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nginx proxy_pass模块

千年寒冰火 人气:0

1.ngx_stream_proxy_module模块的proxy_pass指令

只能在server段使用使用, 只需要提供域名或ip地址和端口。

可以理解为端口转发,可以是tcp端口,也可以是udp端口。

server {
    listen 127.0.0.1:12345;
    proxy_pass 127.0.0.1:8080;
}
 
server {
    listen 12345;
    proxy_connect_timeout 1s;
    proxy_timeout 1m;
    proxy_pass example.com:12345;
}
 
server {
    listen 53 udp;
    proxy_responses 1;
    proxy_timeout 20s;
    proxy_pass dns.example.com:53;
}
 
server {
    listen [::1]:12345;
    proxy_pass unix:/tmp/stream.socket;

2.ngx_http_proxy_module模块的proxy_pass指令

3.proxy_pass后,后端服务器的url(request_uri)情况分析

server {
    listen      80;
    server_name www.test.com;
 
    # 情形A
    # 访问 http://www.test.com/testa/aaaa
    # 后端的request_uri为: /testa/aaaa
    location ^~ /testa/ {
        proxy_pass http://127.0.0.1:8801;
    }
    
    # 情形B
    # 访问 http://www.test.com/testb/bbbb
    # 后端的request_uri为: /bbbb
    location ^~ /testb/ {
        proxy_pass http://127.0.0.1:8801/;
    }
 
    # 情形C
    # 下面这段location是正确的
    location ~ /testc {
        proxy_pass http://127.0.0.1:8801;
    }
 
    # 情形D
    # 下面这段location是错误的
    #
    # nginx -t 时,会报如下错误: 
    #
    # nginx: [emerg] "proxy_pass" cannot have URI part in location given by regular 
    # expression, or inside named location, or inside "if" statement, or inside 
    # "limit_except" block in /opt/app/nginx/conf/vhost/test.conf:17
    # 
    # 当location为正则表达式时,proxy_pass 不能包含URI部分。本例中包含了"/"
    location ~ /testd {
        proxy_pass http://127.0.0.1:8801/;   # 记住,location为正则表达式时,不能这样写!!!
    }
 
    # 情形E
    # 访问 http://www.test.com/ccc/bbbb
    # 后端的request_uri为: /aaa/ccc/bbbb
    location /ccc/ {
        proxy_pass http://127.0.0.1:8801/aaa$request_uri;
    }
 
    # 情形F
    # 访问 http://www.test.com/namea/ddd
    # 后端的request_uri为: /yongfu?namea=ddd
    location /namea/ {
        rewrite    /namea/([^/]+) /yongfu?namea=$1 break;
        proxy_pass http://127.0.0.1:8801;
    }
 
    # 情形G
    # 访问 http://www.test.com/nameb/eee
    # 后端的request_uri为: /yongfu?nameb=eee
    location /nameb/ {
        rewrite    /nameb/([^/]+) /yongfu?nameb=$1 break;
        proxy_pass http://127.0.0.1:8801/;
    }
 
    access_log /data/logs/www/www.test.com.log;
}
 
server {
    listen      8801;
    server_name www.test.com;
    
    root        /data/www/test;
    index       index.php index.html;
 
    rewrite ^(.*)$ /test.php?u=$1 last;
 
    location ~ \.php$ {
        try_files $uri =404;
        fastcgi_pass unix:/tmp/php-cgi.sock;
        fastcgi_index index.php;
        include fastcgi.conf;
    }
 
    access_log /data/logs/www/www.test.com.8801.log;
}

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