案例一 整套项目打包部署

Docker Compose

1、介绍

Compose是一个定义和管理多容器的工具，使用Python语言编写。使用Compose配置文件描述多个容器应用的架构，比如使用什么镜像、数据卷、网络、映射端口等；然后一条命令管理所有服务，比如启动、停止、重启等。

 

2、安装

curl -L https://github.com/docker/compose/releases/download/1.15.0/docker-compose-`uname -s`-`uname -m` -o /usr/local/bin/docker-compose

chmod +x /usr/local/bin/docker-compose

或者

pip install docker-compose

 

3、YAML文件格式及编写注意事项

YAML是一种标记语言很直观的数据序列格式，可读性高。类似于XML数据描述语言，语法比XML简单的很多。

YAML数据结构通过缩进来表示，连续的项目通过减号来表示，健值对用冒号分隔，数据用中括号括起来，hash用花括号括起来。

 

YAML文件格式注意事项

1.不支持制表符tab键缩进，需要使用空格缩进

2.通常开头缩进2个空格

3.字符后缩进1个空格，如冒号、逗号、横杆

4.用井号注释

5.如果包含特殊字符用单引号引起来

6.布尔值(true、false、yes、no、on、off)必须用括号括起来，这样分析器会将他们解释为字符串。

 

docker-compose搭建lnmp

先把老师的Compose.zip包下载到机器上，然后解压

root@wxxdc-app:~# cat /data/compose_lnmp/docker-compose.yml
version: '3'
services:
nginx:
hostname: nginx
build:
context: ./nginx
dockerfile: Dockerfile
ports:
- 81:80
networks:
- lnmp
volumes:
- ./wwwroot:/usr/local/nginx/html
 
php:
hostname: php
build:
context: ./php
dockerfile: Dockerfile
networks:
- lnmp
volumes:
- ./wwwroot:/usr/local/nginx/html
 
mysql:
hostname: mysql
image: mysql:5.6
ports:
- 3306:3306
networks:
- lnmp
volumes:
- ./mysql/conf:/etc/mysql/conf.d
- ./mysql/data:/var/lib/mysql
command: --character-set-server=utf8
environment:
MYSQL_ROOT_PASSWORD: 123456
MYSQL_DATABASE: wordpress
MYSQL_USER: user
MYSQL_PASSWORD: user123
 
networks:
lnmp:

 

配置文件常用字段：

常用命令:

 

docker-compose搭建java环境网站,nginx+tomcat+mysql

cat docker-compose.yml
version: '3'
services:
nginx:
hostname: nginx
build:
context: ./nginx
dockerfile: Dockerfile
ports:
- 82:80
networks:
- lnmt
volumes:
- ./webapps:/opt/webapps
 
tomcat01:
hostname: tomcat01
build: ./tomcat
networks:
- lnmt
volumes:
- /usr/local/jdk1.8.0_45:/usr/local/jdk1.8.0_45
- ./webapps:/usr/local/apache-tomcat-8.0.46/webapps
 
tomcat02:
hostname: tomcat02
build: ./tomcat
networks:
- lnmt
volumes:
- /usr/local/jdk1.8.0_45:/usr/local/jdk1.8.0_45
- ./webapps:/usr/local/apache-tomcat-8.0.46/webapps
 
mysql:
hostname: mysql
image: mysql:5.6
ports:
- 3307:3306
networks:
- lnmt
volumes:
- ./mysql/conf:/etc/mysql/conf.d
- ./mysql/data:/var/lib/mysql
environment:
MYSQL_ROOT_PASSWORD: 123456
MYSQL_DATABASE: db
MYSQL_USER: user
MYSQL_PASSWORD: user123
 
networks:
lnmt:

 

nginx的Dockerfile

FROM centos:7
MAINTAINER www.aliangedu.com
RUN yum install -y gcc gcc-c++ make openssl-devel pcre-devel
ADD nginx-1.12.1.tar.gz /tmp
 
RUN cd /tmp/nginx-1.12.1 && 
./configure --prefix=/usr/local/nginx && 
make -j 2 && 
make install
 
RUN rm -rf /tmp/nginx-1.12.1* && yum clean all
 
COPY nginx.conf /usr/local/nginx/conf
 
WORKDIR /usr/local/nginx
EXPOSE 80
CMD ["./sbin/nginx", "-g", "daemon off;"]

 

 

nginx的配置文件

user root;
worker_processes auto;
 
error_log logs/error.log info;
 
pid logs/nginx.pid;
 
 
events {
use epoll;
}
 
http {
 
include mime.types;
default_type application/octet-stream;
 
log_format main '$remote_addr - $remote_user [$time_local] "$request" '
'$status $body_bytes_sent "$http_referer" '
'"$http_user_agent" "$http_x_forwarded_for"';
 
access_log logs/access.log main;
sendfile on;
keepalive_timeout 65;
 
upstream www.example.com {
#ip_hash;
server tomcat01:8080; #可以解析容器名
server tomcat02:8080;
}
 
server {
listen 80;
server_name localhost;
 
location / {
proxy_pass http://www.example.com;
}
 
location ~ .(html|css|js|jpg|png|gif)$ {
root /opt/webapps/ROOT; #将静态的东西用nginx来处理
}
}
}

 

tomcat的server.xml就用默认的

tomcat的Dockerfile

FROM centos:7
MAINTAINER www.aliangedu.com
 
ENV JAVA_HOME /usr/local/jdk1.8.0_45
 
ADD apache-tomcat-8.0.46.tar.gz /usr/local
COPY server.xml /usr/local/apache-tomcat-8.0.46/conf
RUN sed -i '1a JAVA_OPTS="-Djava.security.egd=file:/dev/./urandom"' /usr/local/apache-tomcat-8.0.46/bin/catalina.sh
 
WORKDIR /usr/local/apache-tomcat-8.0.46
EXPOSE 8080
ENTRYPOINT ["./bin/catalina.sh", "run"]

 

上面的sed操作为了解决容器启动tomcat慢的方法，具体的话去百度。