tomcat多實例部署和nginx反向代理

                server 127.0.0.1:8080  weight=10 max_fails=2 fail_timeout=30s;
                server 127.0.0.1:8082  weight=30 max_fails=2 fail_timeout=30s;
　　　　　　　　　# weight 權重 請求分配 max_fails 失敗次數，超過不請求 fail_tiameout 超時時間
                }
server
                {
                listen                   80;  #監聽端口
                server_name              www.teach.com; #域名
                access_log               /export/servers/nginx/logs/access.log main;  #項目日志
                error_log                /export/servers/nginx/logs/error.log warn;
                chunkin on;
                error_page 411 = @my_error;
                location @my_error {
                chunkin_resume;
                 }
                root /export/apps/;
      location / {
        proxy_next_upstream     http_500 http_502 http_503 http_504 error timeout invalid_header;
        proxy_set_header        Host  $host;
        proxy_set_header        X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_pass              http://tomcat_teach;
        expires                 1d;
        }
        location /logs/ {
                autoindex       off;
                deny all;
        }
}