所以我有这个 NGINX 组态档：

events { }
http {
    server {
        listen 443 ssl;
        ssl_certificate /home/dietpi/certs/cert.pem;
        ssl_certificate_key /home/dietpi/certs/privkey.pem.key;
        location / {
            proxy_set_header   X-Real-IP $remote_addr;
            proxy_set_header   X-Forwarded-For $proxy_add_x_forwarded_for;
            proxy_pass         http://localhost:3001/;
            proxy_http_version 1.1;
            proxy_set_header   Upgrade $http_upgrade;
            proxy_set_header   Connection "upgrade";
        }
    }
}

它是 Docker 容器的反向代理。它为我做 SSL。我想将 HTTP 重定向到 HTTPS，所以我尝试添加以下内容：

events { }
http {
    server {
        listen 80 default_server;
        server _;
        return 301 https://$host$request_uri;
    }
    server {
        listen 443 ssl;
        ssl_certificate /home/dietpi/certs/cert.pem;
        ssl_certificate_key /home/dietpi/certs/privkey.pem.key;
        location / {
            proxy_set_header   X-Real-IP $remote_addr;
            proxy_set_header   X-Forwarded-For $proxy_add_x_forwarded_for;
            proxy_pass         http://localhost:3001/;
            proxy_http_version 1.1;
            proxy_set_header   Upgrade $http_upgrade;
            proxy_set_header   Connection "upgrade";
        }
    }
}

但现在它不起作用（sudo nginx -t失败）。它是这样说的：

nginx: [emerg] "server" directive is not allowed here in /etc/nginx/nginx.conf:5
nginx: configuration file /etc/nginx/nginx.conf test failed

大多数遇到此错误的人往往http会将服务器块放在一个块中，而将其放在一个块中可以修复它。但是……我的server街区已经在http街区中了。那么我该如何解决呢？

uj5u.com热心网友回复：

错别字server而不是server_name在server {}块内

server {
  listen 80 default_server;
  server_name _;   # ? corrected
}