* Restarting nginx nginx [fail]. Where to watch logs?

Question

Nginx

sudo service nginx restart
 * Restarting nginx nginx                                                                      [fail]

Answer 1

Do it first nginx -t- this is a config test, it will show errors
. Look at the logs in /var/log/nginx/error.log, they are usually there

Answer 2

usually in the
nginx syslog -c /etc/nginx/nginx.conf -t
^ check the config for errors