Fixed sinceThe problem described in this KB article has been completely fixed since Parallels Plesk Panel 10.4.x version.
SymptomsWhen performing any actions, involving apache restart, it fails to start. Actions might be: domain/subdomain creation, ftp passwords changing, ssl certificates operations, etc.
# /usr/local/psa/admin/bin/websrvmng --restart
takes more than a minute and all websites are offline.
CauseIt happens due to some child processes being left unkilled after stopping apache.
'killall apache2' helps to stop it completely and the start successfully.
ResolutionThis problem was fixed in Micro-Update 9 for Parallels Plesk Panel 10.1.1.
Install all available updates on the server. Check the article to see the how to install Micro-Updates properly:
9224 Using Micro-Updates in Parallels Plesk Panel 9.x, 10.x and Parallels Small Business Panel