docker-compose部署nginx代理tomcat集群实现负载均衡与部署lnmp+discuz

nginx代理tomcat集群实现负载均衡

目录结构

[[e-mail] my-composetest]# tree
.
├── docker-compose.yml
├── etc
│   └── localtime						##时区文件
├── nginx
│   └── default.conf					##nginx配置文件
├── tomcat
│   ├── apache-tomcat-8.5.56.tar.gz		##tomca压缩包
│   ├── Dockerfile						##构建镜像文件
│   └── jdk-8u251-linux-x64.tar.gz		##jdk压缩包
└── webserver
    ├── tomcat1
    │   └── index.jsp					##网页文件
    └── tomcat2
        └── index.jsp					##网页文件

构建tomcat镜像

jdk下载网址：https://www.oracle.com/java/technologies/javase-jdk14-downloads.html
官方网址需要注册
tomcat下载地址（wget）：https://mirrors.aliyun.com/apache/tomcat/tomcat-8/v8.5.56/bin/apache-tomcat-8.5.56.tar.gz

cat tomcat/Dockerfile 

FROM centos7
ADD jdk-8u251-linux-x64.tar.gz /usr/local/			##复制并解压压缩包到容器
ENV JAVA_HOME /usr/local/jdk1.8.0_251/				##设置java环境变量
ADD apache-tomcat-8.5.56.tar.gz /usr/local/
EXPOSE 8080											##开放端口
ENTRYPOINT ["/usr/local/apache-tomcat-8.5.56/bin/catalina.sh","run"]
##前台运行tomcat脚本

nginx配置文件

cat nginx/default.conf

upstream webserver {
server tomcat1:8080;
server tomcat2:8080;
}
server {
    listen       80;
    server_name  localhost;

    #charset koi8-r;
    #access_log  /var/log/nginx/host.access.log  main;

    location / {
        proxy_pass http://webserver;
    }
}

时区文件

[[e-mail] my-composetest]# cp /usr/share/zoneinfo/Asia/Shanghai etc/localtime

网页文件

[[e-mail] my-composetest]# cat webserver/tomcat1/index.jsp 
<%
out.println("this is tomcat1");
%>

[[e-mail] my-composetest]# cat webserver/tomcat2/index.jsp 
<%
out.println("this is tomcat2");
%>

docker-compose.yml

version: "3"
services:
  nginx:
    image: nginx
    restart: always
    ports:
      - 80:80
    links:					##links方式连接tomcat
      - tomcat1:tomcat1
      - tomcat2:tomcat2
    volumes:
      - ./etc/localtime:/etc/localtime		##挂载时区文件
      - ./nginx/default.conf:/etc/nginx/conf.d/default.conf		##挂载nginx配置文件
    depends_on:				##设置依赖，启动顺序
      - tomcat1
      - tomcat2
  tomcat1:
    hostname: tomcat1
    build: ./tomcat				##Dockerfile路径
    volumes:					##挂载时区跟网页路径
      - ./webserver/tomcat1:/usr/local/apache-tomcat-8.5.56/webapps/ROOT
      - ./etc/localtime:/etc/localtime
  tomcat2:
    hostname: tomcat2
    build: ./tomcat
    volumes:
      - ./webserver/tomcat2:/usr/local/apache-tomcat-8.5.56/webapps/ROOT
      - ./etc/localtime:/etc/localtime

启动并访问验证

docker-compose up -d
Building tomcat1
Step 1/6 : FROM centos7
 ---> f9c9fbed3702
Step 2/6 : ADD jdk-8u251-linux-x64.tar.gz /usr/local/
 ---> 591d5b98b6ed
Step 3/6 : ENV JAVA_HOME /usr/local/jdk1.8.0_251/
 ---> Running in 2cac20cececf
Removing intermediate container 2cac20cececf
 ---> de15c462828d
Step 4/6 : ADD apache-tomcat-8.5.56.tar.gz /usr/local/
 ---> 2c8e1de42336
Step 5/6 : EXPOSE 8080
 ---> Running in 54bc2ad953af
Removing intermediate container 54bc2ad953af
 ---> d4c2974a3704
Step 6/6 : ENTRYPOINT ["/usr/local/apache-tomcat-8.5.56/bin/catalina.sh","run"]
 ---> Running in 01bf136b66f5
Removing intermediate container 01bf136b66f5
 ---> 73373fdb1edb
Successfully built 73373fdb1edb
Successfully tagged my-composetest_tomcat1:latest
................

