配置docker centos tomcat

環境

主機環境 MBP macos
虛擬機主機環境 centos7 （virtualbox中的一個vm）
centos7中安裝docker（基於centos:centos6 image）
注：之前在Ubuntu（12.04，14.0x）上試着配置過tomcat，遇到了dialog，jdk安裝問題。

安裝配置

pull centos image

[root@lydcentos7 centos6]# docker pull centos:centos6

download jdk and tomcat

[root@lydcentos7 centos6]# wget --no-cookies --no-check-certificate --header "Cookie: gpw_e24=http%3A%2F%2Fwww.oracle.com%2F; oraclelicense
=accept-securebackup-cookie" "http://download.oracle.com/otn-pub/java/jdk/7u79-b15/jdk-7u79-linux-x64.tar.gz"
[root@lydcentos7 centos6]# wget http://mirrors.noc.im/apache/tomcat/tomcat-7/v7.0.68/bin/apache-tomcat-7.0.68.tar.gz

注意wget jdk時，要加wget的一些參數才能正常下載jdk包。

edit Dockerfile

FROM centos:centos6
MAINTAINER lreeder

£Helpful utils, but only sudo is required
£RUN yum -y install tar
£RUN yum -y install vim
£RUN yum -y install nc
RUN yum -y install sudo

££££££££ JDK7

£Note that ADD uncompresses this tarball automatically
ADD jdk-7u79-linux-x64.tar.gz /opt
WORKDIR /opt/jdk1.7.0_79
RUN alternatives --install /usr/bin/java java /opt/jdk1.7.0_79/bin/java 1
RUN alternatives --install /usr/bin/jar jar /opt/jdk1.7.0_79/bin/jar 1
RUN alternatives --install /usr/bin/javac javac /opt/jdk1.7.0_79/bin/javac 1
RUN echo "JAVA_HOME=/opt/jdk1.7.0_79" >> /etc/environment

££££££££ TOMCAT

£Note that ADD uncompresses this tarball automatically
ADD apache-tomcat-7.0.68.tar.gz /usr/share
WORKDIR /usr/share/
RUN mv  apache-tomcat-7.0.68 tomcat7
RUN echo "JAVA_HOME=/opt/jdk1.7.0_79/" >> /etc/default/tomcat7
RUN groupadd tomcat
RUN useradd -s /bin/bash -g tomcat tomcat
RUN chown -Rf tomcat.tomcat /usr/share/tomcat7
EXPOSE 8080

注：£ == #
install 命令一定加上 -y

目錄結構

[root@lydcentos7 centos6]£ ll
total 155M
drwxr-xr-x  2 root root   89 Apr  9 15:14 .
-rw-r--r--  1 root root  950 Apr  9 14:47 Dockerfile
drwxr-xr-x. 6 root root   60 Apr  9 14:10 ..
-rw-r--r--  1 root root 8.5M Feb  9 05:26 apache-tomcat-7.0.68.tar.gz
-rw-r--r--  1 root root 147M Apr 14  2015 jdk-7u79-linux-x64.tar.gz

build image

[root@lydcentos7 centos6]# docker build --rm=true -t centos6/tomcat7 .

...
Successfully built bc8fc2797f40

build image 成功之後會返回一個image Id，使用該imageId 或者 image Name就可以啓動tomcat了。

start tomcat

不設置端口映射啓動

#--name tomcat7 爲image name
[root@lydcentos7 centos6]# docker run  --rm=true -t -i --name tomcat7 centos6/tomcat7  /usr/bin/sudo -u tomcat /usr/share/tomcat7/bin/catalina.sh run

...
INFO: Server startup in 42027 ms

設置端口映射啓動

添加參數 -p 80:8080

[root@lydcentos7 centos6]# docker run -p 80:8080 --rm=true -t -i --name tomcat7 centos6/tomcat7 /usr/bin/sudo -u tomcat /usr/share/tomcat7/bin/catalina.sh run

...
INFO: Server startup in 42027 ms

查看image container ip

[root@lydcentos7 centos6]£ docker inspect --format '{{ .NetworkSettings.IPAddress }}' tomcat7
172.17.0.2

test tomcat

[root@lydcentos7 centos6]£ curl 172.17.0.2:8080

如果設置了端口映射，還可以在mac中訪問vm ip:port 來驗證tomcat啓動情況。如本例中在mac中使用瀏覽器訪問http://192.168.56.101:80。（192.168.56.101爲vm lydcentos7的ip）