Start background process in check shell script

Can somebody help me to start a background process from a nagios check script?
The following command cause time out error:

I need this because the check i want to perform, runs more then 10 minutes and i should not set this timeout value in the nagios config file.

i have some long running checks i use a different approach, the long running process is called by a cronjob, and only the output is evaluated by the nagios plugin. this way there’s no need to be worrried about the nagios and plugin timeouts.
Not sure if this helps you but it’s a solution. :slight_smile: