icinga2-classicui software package provides host and network monitoring system - classic UI, you can install in your Debian 8 (Jessie) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install icinga2-classicui
icinga2-classicui is installed in your system.
Make ensure the icinga2-classicui package were installed using the commands given below,
$ sudo dpkg-query -l | grep icinga2-classicui *
You will get with icinga2-classicui package name, version, architecture and description in a table
| Distro | Debian 8 jessie |
| Section | Administration Utilities |
| Package | icinga2-classicui |
| Version | 2.1.1-1 |
| Description | host and network monitoring system - classic UI |
| Sub Section | Admin |