A fully running Nagios 4.1.1 on Debian 7 64bit ready to deploy on any VM that supports the OVAv2 appliance image format.
All password: astios2020
PLEASE CHANGE THE PASSWORDS IF YOU'RE USING THIS IN PRODUCTION.
Passwords to change:
1) Nagios admin web
2) MySQL root (also change in NagiosQL DB config file)
3) Root password
Also, ensure you change the timezones in the OS and php.ini files, these are important for all monitoring components, obviously.
Thanks and enjoy!