案例：一個朋友要用Nginx代理MySQL（MySQL局域網），不用***，不用NAT映射等，好吧，做個筆記。
Nginx版本：1.9.x（持tcp的負載均衡，nginx_tcp_proxy_module（姚偉斌阿里團隊也可以實現））
Nginx官方模塊： ngx_stream_core_module --with-stream_ssl_module（ssl協議支持，比如MySQL ssl）
官網：http://nginx.org/en/docs/stream/ngx_stream_core_module.html
1、查看現有編譯
--user=nginx --group=nginx --prefix=/usr/local/nginx --with-http_stub_status_module --with-http_ssl_module --with-http_realip_module --with-http_flv_module --with-http_mp4_module --with-http_gzip_static_module
2、重新編譯：
--user=nginx --group=nginx --prefix=/usr/local/nginx --with-http_stub_status_module --with-http_ssl_module --with-http_realip_module --with-http_flv_module --with-http_mp4_module --with-http_gzip_static_module --with-stream --with-stream_ssl_module
注意：--with-stream --with-stream_ssl_module
3、配置、檢測、重啓nginx：
配置：
stream {
upstream mysql {
zone myapp1 64k;
server localhost:3306 weight=1 max_fails=3 fail_timeout=30s;
#server 192.168.1.221:3306 weight=1 max_fails=2 fail_timeout=30s;
}
server {
listen 2188;
proxy_connect_timeout 1s;
proxy_timeout 3s;
proxy_pass mysql;
}
}檢測：
[root@autoCentos67X64 conf]# nginx -t nginx: the configuration file /usr/local/nginx/conf/nginx.conf syntax is ok nginx: configuration file /usr/local/nginx/conf/nginx.conf test is successful [root@autoCentos67X64 conf]#
啓動：
[root@autoCentos67X64 conf]# netstat -atupn|grep nginx tcp 0 0 0.0.0.0:2188 0.0.0.0:* LISTEN 2359/nginx [root@autoCentos67X64 conf]#
4、驗證：(轉載請保留：renzhiyuan.blog.51cto.com)
[root@log~]# mysql -uroot -prenzhiyuan -h 192.168.1.11 -P2188 Welcome to the MySQL monitor. Commands end with ; or \g. Your MySQL connection id is 3 Server version: 5.6.21-log MySQL Community Server (GPL) Copyright (c) 2000, 2013, Oracle and/or its affiliates. All rights reserved. Oracle is a registered trademark of Oracle Corporation and/or its affiliates. Other names may be trademarks of their respective owners. Type 'help;' or '\h' for help. Type '\c' to clear the current input statement. mysql>
注意：2188可是Nginx的端口，代理（負載）後端的MySQL。其它玩法大家可自己研究。