How to deal with Docker in half a day and Docker in half a day

How to deal with Docker in half a day and Docker in half a day

 

In fact, the volume ker is still very limited in real business scenarios. The Dockerfile script is not so easy to write, and some applications are not so well installed.

Don't talk nonsense. Teach you how to deal with docker for half a day!

 

Install dependencies and docker

Http://down.51cto.com/data/699208 download path

Rpm-ivh epel-release-6-8.noarch.rpm

 

Yum install docker-io-y

Start docker

Service docker start

Search for public container Images

Docker search centos6.6

Fuzzy search is supported, but do not think about how good a public container is. You need to build your own suitable business.

NAME                                  DESCRIPTION                                     STARS     OFFICIAL   AUTOMATEDliangtong/centos6.6-httpd                                                             2                    incu6us/centos6.6-with-nginx          Wav server for FreeCall                         0                    [OK]eliezio/centos6.6-devtoolset2-gtest   Docker image based on Centos 6.6 suitable ...   0                    [OK]chrisgeorge/centos6.6-py2.6           CentOS 6.6 with Python 2.6                      0                    [OK]leonion/centos6.6                     centos6.6                                       0                    heilee/centos6.6                                                                      0                    karthi12345/centos6.6                                                                 0                    kalramain/centos6.6-mysql55           mysql5.5 installed on centos6.6                 0                    

Attach an image container

Docker pull chrisgeorge/centos6.6-py2.6 <NAME>

Trial Run

Docker run-I-t chrisgeorge/centos6.6-py2.6/bin/bash

In this way, you can log on to your pre-designed container.

 

Install an application
Yum install openssh-server
# Modify the content in the/etc/ssh/sshd_config file
PermitRootLogin yes
UsePAM no
Ssh-keygen-q-N ""-t dsa-f/etc/ssh/ssh_host_dsa_key
Ssh-keygen-q-N ""-t rsa-f/etc/ssh/ssh_host_rsa_key
Mkdir/var/run/sshd
Passwd logon Password
/Etc/init. d/sshd start

Update Image
Docker commit ID <name>

Delete an image

# Docker rmi <neme>

Start
Docker run-d-p 22-p 8022: 8000 chrisgeorge/centos6.6-py2.6/usr/sbin/sshd-D

Map port 8000 of the container to port 8022 Of The docker server, and randomly map port 22 of the container

[root@SERVER docker]# docker psCONTAINER ID        IMAGE               COMMAND               CREATED             STATUS              PORTS                                           NAMES0c65edbc3f3d        wy                  "/usr/sbin/sshd -D"   22 minutes ago      Up 22 minutes       0.0.0.0:32769->22/tcp, 0.0.0.0:8022->8000/tcp   mad_poitras

Backup Image
Docker save chrisgeorge/centos6.6-py2.6>/root/docker-pmd.tar

Restore an image
Docker load </root/docker-pmd.tar

 

To run an image, docker must be installed on each machine.

 

Dockerfile

Script:/home/docker/Dockerfile

FROM chrisgeorge/centos6.6-py2.6 # inherited parent container MAINTAINER wonter # RUN yum install nginx # install nginxRUN echo "root: root "| chpasswd # Set Password EXPOSE 22 # Set port CMD/etc/init. d/nginx start # start the service

# Docker build-t wonter.