apache webserver:
service httpd status or
/etc/init.d/httpd status ( CentOS/RHEL )
service apache2 status or
/etc/init.d/apache2 status ( Debian/Ubuntu )
or :
apachectl status
... to restart the apache webserver, please use:
service httpd restart or
/etc/init.d/httpd restart ( CentOS/RHEL )
service apache2 restart or
/etc/init.d/apache2 restart ( Debian/Ubuntu )
nginx webserver:
service nginx status
/etc/init.d/nginx status
... to restart the nginx webserver, please use:
service nginx restart
/etc/init.d/nginx restart
If you experience issues with apache and/or nginx, please have a look at the corresponding log - files of the webservers and be reminded, that there are as well corresponding domain - specific log - files
( locations as described in the mentioned KB - article above ). If you can't solve issues on your own, please consider to post the errors from your logs here in the forum, so that others are able to make some suggestions to your issues, based on your error(s)/issue(s)/problem(s).
It is always wise to include your Plesk version, including the current MU - version. The latest MU - updates are posted as threads in the forum, as for example:
Plesk 12.0.18 MU#64 - Are you maybe experiencing a previous described issue(s) from these threads? Are there solutions and work-arounds described in these threads, which you tried and which didn't work for you? Which ones, please? Which errors did you get, when trying the solutions and work-arounds from the mentioned threads?