需求
：甲机器内的ORACL 容器里已导入数据，欲迁移到已机器（192.168.1.114), 使用仓库上传方式， 导出的镜像太大，因此可以使用docker save 和docker load方式迁移
步骤：
甲机器：
[root@CentOS8 ~]# docker commit oracle11g md
[root@CentOS8 ~]# docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
md latest e76cf1687e46 11 seconds ago 7.83GB
[root@CentOS8 home]# docker save md -o /md.tar
[root@CentOS8 home]# scp /home/md.tar root@192.168.1.114:/
The authenticity of host '192.168.1.114 (192.168.1.114)' can't be established.
ECDSA key fingerprint is SHA256:7yIPWkhWBZbWotM7k1T3M3vXHcDjRimyZuoIGYU/sW4.
Are you sure you want to continue connecting (yes/no/[fingerprint])? yes
Warning: Permanently added '192.168.1.114' (ECDSA) to the list of known hosts.
root@192.168.1.114's password:
md.tar 1% 148MB 10.5MB/s 11:41 ETA
md.tar 4% 345MB 10.7MB/s 11:10 ETA
md.tar 27% 2038MB 11.4MB/s 08:02 ETA
md.tar 100% 7533MB 10.8MB/s 11:35
已机器：
[root@SmartByDevServer ~]# docker load -i /md.tar
bab207619a1b: Loading layer 6.912GB/6.912GB
5f70bf18a086: Loading layer 1.024kB/1.024kB
be5668ce5ec1: Loading layer 904.7kB/904.7kB
082cf08b5c55: Loading layer 985.2MB/985.2MB
Loaded image: md:latest
[root@SmartByDevServer ~]# docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
md latest e76cf1687e46 3 days ago 7.83GB
[root@SmartByDevServer ~]# docker run -d --name docare -p 1521:1521 --restart=always md
a1a53cf0525dec9e7282f4931718f9c42066a0b2037a5dfb6627270cd0a6d018
如果docker run 时报错：
[root@SmartByDevServer ~]# docker run -d --name docare -p 1521:1521 md
9ebde2c8c91f59b835eff14613da122d8cebc5b1f7593ff14c161c52db7299d6
docker: Error response from daemon: driver failed programming external connectivity on endpoint docare (eb90e740c1ace4b521738bd5e6c1e632387412bbea2a80bf7b367021a49fc4eb): (iptables failed: iptables --wait -t nat -A DOCKER -p tcp -d 0/0 --dport 1521 -j DNAT --to-destination 172.17.0.6:1521 ! -i docker0: iptables: No chain/target/match by that name.
(exit status 1)).
可以重启下docker服务即可：
[root@SmartByDevServer ~]# systemctl restart docker
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