利用Dockerfile制作java运行环境的镜像
#安装docker #卸载旧版本 yum remove docker \ docker-client \ docker-client-latest \ docker-common \ docker-latest \ docker-latest-logrotate \ docker-logrotate \ docker-selinux \ docker-engine-selinux \ docker-engine #安装所需的包 yum install -y yum-utils \ device-mapper-persistent-data \ lvm2 #使用以下命令设置稳定存储库 yum-config-manager \ --add-repo \ https://download.docker.com/linux/centos/docker-ce.repo #安装最新版本的Docker CE yum install docker-ce -y [root@i-8ew12yu3 jenkins]# docker version Client: Version: 18.06.1-ce API version: 1.38 Go version: go1.10.3 Git commit: e68fc7a Built: Tue Aug 21 17:23:03 2018 OS/Arch: linux/amd64 Experimental: false Server: Engine: Version: 18.06.1-ce API version: 1.38 (minimum version 1.12) Go version: go1.10.3 Git commit: e68fc7a Built: Tue Aug 21 17:25:29 2018 OS/Arch: linux/amd64 Experimental: false [root@tokyo-*** tomcat-base]# systemctl enable docker.service [root@tokyo-*** tomcat-base]# systemctl start docker
当前用到的环境是：
Centos 7.5Docker version 18.06.1-ce, build e68fc7a
1、先用操作系统的基础镜像把一些运行需要的环境装好
在/app目录下创建相对应的文件目录
[root@xxx /app/]# mkdir dockerfile/{web/{nginx,tomcat,jdk,apache},system/{centos,ubuntu,redhat}} -pv
[root@xxx /app]# cd dockerfile/system/centos/
[root@xxx /app/dockerfile/system/centos]# mkdir centos-7.5-base
[root@xxx /app/dockerfile/system/centos]# cd centos-7.5-base
创建一个Dockerfile文件
[root@tokyo-*** centos-7.5-base]# cat Dockerfile #Nginx Base Image FROM centos:7.5.1804 LABEL maintaier "jiangwenhui <[email protected]>" RUN yum install -y vim wget pcre pcre-devel zlib zlib-devel openssl openssl-devel iproute net-tools iotop
创建一个用于直接docker build脚本后续直接执行脚本即可
[root@tokyo-*** centos-7.5-base]# cat build-command.sh #!/bin/bash docker build -t 172.20.7.50/baseimages/centos-base:7.5.1804 . [root@tokyo-*** centos-7.5-base]#
执行脚本创建新镜像
[root@node2 /app/dockerfile/system/centos/centos-7.5-base]#bash build-command.sh Sending build context to Docker daemon 3.072kB Step 1/3 : FROM centos:7.5.1804 ---> 76d6bc25b8a5 Step 2/3 : LABEL maintaier '[email protected]' ---> Using cache ---> 05ccd970d71d Step 3/3 : RUN yum install -y vim wget pcre pcre-devel zlib zlib-devel openssl openssl-devel iproute net-tools iotop ---> Using cache ---> 73d683a54877 Successfully built 73d683a54877 Successfully tagged 172.20.7.50/baseimages/centos-base:7.5.1804
2、利用制作好的基础环境镜像制作jdk的镜像
从centos-7.5-base退出来在当前目录创建一个jdk1.8的目录.
[root@node2 /app/dockerfile/system/centos/centos-7.5-base]# cd .. [root@node2 /app/dockerfile/system/centos]# mkdir jdk1.8 [root@node2 /app/dockerfile/system/centos]# cd jdk1.8/
创建Dockerfile
[root@tokyo-*** jdk1.8]# cat Dockerfile FROM 172.20.7.50/baseimages/centos-base:7.5.1804 LABEL maintainer "jiangwenhui <[email protected]>" ADD jdk-8u191-linux-x64.tar.gz /usr/local/src/ RUN ln -s /usr/local/src/jdk1.8.0_191/ /usr/local/jdk ADD profile /etc/profile ENV JAVA_HOME /usr/local/jdk ENV JRE_HOME $JAVA_HOME/jre ENV CLASSPATH $JAVA_HOME/lib/:$JRE_HOME/lib/ ENV PATH $PATH:$JAVA_HOME/bin RUN rm -rf /etc/localtime && ln -snf /usr/share/zoneinfo/Asia/Shanghai /etc/localtime && echo "Asia/Shanghai" > /etc/timezone
上传jdk包到当前目录下：
复制/etc/profile文件到当前目录
[root@tokyo-*** jdk1.8]# cp /etc/profile .
在profile最后添加jdk的环境变量
[root@tokyo-*** jdk1.8]# tail -10 profile TZ='Asia/Shanghai' export TZ #java export JAVA_HOME=/usr/local/jdk export TOMCAT_HOME=/apps/tomcat export PATH=$JAVA_HOME/bin:$JAVA_HOME/jre/bin:$TOMCAT_HOME/bin:$PATH export CLASSPATH=.$CLASSPATH:$JAVA_HOME/lib:$JAVA_HOME/jre/lib:$JAVA_HOME/lib/tools.jar
创建docker build的shell脚本
[root@tokyo-*** jdk1.8]# cat build-command.sh #!/bin/bash # docker build -t 172.20.7.50/baseimages/centos7.5-jdk:8.162 .
