nginx: [emerg] unknown “connection_upgrade” variable

当我们添加nginx 反向代理长连接后，nginx -t提示如下

nginx: [emerg] unknown "connection_upgrade" variable
nginx: configuration file /www/server/nginx/conf/nginx.conf test failed

nginx配置文件

location ^~ /
{
    proxy_pass https://127.0.0.1:1443/;
    proxy_set_header Host $host;
    proxy_set_header X-Real-IP $remote_addr;
    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
    proxy_set_header REMOTE-HOST $remote_addr;
    proxy_http_version 1.1;
    proxy_set_header Upgrade $http_upgrade;
    proxy_set_header Connection $connection_upgrade;
}

解决办法

在nginx主配置文件http标签下添加如下几行

主配置文件yum安装默认路径为/etc/nginx/conf/nginx.conf

       map $http_upgrade $connection_upgrade {
           default upgrade;
           ''      close;
       }

然后再次nginx -t即解决问题