使用dockerfile创建基于ubuntu的ssh容器：
1.创建目录
[root@test-devops home]# mkdir sshd_ubuntu
[root@test-devops home]# cd sshd_ubuntu/
[root@test-devops sshd_ubuntu]# touch Dockerfile run.sh
[root@test-devops sshd_ubuntu]#
2.编写run.sh脚本和认证文件
[root@test-devops sshd_ubuntu]# cat run.sh
#!/bin/bash
/usr/sbin/sshd -D
[root@test-devops sshd_ubuntu]# chmod +x run.sh
[root@test-devops sshd_ubuntu]#
[root@test-devops sshd_ubuntu]# chmod 400 authorized_keys
3.编写dockerFile
[root@test-devops sshd_ubuntu]# cat Dockerfile
# 继承的镜像
FROM ubuntu:14.04
# 作者信息
MAINTAINER from steven (www.opsnotes.net)
# 安装SSH服务和VIM服务
RUN apt-get install -y openssh-server vim
RUN mkdir -p /var/run/sshd
RUN mkdir -p /root/.ssh
RUN echo 'root:123qwer' |chpasswd
RUN sed -i "s/#UsePrivilegeSeparation.*/UsePrivilegeSeparation no/g" /etc/ssh/sshd_config
RUN sed -i "s/UsePAM.*/UsePAM no/g" /etc/ssh/sshd_config
RUN sed -i 's/^PermitRootLogin without-password/PermitRootLogin yes/g' /etc/ssh/sshd_config
# 取消PAM限制
RUN sed -i '/pam_loginuid.so/c session optional pam_loginuid.so' /etc/pam.d/sshd
# 复制文件，给脚本可执行权限
ADD authorized_keys /root/.ssh/authorized_keys
ADD run.sh /run.sh
RUN chmod +x /run.sh
# 设置开放端口
EXPOSE 22
# 设置自动开启命令
CMD ["/run.sh"]
[root@test-devops sshd_ubuntu]#
4.创建镜像 [root@test-devops sshd_ubuntu]# docker build -t sshd:dockerfile . Sending build context to Docker daemon 4.608 kB Sending build context to Docker daemon Step 0 : FROM ubuntu:14.04 —> 6d4946999d4f Step 1 : MAINTAINER from www.dockerpool.com by steven —> Running in e1b2a2e326a7 —> 818919de1a48 Removing intermediate container e1b2a2e326a7 Step 2 : RUN apt-get install -y openssh-server vim —> Running in 56f0e8510f4e Reading package lists… Building dependency tree… Reading state information… ……略…… —> Running in 819a996beecc —> d5d7ef949227 Removing intermediate container 819a996beecc Step 10 : CMD /run.sh —> Running in 4e3399154feb —> 053f79ebfb32 Removing intermediate container 4e3399154feb Successfully built 053f79ebfb32 [root@test-devops sshd_ubuntu]#
5.查看镜像
[root@test-devops sshd_ubuntu]# docker images
REPOSITORY TAG IMAGE ID CREATED VIRTUAL SIZE
sshd dockerfile 053f79ebfb32 15 minutes ago 261.4 MB
[root@test-devops sshd_ubuntu]#
6.测试镜像,运行容器
[root@test-devops sshd_ubuntu]# docker run -d -p 10122:22 sshd:dockerfile
91055c500eaa619e6758199c2e5cc3a55d881e30c20a66857e45f3f650456ebd
[root@test-devops sshd_ubuntu]# docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
91055c500eaa sshd:dockerfile "/run.sh" 4 seconds ago Up 3 seconds 0.0.0.0:10122->22/tcp fervent_kowalevski
[root@test-devops sshd_ubuntu]# netstat -tlnp
Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name
tcp 0 0 0.0.0.0:22 0.0.0.0:* LISTEN 924/sshd
tcp 0 0 121.41.118.184:4505 0.0.0.0:* LISTEN 1030/python2.6
tcp 0 0 121.41.118.184:4506 0.0.0.0:* LISTEN 1042/python2.6
tcp 0 0 0.0.0.0:10050 0.0.0.0:* LISTEN 17777/zabbix_agentd
tcp 0 0 0.0.0.0:10051 0.0.0.0:* LISTEN 20845/zabbix_server
tcp 0 0 127.0.0.1:9000 0.0.0.0:* LISTEN 20670/php-fpm
tcp 0 0 0.0.0.0:10122 0.0.0.0:*
[root@test-devops sshd_ubuntu]#
7.登陆
zhangkeyuan@opsnotes:~ » ssh -p 10122 root@121.41.118.184
Welcome to Ubuntu 14.04.2 LTS (GNU/Linux 2.6.32-504.12.2.el6.x86_64 x86_64)
* Documentation: https://help.ubuntu.com/
Last login: Thu Jul 2 08:23:44 2015 from 101.231.116.2
root@91055c500eaa:~#