使用Nginx给同一个域名配置多个项目

一、概述

使用Nginx要在同一个域名下配置多个项目有两种方式：
a. nginx按不同的目录分发给不同的项目；
b. 启用二级域名，不同的项目分配不同的二级域名。

二、nginx按不同的目录分发给不同的项目

nginx.conf配置部分：
server {
listen 80;
server_name example.com;

location ^~ /project1/ {
    proxy_pass     http://localhost:8081/;
    proxy_set_header  Host       $host;
    proxy_set_header  X-Real-IP    $remote_addr;
    proxy_set_header  X-Forwarded-For $proxy_add_x_forwarded_for;
}

location ^~ /project2/ {
    proxy_pass     http://localhost:8082/;
    proxy_set_header  Host       $host;
    proxy_set_header  X-Real-IP    $remote_addr;
    proxy_set_header  X-Forwarded-For $proxy_add_x_forwarded_for;
}

location / {
   proxy_pass     http://localhost:8080;
   proxy_set_header  Host       $host;
   proxy_set_header  X-Real-IP    $remote_addr;
   proxy_set_header  X-Forwarded-For $proxy_add_x_forwarded_for;
}

}
这里配置了三个项目：

http://example.com/project1路径分发到http://localhost:8081/
http://example.com/project2路径分发到http://localhost:8082/
其他路径分发到http://localhost:8080

• 关键点：

1. location ^~ /project2/
   project2前后都要加斜杠，否则域名映射有问题。
2. proxy_pass http://localhost:8082/;
   路径最后加斜杠：映射的是http://localhost:8082；
   路径最后不加斜杠：映射的是http://localhost:8082/project2。
   实际应用中，根据需要选择。
   完整nginx.conf：

#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;

    server {
        listen       8089;
        server_name  localhost;

        #charset koi8-r;

        #access_log  logs/host.access.log  main;

        
        location / {
            #root   html;
            #index  index.html index.htm;
        }


	location ^~/jwt/ {
           proxy_pass http://172.20.8.186:8080/;
	   proxy_set_header  Host       $host;
    	   #proxy_cookie_path  /jwt  / ;
	   proxy_set_header  X-Real-IP    $remote_addr;
    	   proxy_set_header  X-Forwarded-For $proxy_add_x_forwarded_for;
        }
	location ^~/home/ {
           proxy_pass http://localhost:8082/;
           proxy_set_header  Host       $host;
    	   proxy_set_header  X-Real-IP    $remote_addr;
    	   proxy_set_header  X-Forwarded-For $proxy_add_x_forwarded_for;
	}
        
            

        #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;
        }

        # 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$ {
        #    root           html;
        #    fastcgi_pass   127.0.0.1:9000;
        #    fastcgi_index  index.php;
        #    fastcgi_param  SCRIPT_FILENAME  /scripts$fastcgi_script_name;
        #    include        fastcgi_params;
        #}

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


    # another virtual host using mix of IP-, name-, and port-based configuration
    #
    #server {
    #    listen       8000;
    #    listen       somename:8080;
    #    server_name  somename  alias  another.alias;

    #    location / {
    #        root   html;
    #        index  index.html index.htm;
    #    }
    #}


    # HTTPS server
    #
    #server {
    #    listen       443 ssl;
    #    server_name  localhost;

    #    ssl_certificate      cert.pem;
    #    ssl_certificate_key  cert.key;

    #    ssl_session_cache    shared:SSL:1m;
    #    ssl_session_timeout  5m;

    #    ssl_ciphers  HIGH:!aNULL:!MD5;
    #    ssl_prefer_server_ciphers  on;

    #    location / {
    #        root   html;
    #        index  index.html index.htm;
    #    }
    #}

}

三、启用二级域名，不同的项目分配不同的二级域名

server {
listen 80;
server_name example.com;
location / {
proxy_pass http://localhost:8080;
proxy_set_header Host $host;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
}
}
#project1

server {
listen 80;
server_name project1.example.com;
location / {
proxy_pass http://localhost:8081;
proxy_set_header Host $host;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
}
}
#project2

server {
listen 80;
server_name project2.example.com;
location / {
proxy_pass http://localhost:8082;
proxy_set_header Host $host;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
}
}
说明：
域名example.com映射到http://localhost:8080;
域名project1.example.com映射到http://localhost:8081;
域名project2.example.com映射到http://localhost:8082;
注意：通过代理后，访问域名就可以访问到对应的项目。

四、如何选择

如果是单独子应用，有足够的域名可用，推荐使用第二种方式。测试环境，推荐使用第一种方式。