1、查看镜像ID
# docker images
[root@localhost ~]# docker images REPOSITORY TAG IMAGE ID CREATED SIZE mytomcat 1.0 f8ec6dad9608 22 minutes ago 612MB centos latest 1e1148e4cc2c 7 weeks ago 202MB
2、选择要打包的镜像，执行打包命令
docker save : 将指定镜像保存成 tar 归档文件
语法：
docker save [options] image [image……]
options
-o :输出到的文件。
# docker save -o mytomcat.tar mytomcat:1.0
[root@localhost ~]# docker save -o mytomcat.tar mytomcat:1.0 [root@localhost ~]# [root@localhost ~]# ls anaconda-ks.cfg mytomcat.tar
3、scp远程复制到迁移的另一台服务器上
# scp -r mytomcat.tar [email protected]:/root/
[root@localhost ~]# scp -r mytomcat.tar root@192.168.2.207:/root/ The authenticity of host '192.168.2.207 (192.168.2.207)' can't be established. ECDSA key fingerprint is fa:8c:a3:e2:79:7e:cc:be:1e:14:35:6a:e7:45:de:95. Are you sure you want to continue connecting (yes/no)? yes Warning: Permanently added '192.168.2.207' (ECDSA) to the list of known hosts. root@192.168.2.207's password: mytomcat.tar 100% 594MB 5.6MB/s 01:46 [root@localhost ~]#
4、到另一台服务器上导入
查看已有的镜像
# docker images
[root@localhost ~]# docker images REPOSITORY TAG IMAGE ID CREATED SIZE mysql latest 102816b1ee7d 4 weeks ago 486MB
导入镜像
# docker load -i mytomcat.tar
[root@localhost ~]# ls mytomcat.tar software [root@localhost ~]# [root@localhost ~]# docker load -i mytomcat.tar 071d8bd76517: Loading layer [==================================================>] 210.2MB/210.2MB cc30c42de5c4: Loading layer [==================================================>] 412.5MB/412.5MB Loaded image: mytomcat:1.0 [root@localhost ~]#
查看是否成功导入
[root@localhost ~]# docker images REPOSITORY TAG IMAGE ID CREATED SIZE mytomcat 1.0 f8ec6dad9608 Less than a second ago 612MB mysql latest 102816b1ee7d 4 weeks ago 486MB
end