docker 数据存储（thirty-five day）

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
c0
[root@docker1 ~]# docker load -i centos.tar
[root@docker1 ~]# docker run -it --name c0 centos:latest  /bin/bash

[root@docker1 ~]# docker start c0
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 /]# 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 ```bash 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 ```bash 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 ```bash 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 ```bash 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** ```bash docker run -it -- name c3 -v /abc:/def centos:httpd /bin/bash touch /abc/aaa. txt docker exec c3 ls /def ```