1、写在前面

因为nginx是常用的负载均衡，在linux上有时只暴露80端口，但是linux有时需要安装很多服务，所有需要用nginx进行服务暴露，特别是docker

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2、核心操作

• window安装nginx
• 启动nginx
• 场景一：多服务负载
• 场景二：多个服务路径负载
• nginx配置说明：https://www.runoob.com/w3cnote/nginx-setup-intro.html
• nginx刷新命令：nginx.exe -s reload（没有响应就代表成功）
• 参考linux负载：https://www.jianshu.com/p/dbb864b3bb87
• nginx学习视频：https://www.bilibili.com/video/av83533693

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3、具体操作

3.1、window安装nginx

• nginx官方地址：http://nginx.org/

• 直接解压到指定的文件夹即可

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3.2、启动nginx

• 双击nginx.exe接口（如果页面一闪而过就代表成功）
• 如果启动报错，可以查看logs里面的具体内容

• 访问页面：localhost

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3.3、多服务负载

• 配置config参考:https://www.runoob.com/w3cnote/nginx-setup-intro.html

#user  nobody;
worker_processes  1;

#error_log  logs/error.log;
#error_log  logs/error.log  notice;
#error_log  logs/error.log  info;

#pid        logs/nginx.pid;


events {
    worker_connections  1024;
}


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;
    #tcp_nopush     on;

    #keepalive_timeout  0;
    keepalive_timeout  65;

    #gzip  on;
    
    upstream mytomcat {   
      server 127.0.0.1:8082 weight=1;
      server 127.0.0.1:8083 weight=2;
      server 127.0.0.1:8084 weight=1;
    }

    server {
        listen       80;
        server_name  localhost;

        #charset koi8-r;

        #access_log  logs/host.access.log  main;

        location / {
           proxy_pass  http://mytomcat;
        }
        
        #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   html;
        }
    }

}

• 修改地方如下：

• 此时刷新就可以成功负载

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3.3、多服务负载

• 根据域名进行多服务负载

#user  nobody;
worker_processes  1;

#error_log  logs/error.log;
#error_log  logs/error.log  notice;
#error_log  logs/error.log  info;

#pid        logs/nginx.pid;


events {
    worker_connections  1024;
}


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;
    #tcp_nopush     on;

    #keepalive_timeout  0;
    keepalive_timeout  65;

    #gzip  on;
    
    upstream mytomcat1 {   
      server 127.0.0.1:8082 weight=1;
      server 127.0.0.1:8084 weight=1;
    }
    upstream mytomcat2 {   
      server 127.0.0.1:8083;
    }

    server {
        listen       80;
        server_name  www.enzo.com;

        #charset koi8-r;

        #access_log  logs/host.access.log  main;
        
        #proxy_set_header X-Forwarded-Host $host;
        #proxy_set_header X-Forwarded-Server $host;
        #proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;

        location /a/ {
           proxy_pass  http://mytomcat1/;
        }
        
        location /b/ {
           proxy_pass  http://mytomcat2/;
        }
        
        #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   html;
        }
    }
}

• 前提是我在host上配置了：