Creating my-composetest_tomcat1_1 ... done
Creating my-composetest_tomcat2_1 ... done
Creating my-composetest_nginx_1   ... done


curl 192.168.1.10
this is tomcat1

curl 192.168.1.10
this is tomcat2

lnmp+Discuz

准备工作

创建文件夹

mkdir lnmp-compose
mkdir lnmp-compose/webserver
mkdir lnmp-compose/nginx
mkdir -p lnmp-compose/mysql/data
cd lnmp-compose

nginx配置文件

vim nginx/default.conf


server {
listen       80;
server_name  localhost;

#charset koi8-r;
#access_log  /var/log/nginx/host.access.log  main;

location / {
    root   /webserver;						##网页目录 等下安装discuz时创建
    index  index.php index.html index.htm;
}

#error_page  404              /404.html;

# redirect server error pages to the static page /50x.html
#
error_page   500 502 503 504  /50x.html;
location = /50x.html {
    root   /usr/share/nginx/html;
}

# proxy the PHP scripts to Apache listening on 127.0.0.1:80
#
#location ~ \.php$ {
#    proxy_pass   http://127.0.0.1;
#}

# pass the PHP scripts to FastCGI server listening on 127.0.0.1:9000
#
location ~ \.php$ {									##开启php
    fastcgi_pass   php:9000;						##指定主机名和端口
    fastcgi_index  index.php;
    fastcgi_param  SCRIPT_FILENAME  /webserver$fastcgi_script_name;		##此处改成网页目录
    include        fastcgi_params;
}

# deny access to .htaccess files, if Apache's document root
# concurs with nginx's one
#
#location ~ /\.ht {
#    deny  all;
#}
}

php镜像

由于php官方镜像编译的问题，导致php不支持以mysqli的方式与mysql的连接，需要对镜像进行扩展

 FROM  php:5.6-fpm
 RUN apt-get update && apt-get install -y \
 libfreetype6-dev \
 libjpeg62-turbo-dev \
 libpng12*-dev \
 vim \
 && docker-php-ext-install pdo_mysql mysqli \
 && docker-php-ext-configure gd --with-freetype-dir=/usr/include/ --with-jpeg-dir=/usr/include/ \
 && docker-php-ext-install gd

docker build -t="php-fpm5.6/v2" ./    ##构建新的镜像

discuz

##下载
wget http://download.comsenz.com/DiscuzX/3.3/Discuz_X3.3_SC_GBK.zip

##解压
unzip Discuz_X3.3_SC_GBK.zip

##复制upload到webserver
cp -rf /root/upload/* webserver/

##权限
chmod 777 -R webserver

docker-compose.yml

cat docker-compose.yml

version: "3"
services:
  nginx:
    image: nginx
    ports:
      - 80:80
    volumes:
      - ./webserver:/webserver				##挂载网页目录
      - ./nginx/default.conf:/etc/nginx/conf.d/default.conf 		##挂载配置文件
    depends_on:
      - php
    links:				##连接容器
      - php
    environment:		##时区
      - TZ=Asia/Shanghai
  php:
    image: php-fpm5.6/v2
    ports:
      - 9000:9000
    volumes:
      - ./webserver:/webserver		##挂载网页目录
    links:							##链接容器
      - mysql
    depends_on:
      - mysql
    environment:
      - TZ=Asia/Shanghai
  mysql:
    image: mysql:5.7
    ports:
      - 3306:3306
    environment:
      - TZ=Asia/Shanghai
    volumes:						##此处挂载会自动把容器内的文件复制出来
      - ./mysql/data:/var/lib/mysql
    environment:					##传入mysql登录密码
      - MYSQL_ROOT_PASSWORD=123456

启动并验证

docker-compose up -d
docker-compose up -d
Creating lnmp-compose_mysql_1 ... done
Creating lnmp-compose_php_1   ... done
Creating lnmp-compose_nginx_1 ... done

docker-compose ps
    Name                      Command              State                 Ports              
------------------------------------------------------------------------------------------------
lnmp-compose_mysql_1   docker-entrypoint.sh mysqld     Up      0.0.0.0:3306->3306/tcp, 33060/tcp
lnmp-compose_nginx_1   nginx -g daemon off;            Up      0.0.0.0:80->80/tcp               
lnmp-compose_php_1     docker-php-entrypoint php-fpm   Up      0.0.0.0:9000->9000/tcp           


##访问ip/install 一直下一步到第三步

输入数据库密码 设置管理员密码

安装成功