发表更新nginx

nginx负载均衡的简单使用

启动两个Tomcat

1,编写docker-compose.yml

version: '3'
services:
  tomcat1:
    image: tomcat
    container_name: tomcat1
    ports:
     - 9090:8080

  tomcat2:
    image: tomcat
    container_name: tomcat2
    ports:
      - 9091:8080

2,docker-compose up -d 启动tomcat

root@ddmcc:/usr/local/docker/tomcat# docker-compose up -d
Creating network "tomcat_default" with the default driver
Creating tomcat1 ... 
Creating tomcat2 ... 
Creating tomcat1
Creating tomcat1 ... done

3,输入docker ps查看,tomcat已正常启动

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4,在两个tomcat的index页面追加文字以便待会区分。
输入docker exec -it tomcat1 /bin/bash已交互的方式进入容器

进入webapps/ROOT目录在追加端口到末尾

root@ddmcc:/usr/local/docker/tomcat# docker exec -it tomcat1 /bin/bash
root@b91b07cde612:/usr/local/tomcat# 
root@b91b07cde612:/usr/local/tomcat# 
root@b91b07cde612:/usr/local/tomcat# cd webapps/ROOT/
root@b91b07cde612:/usr/local/tomcat/webapps/ROOT# echo "9090" >> index.jsp

输入192.168.132.129:9090 查看端口是否已追加

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tomcat2重复tomcat1的操作,追加端口9091

配置nginx

1,编写docker-compose.yml

version: '3.1'
services:
  nginx:
    restart: always
    image: nginx
    container_name: nginx
    ports:
      - 81:80
    volumes:
      - ./conf/nginx.conf:/etc/nginx/nginx.conf
      - ./wwwroot:/usr/share/nginx/wwwroot

2,创建文件夹/conf,并在其下面创建配置文件nginx.conf

user nginx;

worker_processes  1;

events {
    worker_connections  1024;
}

http {
    include       mime.types;
    default_type  application/octet-stream;
    sendfile        on;
    keepalive_timeout  65;
    upstream app {
    server 192.168.132.129:9090 weight=10;
    server 192.168.132.129:9091 weight=10;
    }

    server {
    listen       80;
    server_name  192.168.132.129;
    location / {
        proxy_pass http://app;
        index  index.html index.htm;
    }

    }
}

3,docker-compose up -d 启动nginx
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4,输入192.168.132.129:81可以看到反向代理到了9090和9091,并且实现了负载均衡

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