FastForward

Flexible operating-system event and metric forwarding agent. Receives input and forwards output using plugins.

     

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KairosDB

KairosDB is a fast distributed scalable time series database written on top of Cassandra. RESTful JSON-based query/results. Includes flot-based visualization.

     

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Monit

An open source utility for managing and monitoring processes, programs, files, directories and filesystems

     

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Puppet

Puppet is a tool designed to manage the configuration of Unix-like and Microsoft Windows systems declaratively.

     

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