Unable To Add SCHEDULED DOWN Time In (fan Nagios) Nagios.
It is about the issue of permission with Nagios.cmd tail -f /var/log/httpd/error_log File location : /var/log/Nagios/rw/nagios.cmd After giving a 777 permission to this file my scheduled downtime is working fine. Look the screenshot below. For all type of monitoring and open source issue , Ask your query in comment box.