyMany ReadWriteMany CephFS ✓ ✓ ✓ RBD ✓ ✓ -

基本环境

k81集群1.13.1版本

[root@elasticsearch01 ~]# kubectl get nodesNAME STATUS ROLES AGE VERSION10.2.8.34 Ready 24d v1.13.110.2.8.65 Ready 24d v1.13.1

ceph集群 luminous版本

[root@ceph01 ~]# ceph -s services: mon: 3 daemons, quorum ceph01,ceph02,ceph03 mgr: ceph03(active), standbys: ceph02, ceph01 osd: 24 osds: 24 up, 24 in rgw: 3 daemons active

操作步骤

[root@ceph01 ~]# ceph osd pool create rbd-k8s 1024 1024 For better initial performance on pools expected to store a large number of objects, consider supplying the expected_num_objects parameter when creating the pool. [root@ceph01 ~]# ceph osd lspools 1 rbd-es,2 .rgw.root,3 default.rgw.control,4 default.rgw.meta,5 default.rgw.log,6 default.rgw.buckets.index,7 default.rgw.buckets.data,8 default.rgw.buckets.non-ec,9 rbd-k8s, [root@ceph01 ~]# rbd create rbd-k8s/cephimage1 --size 10240[root@ceph01 ~]# rbd create rbd-k8s/cephimage2 --size 20480[root@ceph01 ~]# rbd create rbd-k8s/cephimage3 --size 40960[root@ceph01 ~]# rbd list rbd-k8scephimage1 cephimage2 cephimage3

1、下载样例

[root@elasticsearch01 ~]# git clone https://github.com/kubernetes/examples.gitCloning into 'examples'... remote: Enumerating objects: 11475, done. remote: Total 11475 (delta 0), reused 0 (delta 0), pack-reused 11475Receiving objects: 100% (11475/11475), 16.94 MiB | 6.00 MiB/s, done. Resolving deltas: 100% (6122/6122), done. [root@elasticsearch01 ~]# cd examples/staging/volumes/rbd[root@elasticsearch01 rbd]# lsrbd-with-secret.yaml rbd.yaml README.md secret [root@elasticsearch01 rbd]# cp -a ./rbd /k8s/yaml/volumes/

2、k8s集群节点安装ceph客户端

[root@elasticsearch01 ceph]# yum install ceph-common

3、修改rbd-with-secret.yaml配置文件

修改后配置如下：

[root@elasticsearch01 rbd]# cat rbd-with-secret.yaml apiVersion: v1 kind: Pod metadata: name: rbd2 spec: containers: - image: kubernetes/pause name: rbd-rw volumeMounts: - name: rbdpd mountPath: /mnt/rbd volumes: - name: rbdpd rbd: monitors: - '10.0.4.10:6789' - '10.0.4.13:6789' - '10.0.4.15:6789' pool: rbd-k8s image: cephimage1 fsType: ext4 readOnly: true user: admin secretRef: name: ceph-secret

如下参数根据实际情况修改：

monitors：这是 Ceph集群的monitor 监视器，Ceph 集群可以配置多个 monitor，本配置3个mon

pool：这是Ceph集群中存储数据进行归类区分使用，这里用的pool为rbd-ceph

image：这是Ceph 块设备中的磁盘映像文件，这里用的是cephimage1

fsType：文件系统类型，默认使用 ext4 即可

readOnly：是否为只读，这里测试使用只读即可

user：这是Ceph Client访问Ceph存储集群所使用的用户名，这里我们使用admin 即可

keyring：这是Ceph集群认证需要的密钥环，搭建Ceph存储集群时生成的ceph.client.admin.keyring

imageformat：这是磁盘映像文件格式，可以使用 2，或者老一些的1，内核版本比较低的使用1

imagefeatures：这是磁盘映像文件的特征，需要uname -r查看集群系统内核所支持的特性，这里Ceontos7.4内核版本为3.10.0-693.el7.x86_64只支持layering

4、使用ceph认证秘钥

在集群中使用secret更方便易于扩展且安全

[root@ceph01 ~]# cat /etc/ceph/ceph.client.admin.keyring [client.admin] key = AQBHVp9bPirBCRAAUt6Mjw5PUjiy/RDHyHZrUw== [root@ceph01 ~]# grep key /etc/ceph/ceph.client.admin.keyring |awk '{printf "%s", $NF}'|base64QVFCSFZwOWJQaXJCQ1JBQVV0Nk1qdzVQVWppeS9SREh5SFpyVXc9PQ==

kubernetes1.13.1集群使用ceph rbd块存储

5、创建ceph-secret

[root@elasticsearch01 rbd]# cat secret/ceph-secret.yaml apiVersion: v1kind: Secretmetadata: name: ceph-secrettype: "kubernetes.io/rbd"data: key: QVFCSFZwOWJQaXJCQ1JBQVV0Nk1qdzVQVWppeS9SREh5SFpyVXc9PQ== [root@elasticsearch01 rbd]# kubectl create -f secret/ceph-secret.yaml secret/ceph-secret created

