Ubuntu 19.04 will be supported for 9 months until January 2020. If you need Long Term Support, it is recommended you use Ubuntu 18.04 LTS instead.
Install Nagios core 4.4.1 on Ubuntu 18.04 Server
Nagios® Core™ is an Open Source system and network monitoring application. It watches hosts and services that you specify, alerting you when things go bad and when they get better.Nagios Core was originally designed to run under Linux, although it should work under most other unices as well.
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Install Webmin on Ubuntu 18.04 (Bionic Beaver) Server
Webmin is a web-based interface for system administration for Unix. Using any modern web browser, you can setup user accounts, Apache, DNS, file sharing and much more. Webmin removes the need to manually edit Unix configuration files like /etc/passwd, and lets you manage a system from the console or remotely.
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