systemctl status nginx

● nginx.service - A high performance web server and a reverse proxy server
   Loaded: loaded (/lib/systemd/system/nginx.service; enabled; vendor preset: enabled)
   Active: active (running) since Sat 2020-12-19 01:27:41 UTC; 2h 28min ago
     Docs: man:nginx(8)
  Process: 6797 ExecStop=/sbin/start-stop-daemon --quiet --stop --retry QUIT/5 --pidfile /run/nginx.pid (code=exited, status=0/SUCCESS)
  Process: 7545 ExecReload=/usr/sbin/nginx -g daemon on; master_process on; -s reload (code=exited, status=0/SUCCESS)
  Process: 6854 ExecStart=/usr/sbin/nginx -g daemon on; master_process on; (code=exited, status=0/SUCCESS)
  Process: 6847 ExecStartPre=/usr/sbin/nginx -t -q -g daemon on; master_process on; (code=exited, status=0/SUCCESS)
 Main PID: 6859 (nginx)
    Tasks: 3 (limit: 2348)
   CGroup: /system.slice/nginx.service
           ├─6859 nginx: master process /usr/sbin/nginx -g daemon on; master_process on;
           ├─7546 nginx: worker process
           └─7547 nginx: cache manager process

Dec 19 01:27:41 ip-172-31-46-201 systemd[1]: Starting A high performance web server and a reverse proxy server...
Dec 19 01:27:41 ip-172-31-46-201 systemd[1]: nginx.service: Failed to parse PID from file /run/nginx.pid: Invalid argument
Dec 19 01:27:41 ip-172-31-46-201 systemd[1]: Started A high performance web server and a reverse proxy server.
Dec 19 03:02:42 ip-172-31-46-201 systemd[1]: Reloading A high performance web server and a reverse proxy server.
Dec 19 03:02:42 ip-172-31-46-201 systemd[1]: Reloaded A high performance web server and a reverse proxy server.