I have set up SNMPv3 for most of my APC UPS´s. The commands executed by the APC Plugin Pack are working in the console logged in as root or as centreon-engine, but will not work on the GUI. I receive the error text Status Unknown “Execute command failed”

Am I missing permissions on the script? Which User is used to excute the scripts?

Script is located under:

/usr/lib/centreon/plugins//centreon_ups_apc.pl

Thanks in advance.