Nikto web server scanner

MySQLTuner is a script written in Perl that will assist you with your MySQL configuration and make recommendations for increased performance and stability.

Sensible database change management

Development tree of Master High Availability Manager and tools for MySQL (MHA), Manager part

Percona Toolkit: a collection of advanced open source command-line tools.

Rex, the friendly automation framework

openQA web-frontend, scheduler and tools.

MRTG - Multi Router Traffic Grapher

A set of nagios checks for RabbitMQ using the management interface

Ansible role for building Nagios 4.

Nagios and NRPE checks for Elasticsearch cluster and nodes