nginx: [warn] the "listen ... http2" directive is deprecated

在新服务器上使用原vhost配置文件应用时出现报错：

root@zrblog:~# /usr/local/nginx/sbin/nginx -t
nginx: [warn] the "listen ... http2" directive is deprecated, use the "http2" directive instead in /usr/local/nginx/conf/vhost/vpsaa.com.conf:72
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

查了下，这是Nginx配置文件/usr/local/nginx/conf/vhost/zrblog.net.conf 的第72行使用了过时的语法listen ... http2，Nginx 建议使用单独的http2指令来启用 HTTP/2，需要将原来的：

listen 443 ssl http2;
#listen [::]:443 ssl http2;

修改为：

listen 443 ssl;
#listen [::]:443 ssl;
http2 on;

完成后再试OK！

/usr/local/nginx/sbin/nginx -t
service nginx reload