无法重启 nginx 网络服务器

Question

我有一个 DigitalOcean droplet，在将 laravel 应用程序投入生产后，我尝试了以下命令：

sudo systemctl reload nginx

但我收到此错误：

Job for nginx.service failed because the control process exited with error code.
See "systemctl status nginx.service" and "journalctl -xe" for details.

我跑了 sudo nginx -t 看看是否有错误，但是 conf 和语法没问题，然后我跑了：

sudo nano /var/log/nginx/error.log

我得到了这个：

2020/01/16 14:53:53 [notice] 14195#14195: signal process started
2020/01/16 14:53:53 [error] 14195#14195: invalid PID number "" in "/run/nginx.pid"
2020/01/16 14:53:53 [emerg] 14198#14198: bind() to 0.0.0.0:443 failed (98: Address already in use)
2020/01/16 14:53:53 [emerg] 14198#14198: bind() to 0.0.0.0:80 failed (98: Address already in use)
2020/01/16 14:53:53 [emerg] 14198#14198: bind() to 0.0.0.0:443 failed (98: Address already in use)
2020/01/16 14:53:53 [emerg] 14198#14198: bind() to 0.0.0.0:80 failed (98: Address already in use)
2020/01/16 14:53:53 [emerg] 14198#14198: bind() to 0.0.0.0:443 failed (98: Address already in use)
2020/01/16 14:53:53 [emerg] 14198#14198: bind() to 0.0.0.0:80 failed (98: Address already in use)
2020/01/16 14:53:53 [emerg] 14198#14198: bind() to 0.0.0.0:443 failed (98: Address already in use)
2020/01/16 14:53:53 [emerg] 14198#14198: bind() to 0.0.0.0:80 failed (98: Address already in use)
2020/01/16 14:53:53 [emerg] 14198#14198: bind() to 0.0.0.0:443 failed (98: Address already in use)
2020/01/16 14:53:53 [emerg] 14198#14198: bind() to 0.0.0.0:80 failed (98: Address already in use)
2020/01/16 14:53:53 [emerg] 14198#14198: still could not bind()

知道为什么我无法重新启动我的网络服务器，我的网络仍然可见，但我似乎无法重新启动或重新加载 nginx。

Answer 1

/run/nginx.pid 似乎有问题，由于某种原因它是空的。

首先检查进程ps -ef | grep nginx为nginx找到threre根进程（在我的情况下7388）

root@keybu:/var/www/keybu_production#  ps -ef | grep nginx
root      2314  9443  0 21:28 pts/0    00:00:00 grep nginx
root      7388     1  0  2019 ?        00:00:00 nginx: master process /usr/sbin/nginx -g daemon on; master_process on;
nginx    23709  7388  0 Jan15 ?        00:00:04 nginx: worker process

然后杀死它：

kill -9 7388

• 检查是否没有运行 nginx 进程，如果是也杀死它。

然后重启nginxservice nginx start

• 第二种解决方案是将进程的 ID 号写入/run/nginx.pid 但尚未测试