针对打印服务CUPS的容器化学习实践。

• 需要创建一个目录
• 在目录内建立一个文件名为Dockerfile的文件和文件名为cupsd.conf的配置文件

Dockerfile

#使用原始镜像
FROM centos:6
#作者
MAINTAINER TBS
#使用阿里云yum源
RUN curl -o /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-6.repo && yum makecache
#安装cups及组件
RUN yum -y install cups cups-libs
#备份原始配置文件
RUN mv /etc/cups/cupsd.conf /etc/cups/cupsd.conf.bak
#将cupsd.conf文件复制到配置目录
COPY cupsd.conf /etc/cups/
#开放631端口
EXPOSE 631
#运行cups服务
CMD ["cupsd"]

配置文件cupsd.conf的修改

• 其中修改了"Listen *:631",允许任何地址访问
• 如下增加"Allow all"配置

# Restrict access to the server...
<Location />Order allow,denyAllow all
</Location># Restrict access to the admin pages...
<Location /admin>Order allow,denyAllow all
</Location># Restrict access to configuration files...
<Location /admin/conf>AuthType DefaultRequire user @SYSTEMOrder allow,denyAllow all
</Location>

构建镜像

docker build -t office-cups-centos6 .

构建过程

Sending build context to Docker daemon  6.656kB
Step 1/8 : FROM centos:6---> d0957ffdf8a2
Step 2/8 : MAINTAINER shark1985---> Using cache---> 27ecd3caf516
Step 3/8 : RUN curl -o /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-6.repo && yum makecache---> Using cache---> b1c6f3ba74d5
Step 4/8 : RUN yum -y install cups cups-libs---> Using cache---> 48e62c3cb9c7
Step 5/8 : RUN mv /etc/cups/cupsd.conf /etc/cups/cupsd.conf.bak---> Running in b916430865f1
Removing intermediate container b916430865f1---> 0bec467158d6
Step 6/8 : COPY cupsd.conf /etc/cups/---> 16187084007f
Step 7/8 : EXPOSE 631---> Running in e9644f736601
Removing intermediate container e9644f736601---> 3322999c070b
Step 8/8 : CMD ["cupsd"]---> Running in 9eec5c9fc7dd
Removing intermediate container 9eec5c9fc7dd---> 354c91defd47
Successfully built 354c91defd47
Successfully tagged office-cups-centos6:latest

查看镜像

docker images
REPOSITORY                   TAG                 IMAGE ID            CREATED             SIZE
office-cups-centos6          latest              354c91defd47        About an hour ago   487MB

使用镜像运行容器

docker run -d -p 631:631 office-cups-centos6:latest

查看容器

docker ps -a |grep office-cups-centos6:lateste63fc4ae54cc        office-cups-centos6:latest   "cupsd"                  2 weeks ago         Up 2 weeks                     0.0.0.0:631->631/tcpstoic_tesla

进入容器为root添加密码，才能管理CUPS

docker exec -it e63fc4ae54cc /bin/bash
[root@e63fc4ae54cc /]# passwd

通过https访问CUPS管理页面
https://ip:631/admin
使用前面的root账号和密码登录