docker1

Docker笔记

1，

https://gitlab-demo.com

Docker官网：https://docs.docker.com/install/overview/

有两个版本：

Docker is available in two editions:

Community Edition (CE) 是免费的版本
Enterprise Edition (EE) 是收费的版本

vagrant 安装 centos 7

vagrant + virtualBOX 安装

https://my.oschina.net/cxgphper/blog/1940644

安装Docker

系统centos7

https://docs.docker.com/install/linux/docker-ce/centos/

也可以在vagrantfile中添加安装docker shell

Vagrant up

Docker machine 在本地使用

#docker-machine create demo

Docker-machine ls

Docker-machine ssh demo 进入虚机demo

Docker-machine stop demo1

Docer-machine env demo #print出dome虚机的env

#eval $(docker-machine env demo)

#docker version #可以看到demo的虚机docker版本

搜索docker playground

https://labs.play-with-docker.com/

在 https://www.docker.com/

Docker for windows7/windows10安装以及Docker id注册

https://blog.csdn.net/xzxedu/article/details/82012297

参考docker

https://www.jianshu.com/p/38649ff222ac

引导入门：

https://blog.csdn.net/sD7O95O/article/details/80193587

[root@zizhen02 ~]# ps -ef |grep docker

root 7661 1 0 14:49 ? 00:00:03 /usr/bin/dockerd -H fd:// --containerd=/run/containerd/containerd.sock

root 9829 9790 0 16:32 pts/1 00:00:00 grep --color=auto docker

[root@zizhen02 ~]#

#sudo docker image ls

官方给出image获取的 Docker Hub

https://hub.docker.com/search?q=&type=image

去掉sudo：

把vagrant 添加到组docker 里

#sudo groupadd docker

#sudo gpasswd -a vagrant docker

#docker version 权限还是拒绝

#sudo service docker restart 重启docker服务

#docker version

退出重新登。

官网可查看更多命令：https://docs.docker.com/engine/reference/commandline/docker/

#docker image ls

#docker pull hello-world 获取hello-world镜像

#docker run hello-world 运行

#mkdir hello-world

#cd hello-world

#vim hello.c

-----

#include<stdio.h>

int main()

{

printf("hello docker\n");

}

-----

#yum install gcc glibc-static

# gcc -static hello.c -o hello

[root@zizhen02 hello-world]# ls

hello hello.c

# cat Dockerfile

FROM scratch

ADD hello /

CMD ['/hello']

[root@zizhen02 hello-world]# docker build -t xiaoli163/hello-world .

Sending build context to Docker daemon 860.7kB

Step 1/3 : FROM scratch

--->

Step 2/3 : ADD hello /

---> d3ce8749b11d

Step 3/3 : CMD ['/hello']

---> Running in 4d72aa29e7a3

Removing intermediate container 4d72aa29e7a3

---> a821094d0306

Successfully built a821094d0306

Successfully tagged xiaoli163/hello-world:latest

[root@zizhen02 hello-world]#

# docker image ls

REPOSITORY TAG IMAGE ID CREATED SIZE

xiaoli163/hello-world latest a821094d0306 37 seconds ago 857kB

ubuntu 14.04 5dbc3f318ea5 6 weeks ago 188MB

hello-world latest fce289e99eb9 2 months ago 1.84kB

centos latest 1e1148e4cc2c 3 months ago 202MB

[root@zizhen02 hello-world]#

[root@zizhen02 hello-world]# ls -lh

total 848K

-rw-r--r-- 1 root root 40 Mar 11 23:02 Dockerfile

-rwxr-xr-x 1 root root 837K Mar 11 22:55 hello

-rw-r--r-- 1 root root 64 Mar 11 22:48 hello.c

[root@zizhen02 hello-world]#

#查看docker的分层

[root@zizhen02 hello-world]# docker history a821094d0306

IMAGE CREATED CREATED BY SIZE COMMENT

a821094d0306 4 minutes ago /bin/sh -c #(nop) CMD ["/bin/sh" "-c" "['/h… 0B

d3ce8749b11d 4 minutes ago /bin/sh -c #(nop) ADD file:68a0159a95ced5415… 857kB

[root@zizhen02 hello-world]#

报错：

[root@zizhen02 hello-world]# docker run xiaoli163/hello-world

docker: Error response from daemon: OCI runtime create failed: container_linux.go:344: starting container process caused "exec: \"/bin/sh\": stat /bin/sh: no such file or directory": unknown.

