构建业务镜像1
创建tomcat-app1和tomcat-app2两个目录,代表不同的两个基于tomcat的业务。
准备tomcat的配置文件
[root@ubuntu1804 ~]#mkdir -p /data/dockerfile/web/tomcat/tomcat-app{1,2}
[root@ubuntu1804 ~]#tree /data/dockerfile/web/tomcat/
/data/dockerfile/web/tomcat/
├── tomcat-app1
├── tomcat-app2
└── tomcat-base-8.5.50
├── apache-tomcat-8.5.50.tar.gz
├── build.sh
└── Dockerfile
3 directories, 3 files
#上传和修改server.xml
[root@ubuntu1804 ~]#cd /data/dockerfile/web/tomcat/tomcat-base-8.5.50
[root@ubuntu1804 tomcat-base-8.5.50]#tar xf apache-tomcat-8.5.50.tar.gz
[root@ubuntu1804 tomcat-base-8.5.50]#cp apache-tomcat-8.5.50/conf/server.xml /data/dockerfile/web/tomcat/tomcat-app1/
[root@ubuntu1804 tomcat-base-8.5.50]#cd /data/dockerfile/web/tomcat/tomcat-app1/
[root@ubuntu1804 tomcat-app1]#vim server.xml
<Host name="localhost" appBase="/data/tomcat/webapps"
unpackWARs="true" autoDeploy="true">
准备自定义页面
[root@ubuntu1804 tomcat-app1]#mkdir app
[root@ubuntu1804 tomcat-app1]#echo "Tomcat Page in app1" > app/index.jsp
[root@ubuntu1804 tomcat-app1]#tar zcf app.tar.gz app
准备容器启动执行脚本
[root@ubuntu1804 tomcat-app1]#vim run_tomcat.sh
[root@ubuntu1804 tomcat-app1]#cat run_tomcat.sh
#!/bin/bash
echo "nameserver 180.76.76.76" > /etc/resolv.conf
su - www -c "/apps/tomcat/bin/catalina.sh start"
su - www -c "tail -f /etc/hosts"
[root@ubuntu1804 tomcat-app1]#chmod a+x run_tomcat.sh
准备Dockerfile
[root@ubuntu1804 tomcat-app1]#vim Dockerfile
[root@ubuntu1804 tomcat-app1]#cat Dockerfile
#Tomcat Web Image
FROM tomcat-base:v8.5.50
LABEL maintainer="wangxiaochun <root@wangxiaochun.com>"
ADD server.xml /apps/tomcat/conf/server.xml
ADD run_tomcat.sh /apps/tomcat/bin/run_tomcat.sh
ADD app.tar.gz /data/tomcat/webapps/
RUN chown -R www.www /apps/ /data/tomcat/
EXPOSE 8080 8009
CMD ["/apps/tomcat/bin/run_tomcat.sh"]
执行构建脚本制作镜像
[root@ubuntu1804 tomcat-app1]#vim build.sh
[root@ubuntu1804 tomcat-app1]#cat build.sh
#!/bin/bash
docker build -t tomcat-web:app1 .
[root@ubuntu1804 tomcat-app1]#pwd
/data/dockerfile/web/tomcat/tomcat-app1
[root@ubuntu1804 tomcat-app1]#tree
.
├── app
│ └── index.jsp
├── app.tar.gz
├── build.sh
├── Dockerfile
├── run_tomcat.sh
└── server.xml
1 directory, 6 files
[root@ubuntu1804 tomcat-app1]#bash build.sh
[root@ubuntu1804 tomcat-app1]#docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
tomcat-web app1 3e9eacc5ef86 4 seconds ago 824MB
tomcat-base v8.5.50 8d5395cb72c4 35 minutes ago 824MB
centos7-jdk 8u212 e0fe770a7ccd 57 minutes ago 809MB
centos7-base v1 34ab3afcd3b3 2 hours ago 403MB
centos centos7.7.1908 08d05d1d5859 2 months ago 204MB
从镜像启动测试容器
[root@ubuntu1804 tomcat-app1]#docker run -d -p 8080:8080 tomcat-web:app1
82e6690e36c3a6faf2dae62bd706a89cbba490d567c841c37501f0fba670ea25
访问测试
[root@ubuntu1804 ~]#curl 127.0.0.1:8080/app/
Tomcat Page in app1
[root@ubuntu1804 ~]#docker exec -it 82e6690e36c3 bash
[root@82e6690e36c3 /]# ps aux
USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND
root 1 0.0 0.2 15136 2248 ? Ss 22:14 0:00 /bin/bash /apps/tomcat/bin/run_tomcat.sh
www 25 0.8 9.7 2241656 95924 ? Sl 22:14 0:04 /usr/local/jdk/bin/java -Djava.util.logging.config.file=/apps/tomcat
root 26 0.0 0.4 85428 4472 ? S 22:14 0:00 su - www -c tail -f /etc/hosts
www 27 0.0 0.0 4416 720 ? Ss 22:14 0:00 tail -f /etc/hosts
root 82 25.0 0.3 15800 3820 pts/0 Ss 22:22 0:00 bash
root 101 0.0 0.3 55196 3836 pts/0 R+ 22:22 0:00 ps aux
[root@82e6690e36c3 /]# vim /data/tomcat/webapps/app/index.jsp
[root@82e6690e36c3 /]# cat /data/tomcat/webapps/app/index.jsp
Tomcat Page in app1 v2
[root@82e6690e36c3 /]# /apps/tomcat/bin/catalina.sh stop
Using CATALINA_BASE: /apps/tomcat
Using CATALINA_HOME: /apps/tomcat
Using CATALINA_TMPDIR: /apps/tomcat/temp
Using JRE_HOME: /usr/local/jdk/jre
Using CLASSPATH: /apps/tomcat/bin/bootstrap.jar:/apps/tomcat/bin/tomcat-juli.jar
[root@82e6690e36c3 /]# /apps/tomcat/bin/catalina.sh start
Using CATALINA_BASE: /apps/tomcat
Using CATALINA_HOME: /apps/tomcat
Using CATALINA_TMPDIR: /apps/tomcat/temp
Using JRE_HOME: /usr/local/jdk/jre
Using CLASSPATH: /apps/tomcat/bin/bootstrap.jar:/apps/tomcat/bin/tomcat-juli.jar
Tomcat started.
[root@ubuntu1804 tomcat-app1]#curl 127.0.0.1:8080/app/
Tomcat Page in app1 v2
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