docker(1)

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1.docker 安装：

lftp 172.25.254.251

get rhel7.tar

get ubuntu.tar

get docker-engine-1.10.3-1.el7.centos.x86_64.rpm

get docker-engine-selinux-1.10.3-1.el7.centos.noarch.rpm

rpm -ivh docker-engine-1.10.3-1.el7.centos.x86_64.rpm

rpm -ivh docker-engine-selinux-1.10.3-1.el7.centos.noarch.rpm

2.数据包的导入

[root@foundation17 ~]# docker load -i ubuntu.tar 数据包导入

3.建立容器：

[root@foundation17 ~]# docker run -it --name vm1 ubuntu //指定容器名称

root@b6e503aec1e3:/# [root@foundation17 ~]#

//////用ubuntu这个镜像生成一个名为vm1的容器///

[root@foundation17 ~]# docker run -it ubuntu //未制定容器名称

[root@foundation17 ~]# docker ps -a

CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES

c2c94bd4ef22 ubuntu "/bin/bash" 2 minutes ago Up 2 minutes silly_curie

a2798a01f075 ubuntu "/bin/bash" 4 minutes ago Up 8 seconds vm1

[root@foundation17 ~]# docker stop c2c94bd4ef22 //结束一个容器（用进程id结束）

c2c94bd4ef22

[root@foundation17 ~]# docker rm c2c94bd4ef22 //删除容器（用进程id删除）

c2c94bd4ef22

[root@foundation17 ~]# docker ps -a

CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES

a2798a01f075 ubuntu "/bin/bash" 5 minutes ago Up About a minute vm1

root@bd4961841626:/# [root@foundation17 ~]# docker attach vm1 //进入容器

root@bd4961841626:/# ls

bin dev home lib64 mnt proc run srv tmp var

boot etc lib media opt root sbin sys usr

root@bd4961841626:/# touch file{1..5} //相当与一个虚拟机

root@bd4961841626:/# ls

bin dev file1 file3 file5 lib media opt root sbin sys usr

boot etc file2 file4 home lib64 mnt proc run srv tmp var

[root@foundation17 ~]# docker pause vm1 //暂停容器

vm1

[root@foundation17 ~]# docker ps -a

CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES

bd4961841626 ubuntu "/bin/bash" 2 minutes ago Up 41 seconds (Paused) vm1

[root@foundation17 ~]# docker unpause vm1 //启动容器

vm1

[root@foundation17 ~]# docker ps -a

CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES

bd4961841626 ubuntu "/bin/bash" 3 minutes ago Up About a minute vm1

[root@foundation17 ~]# docker run -it --name vm2 ubuntu

root@aac0080d0606:/# [root@foundation17 ~]# docker run -it --name vm3 ubuntu

root@13e9f0e36ea0:/# [root@foundation17 ~]# docker run -it --name vm4 ubuntu

root@2e4adfc6ea87:/# [root@foundation17 ~]# docker run -it --name vm5 ubuntu

root@cf98619960fc:/# [root@foundation17 ~]#

[root@foundation17 ~]# docker ps -aq

cf98619960fc

2e4adfc6ea87

13e9f0e36ea0

aac0080d0606

bd4961841626

[root@foundation17 ~]# docker stop `docker ps -aq`

cf98619960fc

2e4adfc6ea87

13e9f0e36ea0

aac0080d0606

bd4961841626

容器内的数据提交：（docker commit vm3 ubuntu//提交vm3容器里面的数据到ubuntu镜像放到仓库）

[root@foundation17 ~]# docker commit vm3 ubuntu

sha256:ca9b1aa4a9aee738f632999bfad3baf5bda20b5a8b51de82b8f288a922cb4a66

[root@foundation17 ~]# docker stop vm3

vm3

[root@foundation17 ~]# docker rm vm3

vm3

[root@foundation17 ~]# docker run -it --name vm4 ubuntu

root@6cb52f07dcde:/# ls

bin dev file1 file3 file5 lib media opt root sbin sys usr

boot etc file2 file4 home lib64 mnt proc run srv tmp var

提交的内容在镜像里面的内容上面加一层：（镜像是只读的）

[root@foundation17 ~]# docker run -it --name vm1 ubuntu

root@59026e7f5104:/# ls

bin dev file1 file3 file5 lib media opt root sbin sys usr

boot etc file2 file4 home lib64 mnt proc run srv tmp var

root@59026e7f5104:/# rm -fr file*

root@59026e7f5104:/# ls

bin dev home lib64 mnt proc run srv tmp var

boot etc lib media opt root sbin sys usr

root@59026e7f5104:/# exit

exit

[root@foundation17 ~]# docker commit vm1 ubuntu

sha256:734d5eba88071735584a1c22519d9000d133b531df3dd7b56e6bbd0dca2abdd3

[root@foundation17 ~]# docker run -it --name vm8 ubuntu

root@e05171f7c0c7:/# ls

bin dev home lib64 mnt proc run srv tmp var

boot etc lib media opt root sbin sys usr

[root@foundation17 ~]# docker history ubuntu //查看镜像的层（最多不能超过127层）

IMAGE CREATED CREATED BY SIZE COMMENT

734d5eba8807 29 minutes ago /bin/bash 52 B

ca9b1aa4a9ae 51 minutes ago /bin/bash 28 B

07c86167cdc4 14 months ago /bin/sh -c #(nop) CMD ["/bin/bash"] 0 B

220d2912ab1d 14 months ago /bin/sh -c sed -i 's/^#\s*$deb.*universe$$/ 1.895 kB

cc77a2e3d72c 14 months ago /bin/sh -c echo '#!/bin/sh' > /usr/sbin/polic 194.5 kB

c8fa7cdceff3 14 months ago /bin/sh -c #(nop) ADD file:b9504126dc55908988 187.7 MB

////vm1里面新建文件后，提交，vm1里面的文件提交到ubuntu之后，ubuntu里面就有记录，再用镜像ubuntu建立容器，容器内部包含有vm1里面的文件。如果删除vm1里面新建的文件，再次提交，ubuntu里面的内容就会被覆盖掉。再次用ubuntu建立容器，新建立的容器不就没有最早vm1里面建立的文件。

复制文件到容器里面需要制定路径（即容器源）

[root@foundation17 ~]# docker cp /etc/passwd vm1

must specify at least one container source

[root@foundation17 ~]# docker cp /etc/passwd vm1:/

[root@foundation17 ~]# docker export -o vm2.tar vm1 //导出到当前目录，并命名为vm2.tar

[root@foundation17 ~]# docker save -o ubuntu.tar ubuntu:v1 // 将ubuntu:v1镜像制成 ubuntu:v1文件

[root@foundation17 ~]# docker run -d --name web -p 8000:80 nginx

3cca467e17717b7dd09dd997d7df4e2239e8505be8f0fc79ec11804c5365103d

[root@foundation17 ~]# docker ps

CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES

3cca467e1771 nginx "nginx -g 'daemon off" 15 seconds ago Up 11 seconds 443/tcp, 0.0.0.0:8000->80/tcp web

[root@foundation17 ~]# netstat -antlp | grep :8000

tcp6 0 0 :::8000 :::* LISTEN 16093/docker-proxy

[root@foundation17 ~]# docker diff vm1

C /root

C /root/.bash_history

A /passwd

D /file2

D /file5

D /file1

D /file3

D /file4

D：表示删除

A：表示增加add

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