我想在 nginx 中使用 ssl。我创建了必要的证书：
[root@arch ssl]# pwd
/etc/nginx/ssl
[root@arch ssl]# ls -l
total 12
-rwx------ 1 root root 1346 Aug 3 14:36 server.crt
-rwx------ 1 root root 1115 Aug 3 14:36 server.csr
-rwx------ 1 root root 1743 Aug 3 14:35 server.key
但是 nginx 无法加载这些文件。它说找不到它们：
systemctl -l status nginx
nginx.service - A high performance web server and a reverse proxy server
Loaded: loaded (/usr/lib/systemd/system/nginx.service; disabled)
Active: failed (Result: exit-code) since Sun 2014-08-03 14:50:04 EDT; 21min ago
Process: 21391 ExecStart=/usr/bin/nginx -g pid …