host and network monitoring system Icinga 2 is a general-purpose monitoring application to fit the needs of any size of network. Icinga 1.x was a Nagios fork; this new generation has been rewritten from scratch in C++, with multi-threading and cluster support. Features: * all standard features of Icinga and Nagios; * much faster and more scalable than Icinga 1 and Nagios; * new, more intuitive, template-based configuration format; * monitoring services on ICMP (ping) or TCP ports (HTTP, NNTP, POP3, SMTP, etc.) by executing checks (see monitoring-plugins*); * any small script following the Nagios plugin API can be used as a check plugin; * notifications about alerts for any custom script (with examples); * native support for Livestatus and Graphite. This is the metapackage to install all Icinga 2 features.