Docker In Action<二> 制作可以SSH登录的web容器服务指北

Apache Tomcat

本篇基于前面文章Docker In Action<一> 制作可以SSH登录的docker容器服务指北生成的centos65-ssh开始制作web服务器，使用httpd或者Tomcat来提供web服务（使用supervisor和volumn 方式来制作服务)。

构建httpd web服务器

一、构建http web服务容器

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mkdir -p ~/docker/webserver
cd ~/docker/webserver

Dockerfile

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cat >> ~/docker/webserver/Dockerfile << EOF
FROM centos65-ssh
MAINTAINER hzchenkj
RUN yum install -y httpd
RUN yum clean all
RUN echo "A simple Docker webserver" > /var/www/html/index.html
ADD supervisord.conf /etc/supervisord.conf
EXPOSE 80
EOF

supervisord.conf 使用supervisord服务

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cat >> ~/docker/webserver/supervisord.conf << EOF
[supervisord]
nodaemon=true
[program:sshd]
command=/usr/sbin/sshd -D
[program:httpd]
command=/usr/sbin/httpd -D FOREGROUND
EOF

构建容器

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[root@master webserver]# docker build -t centos65-webserver ~/docker/webserver/
Sending build context to Docker daemon 3.584 kB
Sending build context to Docker daemon 
Step 0 : FROM centos65-ssh
 ---> 394fac76f4b2
Step 1 : MAINTAINER hzchenkj
 ---> Running in 1ccb987bae63
 ---> ec16a945cba3
Removing intermediate container 1ccb987bae63
Step 2 : RUN yum install -y httpd
 ---> Running in ee586632d936
Loaded plugins: fastestmirror

查看镜像

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[root@master webserver]# docker  images
REPOSITORY           TAG                 IMAGE ID            CREATED              VIRTUAL SIZE
centos65-webserver   latest              66b7f5ed174f        About a minute ago   449.1 MB
centos65-ssh         latest              394fac76f4b2        3 hours ago          366.4 MB
centos65-base        latest              0b1acae7bfea        11 hours ago         292.3 MB

启动webserver容器，端口80映射到本机5001端口：

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[root@master webserver]# docker run -d -p 5001:80 centos65-webserver
0636d5bf9e9b85ffc804012a2d6bd7af78080e85e674bd5975d64a1f126376ac

查看启动的webserver容器

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[root@master webserver]# docker  ps 
CONTAINER ID        IMAGE                       COMMAND                CREATED              STATUS              PORTS                                    NAMES
0636d5bf9e9b        centos65-webserver:latest   /bin/sh -c 'supervis   About a minute ago   Up About a minute   22/tcp, 8080/tcp, 0.0.0.0:5001->80/tcp   berserk_kirch  
[root@master webserver]# docker logs 0636d5bf9e9b
2014-10-29 00:08:10,977 CRIT Supervisor running as root (no user in config file)
2014-10-29 00:08:10,986 INFO supervisord started with pid 1
2014-10-29 00:08:10,988 INFO spawned: 'httpd' with pid 8
2014-10-29 00:08:10,989 INFO spawned: 'sshd' with pid 9
2014-10-29 00:08:11,987 INFO success: httpd entered RUNNING state, process has stayed up for > than 1 seconds (startsecs)
2014-10-29 00:08:11,988 INFO success: sshd entered RUNNING state, process has stayed up for > than 1 seconds (startsecs)
[root@master webserver]#

访问wenb服务

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[root@master webserver]# curl localhost:5001
A simple Docker webserver
[root@master webserver]#

构建Tomcat web服务器

可以用yum来安装Tomcat服务也可以自己从Tomcat官方网站下载tomcat包和jdk文件进行发布。
本处使用存手工方式来安装JDK，设置环境变量并安装tomcat服务。
使用volumn方式来发布web服务

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mkdir -p ~/docker/tomcat
cd ~/docker/tomcat
touch ~/docker/tomcat/Dockerfile
cd /usr/local/src
wget http://**/jdk1.6.0_38.tar.gz
wget http://mirrors.cnnic.cn/apache/tomcat/tomcat-6/v6.0.41/bin/apache-tomcat-6.0.41.tar.gz
mkdir -p /Docker_Volume/webapps

Dockerfile

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FROM centos65-ssh
MAINTAINER chenkj <hzchenkj@163.com>
#RUN yum -y install tomcat6
#RUN yum -y install tomcat6-webapps
#安装jdk
ADD /usr/local/src/jdk1.6.0_38.tar.gz /tmp/jdk1.6.0_38.tar.gz
RUN mv /tmp/jdk1.6.0_38.tar.gz/jdk1.6.0_38 /opt
RUN rm -rf /tmp/jdk1.6.0_38.tar.gz
#安装tomcat
ADD /usr/local/src/apache-tomcat-6.0.41.tar.gz /tmp/apache-tomcat-6.0.41.tar.gz
RUN mv /tmp/apache-tomcat-6.0.41.tar.gz/apache-tomcat-6.0.41 /opt
RUN rm -rf /tmp/apache-tomcat-6.0.41.tar.gz
#设置环境变量
ENV JAVA_HOME /opt/jdk1.6.0_38
ENV PATH $JAVA_HOME/bin:$PATH
#增加volume 目录
VOLUME ["/Docker_Volume"]
#增加supervisor服务
ADD supervisord.conf /etc/supervisord.conf
EXPOSE 8080
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#RUN sed -i 's/appBase="webapps"/appBase="/Docker_Volume/webapps"/g' /opt/apache-tomcat-6.0.41/conf/server.xml
#ENTRYPOINT /opt/apache-tomcat-6.0.41/bin/startup.sh && tail -f /opt/apache-tomcat-6.0.41/logs/catalina.out

supervisord.conf

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[supervisord]
nodaemon=true
#sshd 服务
[program:sshd]
command=/usr/sbin/sshd -D
#tomcat服务
[program:tomcat]
command= /opt/apache-tomcat-6.0.41/bin/startup.sh && tail -f /opt/apache-tomcat-6.0.41/logs/catalina.out

构建tomcat服务容器

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#docker build -t centos65-tomcat .

运行tomcat容器

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#docker run -d  -P centos65-tomcat

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