nginx tcp代理功能由nginx_tcp_proxy_module模块提供，同时监测后端主机状态。该模块包括的模块有： ngx_tcp_module, ngx_tcp_core_module, ngx_tcp_upstream_module, ngx_tcp_proxy_module, ngx_tcp_upstream_ip_hash_module。
1. 安装
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# wget http://nginx.org/download/nginx-1.4.4.tar.gz # tar zxvf nginx-1.4.4.tar.gz # cd nginx-1.4.4 # ./configure --add-module=/path/to/nginx_tcp_proxy_module # make # make install |
2. 配置
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http { listen 80; location /status { check_status; } } tcp { upstream cluster_www_ttlsa_com { # simple round-robin server 127.0.0.1:1234; check interval=3000 rise=2 fall=5 timeout=1000; #check interval=3000 rise=2 fall=5 timeout=1000 type=ssl_hello; #check interval=3000 rise=2 fall=5 timeout=1000 type=http; #check_http_send "GET / HTTP/1.0\r\n\r\n"; #check_http_expect_alive http_2xx http_3xx; } server { listen 8888; proxy_pass cluster_www_ttlsa_com; } } |
这会出现一个问题，就是tcp连接会掉线。原因在于当服务端关闭连接的时候，客户端不可能立刻发觉连接已经被关闭，需要等到当Nginx在执行check规则时认为服务端链接关闭，此时nginx会关闭与客户端的连接。
3. 保持连接配置
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http { listen 80; location /status { check_status; } } tcp { timeout 1d; proxy_read_timeout 10d; proxy_send_timeout 10d; proxy_connect_timeout 30; upstream cluster_www_ttlsa_com { # simple round-robin server 127.0.0.1:1234; check interval=3000 rise=2 fall=5 timeout=1000; #check interval=3000 rise=2 fall=5 timeout=1000 type=ssl_hello; #check interval=3000 rise=2 fall=5 timeout=1000 type=http; #check_http_send "GET / HTTP/1.0\r\n\r\n"; #check_http_expect_alive http_2xx http_3xx; } server { listen 8888; proxy_pass cluster_www_ttlsa_com; so_keepalive on; tcp_nodelay on; } } |
nginx_tcp_proxy_module模块指令具体参见: http://yaoweibin.github.io/nginx_tcp_proxy_module/README.html
原文地址：https://www.cnblogs.com/felixzh/p/8375978.html