Docker 私有仓库恢复实例详解

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Docker 私有仓库恢复

之前openstack平台由于停电等影响，导致之前制作的registry 私有仓库的主机挂掉，还好数据挂载在nfs中，然后现在尝试重新启动恢复。

虚机安装nfs服务

apt-get install -y nfs-common

编辑 /etc/fstab

写入远程挂载地址

10.50.8.12:/export/DockerRepo /var/lib/docker/registry nfs defaults 0 0

然后进行挂载：

mount -a -v

输出如下结果，表明mount成功

root@docker-registry:/home/ubuntu# mount -a -v
mount.nfs: timeout set for Thu Mar 26 13:12:44 2015
mount.nfs: trying text-based options 'vers=4,addr=10.50.8.12,clientaddr=10.0.0.244'
nothing was mounted

可以用df来查看：

root@docker-registry:/home/ubuntu# df
Filesystem          1K-blocks  Used Available Use% Mounted on
/dev/vda1           165106028 1780156 156584392  2% /
none                 4    0     4  0% /sys/fs/cgroup
udev              8211996   12  8211984  1% /dev
tmpfs              1643392   348  1643044  1% /run
none                5120    0   5120  0% /run/lock
none              8216952    0  8216952  0% /run/shm
none               102400    0  102400  0% /run/user
10.50.8.12:/export/DockerRepo 515931136 683008 489017344  1% /var/lib/docker/registry

创建新的registry

命令如下

# docker run -d -p 5000:5000 -v /var/lib/docker/registry:/tmp/registry registry

其中－p是与主机进行端口映射，－v表示将主机的volume挂载到容器中，即将我们的nfs挂载到容器中，作为Docker 私有仓库的存储使用。

查看是否创建成功

用curl命令来search其中的仓库文件是否存在：

root@docker-registry:/var/lib/docker/registry/images# curl http://127.0.0.1:5000/v1/search
{"num_results": 8, "query": "", "results": [{"description": null, "name": "shipyard/rethinkdb"}, {"description": null, "name": "shipyard/shipyard"}, {"description": null, "name": "shipyard/shipyard-cli"}, {"description": null, "name": "library/mysql"}, {"description": null, "name": "library/ubuntu"}, {"description": null, "name": "library/registry"}, {"description": null, "name": "library/centos"}, {"description": null, "name": "tutum/influxdb"}]}

测试私有仓库

从私有仓库拉取ubuntu：14.04镜像。

root@docker-registry:/var/lib/docker/registry/images# docker pull 127.0.0.1:5000/ubuntu:14.04
Pulling repository 127.0.0.1:5000/ubuntu
2103b00b3fdf: Download complete 
511136ea3c5a: Download complete 
f0dde87450ec: Download complete 
76b658ecb564: Download complete 
4faa69f72743: Download complete 
Status: Downloaded newer image for 127.0.0.1:5000/ubuntu:14.04

然后可以通过docker images来查看存在的images：

root@docker-registry:/var/lib/docker/registry/images# docker images
REPOSITORY       TAG         IMAGE ID      CREATED       VIRTUAL SIZE
registry        latest       e33e81d7024c    5 days ago     413.7 MB
127.0.0.1:5000/ubuntu  latest       2103b00b3fdf    2 weeks ago     192.7 MB
127.0.0.1:5000/ubuntu  14.04        2103b00b3fdf    2 weeks ago     192.7 MB

从私有仓库只需要10多秒即可将ubuntu的200多m的镜像给pull下来。

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