6、创建pod测试rbd

按照官网的案例直接创建即可

[root@elasticsearch01 rbd]# kubectl create -frbd-with-secret.yaml

但是生产环境中不直接使用volumes，他会随着pods的创建儿创建，删除而删除，数据得不到保存，如果需要数据不丢失，需要借助pv和pvc实现

7、创建ceph-pv

注意rbd是读写一次，只读多次，目前还不支持读写多次，我们日常使用rbd映射磁盘时也是一个image只挂载一个客户端上；cephfs可以支持读写多次

[root@elasticsearch01 rbd]# cat rbd-pv.yaml apiVersion: v1 kind: PersistentVolume metadata: name: ceph-rbd-pv spec: capacity: storage: 20Gi accessModes: - ReadWriteOnce rbd: monitors: - '10.0.4.10:6789' - '10.0.4.13:6789' - '10.0.4.15:6789' pool: rbd-k8s image: cephimage2 user: admin secretRef: name: ceph-secret fsType: ext4 readOnly: false persistentVolumeReclaimPolicy: Recycle [root@elasticsearch01 rbd]# kubectl create -f rbd-pv.yaml persistentvolume/ceph-rbd-pv created [root@elasticsearch01 rbd]# kubectl get pvNAME CAPACITY ACCESS MODES RECLAIM POLICY STATUS CLAIM STORAGECLASS REASON AGE ceph-rbd-pv 20Gi RWO Recycle Available

8、创建ceph-pvc

[root@elasticsearch01 rbd]# cat rbd-pv-claim.yaml apiVersion: v1 kind: PersistentVolumeClaim metadata: name: ceph-rbd-pv-claim spec: accessModes: - ReadWriteOnce resources: requests: storage: 10Gi [root@elasticsearch01 rbd]# kubectl create -f rbd-pv-claim.yaml persistentvolumeclaim/ceph-rbd-pv-claim created [root@elasticsearch01 rbd]# kubectl get pvcNAME STATUS VOLUME CAPACITY ACCESS MODES STORAGECLASS AGE ceph-rbd-pv-claim Bound ceph-rbd-pv 20Gi RWO 6s [root@elasticsearch01 rbd]# kubectl get pvNAME CAPACITY ACCESS MODES RECLAIM POLICY STATUS CLAIM STORAGECLASS REASON AGE ceph-rbd-pv 20Gi RWO Recycle Bound default/ceph-rbd-pv-claim 5m28s

9、创建pod通过pv、pvc方式测试rbd

由于需要格式化挂载rbd，rbd空间比较大10G，需要时间比较久，大概需要几分钟

[root@elasticsearch01 rbd]# cat rbd-pv-pod.yaml apiVersion: v1 kind: Pod metadata: name: ceph-rbd-pv-pod1 spec: containers: - name: ceph-rbd-pv-busybox image: busybox command: ["sleep", "60000"] volumeMounts: - name: ceph-rbd-vol1 mountPath: /mnt/ceph-rbd-pvc/busybox readOnly: false volumes: - name: ceph-rbd-vol1 persistentVolumeClaim: claimName: ceph-rbd-pv-claim [root@elasticsearch01 rbd]# kubectl create -f rbd-pv-pod.yaml pod/ceph-rbd-pv-pod1 created [root@elasticsearch01 rbd]# kubectl get podsNAME READY STATUS RESTARTS AGE busybox 1/1 Running 432 18d ceph-rbd-pv-pod1 0/1 ContainerCreating 0 19s

报错如下

MountVolume.WaitForAttach failed for volume "ceph-rbd-pv" : rbd: map failed exit status 6, rbd output: rbd: sysfs write failed RBD image feature set mismatch. Try disabling features unsupported by the kernel with "rbd feature disable". In some cases useful info is found in syslog - try "dmesg | tail". rbd: map failed: (6) No such device or address

解决方法

禁用一些特性，这些特性在centos7.4内核上不支持，所以生产环境中k8s及相关ceph最好使用内核版本高的系统做为底层操作系统

rbd feature disable rbd-k8s/cephimage2 exclusive-lock object-map fast-diff deep-flatten

[root@ceph01 ~]# rbd feature disable rbd-k8s/cephimage2 exclusive-lock object-map fast-diff deep-flatten

