1.容器文件系统打包
将容器的文件系统打包成tar文件,也就是把正在运行的容器直接导出为tar包的镜像文件.
export(导出—>文件与文件系统)
docker export -o mybox123.tar 88d6209f1d08
scp mybox123.tar [email protected]:/opt
导入镜像归档文件到其他宿主机
import(导入)
docker import /opt/mybox123.tar erfa:v1
docker image ls
REPOSITORY TAG IMAGE ID CREATED SIZE
erfa v1 3d7838c617db 16 seconds ago 1.24MB
注意:
如果导入镜像时没有起名字,随后可以单独起名字(没有名字和tag),可以手动加tag
docker tag 3d7838c617db xxx:v1
docker tag erfa:v1 hhh:v1
2.通过容器创建本地镜像
背景:
容器运行起来后,又在里面做了一些操作,并且要把结果保存到镜像里
方案:
使用docker commit指令,把一个正在运行的容器,直接提交为一个镜像,commit是提交的意思.
docker attach mybox123
touch 555.txx
docker commit 88d6209f1d08(容器id) erfa:v2
docker run -it --name=aaa 688fb919d0cb /bin/sh
docker attach aaa
/ #
/ #
/ # ls
123.txt 555.txt a.sh bin dev etc home proc root sys tmp
docker commit -m "my images version" -a "erfa" 88d6209f1d08 hfr:v1
-m "添加注释"
-a 作者
-p 提交时暂停容器运行
init层的存在,是为了避免执行docker commit时,把Docker对自己/etc/hosts等文件的修改,也一起提交掉.
docker attach mybox123
/ # cat /etc/hosts
127.0.0.1 localhost
::1 localhost ip6-localhost ip6-loopback
fe00::0 ip6-localnet
ff00::0 ip6-mcastprefix
ff02::1 ip6-allnodes
ff02::2 ip6-allrouters
172.19.0.2 88d6209f1d08 ****
3.镜像迁移(–>镜像)
save(导出)
docker save -o redis123.tar redis
scp redis123.tar [email protected]:/opt/
The authenticity of host '192.168.10.55 (192.168.10.55)' can't be established.
ECDSA key fingerprint is SHA256:q+5D+Hh4M42GRWxjpk8Y9bBy4fLkrI8tynwq4QxCG7A.
ECDSA key fingerprint is MD5:a0:4b:84:4a:4a:1b:3b:82:18:22:b3:0e:ff:e2:c1:1d.
Are you sure you want to continue connecting (yes/no)? yes
Warning: Permanently added '192.168.10.55' (ECDSA) to the list of known hosts.
[email protected]'s password:
redis123.tar 100% 111MB 22.2MB/s
load(导入)
docker load < /opt/redis123.tar
docker image ls
REPOSITORY TAG IMAGE ID CREATED SIZE
redis latest 7faaec683238 3 weeks ago 113MB
注意:
1.tar文件的名称和报错的镜像名称没有关系
2.导入的镜像如果没有名称,自己打tag起名字