开始制作镜像
[root@node2 /app/dockerfile/system/centos/jdk1.8]#bash build-command.sh Sending build context to Docker daemon 189.8MB Step 1/10 : FROM 172.20.7.50/baseimages/centos-base:7.5.1804 ---> 73d683a54877 Step 2/10 : LABEL maintainer "mr.luo <[email protected]>" ---> Running in 65604dd1f392 Removing intermediate container 65604dd1f392 ---> c4720603ce38 Step 3/10 : ADD jdk-8u162-linux-x64.tar.gz /usr/local/src/ ---> bc98adffe1b4 Step 4/10 : RUN ln -s /usr/local/src/jdk1.8.0_162/ /usr/local/jdk ---> Running in df5a6f67f9fd Removing intermediate container df5a6f67f9fd ---> 0ae1af0416c6 Step 5/10 : ADD profile /etc/profile ---> eee23a69c0c8 Step 6/10 : ENV JAVA_HOME /usr/local/jdk ---> Running in edbef8563e83 Removing intermediate container edbef8563e83 ---> 5f783f642054 Step 7/10 : ENV JRE_HOME $JAVA_HOME/jre ---> Running in fa0e5f08e732 Removing intermediate container fa0e5f08e732 ---> 28a4d31463d4 Step 8/10 : ENV CLASSPATH $JAVA_HOME/lib/:$JRE_HOME/lib/ ---> Running in 3c4ebb04ac62 Removing intermediate container 3c4ebb04ac62 ---> 245f2dd82d52 Step 9/10 : ENV PATH $PATH:$JAVA_HOME/bin ---> Running in 4f5e6093f0a9 Removing intermediate container 4f5e6093f0a9 ---> 5be0e6261eea Step 10/10 : RUN rm -rf /etc/localtime && ln -snf /usr/share/zoneinfo/Asia/Shanghai /etc/localtime && echo "Asia/Shanghai" > /etc/timezone ---> Running in 52d8cb8463a8 Removing intermediate container 52d8cb8463a8 ---> 9fb867ae8c39 Successfully built 9fb867ae8c39 Successfully tagged 172.20.7.50/baseimages/centos7.5-jdk:8.162
查看当前目录下的文件
[root@tokyo-*** jdk1.8]# ls build-command.sh Dockerfile jdk-8u191-linux-x64.tar.gz profile
检查制作好的镜像是否能正常使用
[root@tokyo-*** jdk1.8]# docker run -it --rm 172.20.7.50/baseimages/centos7.5-jdk:8.162 bash [root@efaa94bf800c /]# java -version java version "1.8.0_191" Java(TM) SE Runtime Environment (build 1.8.0_191-b12) Java HotSpot(TM) 64-Bit Server VM (build 25.191-b12, mixed mode) [root@efaa94bf800c /]# date +'%F %T' 2018-11-29 10:42:57 [root@efaa94bf800c /]# exit exit [root@tokyo-*** jdk1.8]#
3、做Tomcat的镜像
进入之前建好的/app/dockerfile/web/tomcat下,创建一个tomcat-base目录
[root@node2 ~]# cd /app/dockerfile/web/tomcat [root@node2 /app/dockerfile/web/tomcat]#mkdir tomcat-base [root@tokyo-*** tomcat]# cd tomcat-base/
创建Dockerfile
[root@tokyo-*** tomcat-base]# cat Dockerfile FROM 172.20.7.50/baseimages/centos7.5-jdk:8.162 LABEL maintainer "jiangwenhui <[email protected]>" RUN mkdir /apps ADD apache-tomcat-8.5.35.tar.gz /apps RUN ln -s /apps/apache-tomcat-8.5.35 /apps/tomcat
创建docker build脚本
[root@tokyo-*** tomcat-base]# cat build-command.sh #!/bin/bash docker build -t 172.20.7.50/baseimages/centos-tomcat:8.5.35 .
执行创建镜像文件：
[root@node2 /app/dockerfile/web/tomcat/tomcat-base]#bash build-command.sh Sending build context to Docker daemon 9.625MB Step 1/5 : FROM 172.20.7.50/baseimages/centos7.5-jdk:8.162 ---> 9fb867ae8c39 Step 2/5 : LABEL maintainer "jiangwenhui <[email protected]>" ---> Running in 9ce6fc4d2850 Removing intermediate container 9ce6fc4d2850 ---> b68755061b28 Step 3/5 : RUN mkdir /apps ---> Running in b483c6b127f2 Removing intermediate container b483c6b127f2 ---> 605c1a048a5f Step 4/5 : ADD apache-tomcat-8.5.35.tar.gz /apps ---> 3c44f96ed41c Step 5/5 : RUN ln -s /apps/apache-tomcat-8.5.35 /apps/tomcat ---> Running in 4c1aa39a6c92 Removing intermediate container 4c1aa39a6c92 ---> 9b3bc4f58cc9 Successfully built 9b3bc4f58cc9 Successfully tagged 172.20.7.50/baseimages/centos-tomcat:8.5.35
利用创建好的镜像起一个容器检查下是否成功制作好，启动时加上-p暴露端口，在物理机上测试下
[root@node2 /app/dockerfile/web/tomcat/tomcat-base]#docker run -it -p 8802:8080 172.20.7.50/baseimages/centos-tomcat:8.5.35 bash [root@917b2c2262a3 /]# cd /apps/ [root@917b2c2262a3 apps]# ll total 0 drwxr-xr-x 9 root root 220 Nov 22 22:08 apache-tomcat-8.5.35 lrwxrwxrwx 1 root root 26 Nov 22 22:08 tomcat -> /apps/apache-tomcat-8.5.35 [root@917b2c2262a3 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.
在客户端用浏览器测试
