worker_processes  4;

error_log  /var/log/nginx/error.log;

events { worker_connections  1024; }
stream {
        server {
           listen 3307;
           proxy_pass client2.db.dev:3306;
           proxy_buffer_size 16k;
        }
        server {
           listen 3308;
           proxy_pass client1.db.dev:3306;
           proxy_buffer_size 16k;
        }
}