1、打包

$root@docker1 \~$ # docker save -o centos.tar centos:latest

$root@docker1 \~$ # systemctl start docker

$root@docker1 \~$ # docker ps -all

CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES

e84261634543 centos:latest "/bin/bash" 20 hours ago Exited (0) 2 minutes ago c0

$root@docker1 \~$ # docker rm c0

$root@docker1 \~$ # docker load -i centos.tar

$root@docker1 \~$ # docker run -it --name c0 centos:latest /bin/bash

$root@docker1 \~$ # docker start c0

$root@docker1 \~$ # docker attach c0

$root@c8d84a3be144 /$ # curl -o /etc/yum.repos.d/CentOS-Base.repo https://mirrors.aliyun.com/repo/Centos-vault-8.5.2111.repo

$root@c8d84a3be144 /$ # yum clean all && yum makecache

$root@c8d84a3be144 /$ # yum -y install epel-release

$root@c8d84a3be144 /$ # read escape sequence

$root@docker1 \~$ # docker ps -all

CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES

c8d84a3be144 centos:latest "/bin/bash" 30 minutes ago Up 8 minutes c0

2、从容器导出tar包

$root@docker1 \~$ # docker export -o centos_yum.tar c0 #容器包

$root@docker1 \~$ # ls #查看新生成的tar包

anaconda-ks.cfg centos.tar#镜像包 centos_yum.tar

3、从tar包导入镜像

docker import -m 说明内容 centos_yum.tar centos:yum

$root@docker1 \~$ # docker import -m yum centos_yum.tar centos:yum #生成镜像

4、查看镜像新的镜像不需要配置yum

$root@docker \~$ # docker run -it --name c1 centos:httpd /bin/bash

5、练习创建一个镜像，包含httpd服务，名称centos版本httpd

$root@ac4bae6c2a0d /$ # rm -rf /etc/yum.repos.d/*

$root@ac4bae6c2a0d /$ # curl -o /etc/yum.repos.d/CentOS-Base.repo https://mirrors.aliyun.com/repo/Centos-vault-8.5.2111.repo

$root@ac4bae6c2a0d /$ # yum clean all && yum makecache

$root@ac4bae6c2a0d /$ # yum -y install httpd

$root@ac4bae6c2a0d /$ # echo "docker_httpd_server" > /var/www/html/index.html

$root@ac4bae6c2a0d /$ # http -k start

$root@ac4bae6c2a0d /$ # curl localhost

docker_httpd_server

$root@docker \~$ # docker export -o centos_yum.tar c0

$root@docker \~$ # docker import -m yum centos_yum.tar centos:httpd

$root@docker \~$ # docker run -it --name c1 centos:httpd /bin/bash

$root@c75fd2f052ea /$ # httpd -k start

$root@c75fd2f052ea /$ # curl localhost

docker_httpd_server

$root@docker \~$ # docker inspect c1

6、在外部调用指令

$root@docker \~$ # docker exec c0 ip a

$root@docker \~$ # docker exec c0 ifconfig

7、外部创建文件

$root@docker \~$ # docker exec c1 touch /opt/test.txt

$root@docker \~$ # docker exec c1 ls /opt/

test.txt

二、总结

1.镜像的迁移

1.打包

docker save -o centos.tar centos: latest

2.加载

docker load -i centos.tar

docker images

#停用关闭容器

docker stop c0 c1;docker rm c0 c1

删除镜像

docker rmi centos:latest

2.创建镜像

1.创建容器

docker run -it -- name c0 centos:latest /bin/bash

下载阿里云仓库

clean, ,,makecache

ctrl p q

2.容器打包

docker export -o centos_yum. tar c0

3.引入镜像

docker import -m "update yum repo" centos_yum. tar

centos : yum

docker image ls

3.ip网络

1.交互式

docker start c0

docker attach c0

yum -y install iproute

ip a

2.inspect

docker inspect c0

3.exec

docker exec c0 yum -y install net-tools

docker exec c0 ifconfig

4.端口映射

1.指定端口映射

docker run -it -- name c0 -p70:80 centos:httpd

/bin/bash

2.随机端口映射

docker run -it -- name c1 -p80 centos:httpd

/bin/bash

3.指定其他ip的端口映射

ifconfig ens33:0 192.168.71.51 broadcast

192.168.71.51 netmask 255.255.255.255 up

docker run -it -- name c2 -p192.168.71.51 :: 80

centos:httpd /bin/bash

5.持久化

1.挂载

docker run -it -- name c3 -v /abc:/def centos:httpd

/bin/bash

touch /abc/aaa. txt

docker exec c3 ls /def

docker 数据存储

删除镜像

下载阿里云仓库

clean, ,,makecache