Docker组件container

[root@zizhen02 ~]# docker container ls

CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES

97b6ec615252 nginx "nginx -g 'daemon of…" About an hour ago Up About an hour 0.0.0.0:443->443/tcp, 0.0.0.0:8001->80/tcp nginxv2

5cb5e2fb6d11 nginx "nginx -g 'daemon of…" About an hour ago Up About an hour 192.168.1.107:8000->80/tcp mynginx

2ce4f13ed654 nginx "nginx -g 'daemon of…" About an hour ago Up About an hour 0.0.0.0:32768->80/tcp condescending_wilbur

[root@zizhen02 ~]# docker images

REPOSITORY TAG IMAGE ID CREATED SIZE

xiaoli163/hello-world latest a821094d0306 18 hours ago 857kB

nginx latest 881bd08c0b08 7 days ago 109MB

ubuntu 14.04 5dbc3f318ea5 6 weeks ago 188MB

hello-world latest fce289e99eb9 2 months ago 1.84kB

centos latest 1e1148e4cc2c 3 months ago 202MB

[root@zizhen02 ~]# docker container ls -a

CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES

97b6ec615252 nginx "nginx -g 'daemon of…" About an hour ago Up About an hour 0.0.0.0:443->443/tcp, 0.0.0.0:8001->80/tcp nginxv2

5cb5e2fb6d11 nginx "nginx -g 'daemon of…" About an hour ago Up About an hour 192.168.1.107:8000->80/tcp mynginx

2ce4f13ed654 nginx "nginx -g 'daemon of…" About an hour ago Up About an hour 0.0.0.0:32768->80/tcp condescending_wilbur

058aa0c78e3d xiaoli163/hello-world "/bin/sh -c ['/hello…" 18 hours ago Created goofy_gagarin

2383acd50abe xiaoli163/hello-world "/bin/sh -c ['/hello…" 18 hours ago Created loving_franklin

3dcf3c566c78 xiaoli163/hello-world "/bin/sh -c ['/hello…" 18 hours ago Created inspiring_antonelli

4a62f05f9141 hello-world "/hello" 20 hours ago Exited (0) 20 hours ago flamboyant_ellis

7327630800a1 hello-world "/hello" 2 days ago Exited (0) 2 days ago infallible_chatelet

[root@zizhen02 ~]#

[root@zizhen02 ~]# docker run -it centos

[root@db568adf5c1f /]#

[root@db568adf5c1f /]# ip a

bash: ip: command not found

[root@db568adf5c1f /]# ip add li

bash: ip: command not found

[root@db568adf5c1f /]# ip link show

bash: ip: command not found

[root@db568adf5c1f /]# ip

bash: ip: command not found

[root@db568adf5c1f /]# ifconfig

bash: ifconfig: command not found

[root@db568adf5c1f /]# ls

anaconda-post.log bin dev etc home lib lib64 media mnt opt proc root run sbin srv sys tmp usr var

[root@db568adf5c1f /]# vim

bash: vim: command not found

[root@db568adf5c1f /]# vi

[root@zizhen02 ~]# docker container ls

CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES

db568adf5c1f centos "/bin/bash" About a minute ago Up About a minute amazing_herschel

97b6ec615252 nginx "nginx -g 'daemon of…" About an hour ago Up About an hour 0.0.0.0:443->443/tcp, 0.0.0.0:8001->80/tcp nginxv2

5cb5e2fb6d11 nginx "nginx -g 'daemon of…" About an hour ago Up About an hour 192.168.1.107:8000->80/tcp mynginx

2ce4f13ed654 nginx "nginx -g 'daemon of…" 2 hours ago Up 2 hours 0.0.0.0:32768->80/tcp condescending_wilbur