1、k8s集群端验证

[root@elasticsearch01 rbd]# kubectl get pods -o wideNAME READY STATUS RESTARTS AGE IP NODE NOMINATED NODE READINESS GATES busybox 1/1 Running 432 18d 10.254.35.3 10.2.8.65 ceph-rbd-pv-pod1 1/1 Running 0 3m39s 10.254.35.8 10.2.8.65 [root@elasticsearch02 ceph]# df -h |grep rbd/dev/rbd0 493G 162G 306G 35% /data /dev/rbd1 20G 45M 20G 1% /var/lib/kubelet/plugins/kubernetes.io/rbd/mounts/rbd-k8s-image-cephimage2 [root@elasticsearch02 ceph]# cd /var/lib/kubelet/plugins/kubernetes.io/rbd/mounts/rbd-k8s-image-cephimage2[root@elasticsearch02 rbd-k8s-image-cephimage2]# lslost+found [root@elasticsearch01 rbd]# kubectl exec -ti ceph-rbd-pv-pod1 sh/ # df -hFilesystem Size Used Available Use% Mounted onoverlay 49.1G 7.4G 39.1G 16% / tmpfs 64.0M 0 64.0M 0% /dev tmpfs 7.8G 0 7.8G 0% /sys/fs/cgroup /dev/vda1 49.1G 7.4G 39.1G 16% /dev/termination-log /dev/vda1 49.1G 7.4G 39.1G 16% /etc/resolv.conf /dev/vda1 49.1G 7.4G 39.1G 16% /etc/hostname /dev/vda1 49.1G 7.4G 39.1G 16% /etc/hosts shm 64.0M 0 64.0M 0% /dev/shm /dev/rbd1 19.6G 44.0M 19.5G 0% /mnt/ceph-rbd-pvc/busybox tmpfs 7.8G 12.0K 7.8G 0% /var/run/secrets/kubernetes.io/serviceaccount tmpfs 7.8G 0 7.8G 0% /proc/acpi tmpfs 64.0M 0 64.0M 0% /proc/kcore tmpfs 64.0M 0 64.0M 0% /proc/keys tmpfs 64.0M 0 64.0M 0% /proc/timer_list tmpfs 64.0M 0 64.0M 0% /proc/timer_stats tmpfs 64.0M 0 64.0M 0% /proc/sched_debug tmpfs 7.8G 0 7.8G 0% /proc/scsi tmpfs 7.8G 0 7.8G 0% /sys/firmware / # cd /mnt/ceph-rbd-pvc/busybox//mnt/ceph-rbd-pvc/busybox # lslost+found /mnt/ceph-rbd-pvc/busybox # touch ceph-rbd-pods/mnt/ceph-rbd-pvc/busybox # lsceph-rbd-pods lost+found /mnt/ceph-rbd-pvc/busybox # echo busbox>ceph-rbd-pods /mnt/ceph-rbd-pvc/busybox # cat ceph-rbd-pods busbox [root@elasticsearch02 ceph]# cd /var/lib/kubelet/plugins/kubernetes.io/rbd/mounts/rbd-k8s-image-cephimage2[root@elasticsearch02 rbd-k8s-image-cephimage2]# lsceph-rbd-pods lost+found

2、ceph集群端验证

[root@ceph01 ~]# ceph dfGLOBAL: SIZE AVAIL RAW USED %RAW USED 65.9TiB 58.3TiB 7.53TiB 11.43 POOLS: NAME ID USED %USED MAX AVAIL OBJECTS rbd-es 1 1.38TiB 7.08 18.1TiB 362911 .rgw.root 2 1.14KiB 0 18.1TiB 4 default.rgw.control 3 0B 0 18.1TiB 8 default.rgw.meta 4 46.9KiB 0 104GiB 157 default.rgw.log 5 0B 0 18.1TiB 345 default.rgw.buckets.index 6 0B 0 104GiB 2012 default.rgw.buckets.data 7 1.01TiB 5.30 18.1TiB 2090721 default.rgw.buckets.non-ec 8 0B 0 18.1TiB 0 rbd-k8s 9 137MiB 0 18.1TiB 67

---------------------------------------

本文转自三杯水博客51CTO博客

Kubernetes

Excel教程，如何使用Excel函数计数进行数据统计

727 2022-05-28

kubernetes1.13.1 集群 使用ceph rbd块存储

Excel中如何计算年龄

Excel教程，如何使用Excel函数计数进行数据统计

Excel中如何插入表格，分步教程

推荐文章

企业生产管理是什么，企业生产管理软件

进盘点进销存软件排行榜前十名

进销存系统哪个简单好用？进销存系统优点

工厂生产管理（工厂生产管理流程及制度）

生产管理软件，机械制造业生产管理，制造业生产过程管理软件

进销存软件和ERP有什么区别？进销存与erp软件理解

进销存如何进行库存管理

如何利用excel制作销售订单管理系统？

数据库订单管理系统有哪些功能？数据库订单管理系统怎么设计？

什么是数据库管理系统？

最近发表

热评文章

零代码开发是什么？2022低代码平台排行榜

智能进销存库存管理系统（智慧进销存）

在线文档哪家强？8款在线文档编辑软件推荐

WPS2016怎么绘制简单的价格表?

定制订单管理系统（为特定需求定制的订单管理系统）

什么是在线文档？怎么发在线文档

友情链接