http://blog.csdn.net/asd05txffh/article/details/51159416 为了验证Docker挂载共享存储卷,而需要安装一个ceph的环境。由于网络延迟等原因,基于官方知道文档基于rpm的部署方式容器中途安装失败。幸而,ceph的仓库中提供了一套将ceph所有的组件都部署于一个容器镜像中的all-in-one镜像,使用起来非常的方便。但是,demo镜像只用用来体验和做简单的使用测试,不能用户任何生产环境。生产环境的部署,ceph的仓库下同时包含了完整组件的镜像以及ansible自动化部署脚本。 pull ceph/demo镜像 [root@localhost vagrant]# docker pull ceph/demo Using default tag: latest latest: Pulling from ceph/demo 759d6771041e: Pull complete 8836b825667b: Pull complete c2f5e51744e6: Pull complete a3ed95caeb02: Pull complete 2a3d79c9e3c9: Pull complete f78d0723009e: Pull complete fe5a2cfd20a6: Pull complete 6711b6d1f909: Pull complete 2d0412ff2a85: Pull complete Digest: sha256:dedc1e8266bdd376b831c543d309fce1bcd068d6b775513fab2ae639fb8630e6 Status: Downloaded newer image for ceph/demo:latest 1 2 3 4 5 6 7 8 9 10 11 12 13 14 1 2 3 4 5 6 7 8 9 10 11 12 13 14 2 启动ceph/demo docker run -d --net=host -v /etc/ceph:/etc/ceph --name=ceph -e MON_IP=172.28.0.2 -e CEPH_NETWORK=172.28.0.0/24 ceph/demo [root@localhost ceph]# docker ps CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES fa4d282fd3fe ceph/demo "/entrypoint.sh" About a minute ago Up About a minute ceph [root@localhost ceph]# root@localhost:/# ps -ef UID PID PPID C STIME TTY TIME CMD root 1 0 0 01:52 ? 00:00:00 /usr/bin/python /usr/bin/ceph --cluster ceph -w root 21 1 0 01:52 ? 00:00:00 ceph-mon --cluster ceph -i localhost --public-addr 172.28.0.2 root 180 1 0 01:52 ? 00:00:00 ceph-osd --cluster ceph -i 0 -k /var/lib/ceph/osd/ceph-0/keyring root 390 1 0 01:52 ? 00:00:00 ceph-mds --cluster ceph -i 0 root 444 1 0 01:52 ? 00:00:00 radosgw -c /etc/ceph/ceph.conf -n client.radosgw.gateway -k /var/lib/ceph/radosgw/localhost/keyring --rgw-socket-path= --rgw-frontends=civetweb port=80 root 445 1 0 01:52 ? 00:00:00 /usr/bin/python /usr/bin/ceph-rest-api --cluster ceph -n client.admin root 713 0 0 01:54 ? 00:00:00 bash root 727 713 0 01:54 ? 00:00:00 ps -ef root@localhost:/# 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 3 在集群中其他机器中安装ceph-client #安装rpm包 yum -y install ceph-common #拷贝ceph/demon /etc/ceph/ceph.client.admin.keyring到client scp {ceph-mon}:/etc/ceph/ceph.client.admin.keyring {ceph-cleint}@/etc/ceph #修改ceph-client上ceph.conf vi /etc/ceph/ceph.conf [global] mon host = 172.28.0.2 #查询ceph状态 [root@node2 ceph]# ceph -s cluster 4f677727-ef6d-456c-9318-69711d5896a9 health HEALTH_OK monmap e1: 1 mons at {localhost=172.28.0.2:6789/0} election epoch 2, quorum 0 localhost mdsmap e5: 1/1/1 up {0=0=up:active} osdmap e16: 1 osds: 1 up, 1 in flags sortbitwise pgmap v19: 128 pgs, 9 pools, 2808 bytes data, 190 objects 4297 MB used, 4272 MB / 8570 MB avail 128 active+clean 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 4 在ceph中创建一个块设备 [root@node2 ceph]# rbd create --size 4096 docker_data [root@node2 ceph]# rbd ls docker_data [root@node2 ceph]# 1 2 3 4 1 2 3 4 5 映射到本地快设备 [root@node2 ceph]# rbd map docker_data --name client.admin [root@node2 ceph]# rbd showmapped id pool image snap device 0 rbd docker_data - /dev/rbd0 [root@node2 ceph]# 1 2 3 4 5 1 2 3 4 5 6 格式化 [root@node2 ceph]# mkfs.ext4 /dev/rbd0 mke2fs 1.42.9 (28-Dec-2013) Discarding device blocks: 完成 文件系统标签= OS type: Linux 块大小=4096 (log=2) 分块大小=4096 (log=2) Stride=1024 blocks, Stripe width=1024 blocks 262144 inodes, 1048576 blocks 52428 blocks (5.00%) reserved for the super user 第一个数据块=0 Maximum filesystem blocks=1073741824 32 block groups 32768 blocks per group, 32768 fragments per group 8192 inodes per group Superblock backups stored on blocks: 32768, 98304, 163840, 229376, 294912, 819200, 884736 Allocating group tables: 完成 正在写入inode表: 完成 Creating journal (32768 blocks): 完成 Writing superblocks and filesystem accounting information: 完成 [root@node2 ceph]# 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 7 挂载到目录 [root@node2 ceph]# mount /dev/rbd0 /mnt/data [root@node2 ceph]# mount |grep /mnt/data /dev/rbd0 on /mnt/data type ext4 (rw,relatime,stripe=1024,data=ordered) [root@node2 ceph]# 1 2 3 4 1 2 3 4 8 docker volume使用共享存储 docker run -v /mnt/data:/var/lib/mysql --name some-mariadb -e MYSQL_ROOT_PASSWORD=ffh-db -d mariadb 1 1 [1]https://github.com/ceph
基于docker ceph环境快速搭建体验
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