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metrics: distributed measurement system
=======================================
Goals
-----
- essential, simple and reliable.
- minimum maintenance.
Architecture
------------
- probes: run probes that gather data from the current or any remote node.
- analyzers: process collected hosts, triggering events (notifications, graphing, etc).
- syncer: send collected and analyzed data to remote locations.
Worflow
-------
- cronjob: synced dispatch.
- command line: asynced dispatch.
Plugable
--------
- plugin lookup in shared folders such as `~/.local/share` and `/usr/local/share`.
- analyzer cronjobs detects collected data and dispatch available analyzers.
Formats
-------
- outputs: yaml, json or any other format understood by each probe/analyzer pair.
- version field: so analyzers knows by which schema they should process data.
Filesystem
----------
- unique locations per host/probe/analyzer to ease syncing.
- folders: {/etc,/var/lib}/metrics/$HOSTNAME/{probes,analyzers,syncers}/{localhost,$HOST}/$NAME/.
- files: config.yaml (failing back to defaults) and $TIMESTAMP.{json,yaml,rrd,etc}.
Usage
-----
metrics <action> <target>
References
----------
* [MonitoringScape: Definitive IT Monitoring Guide - BigPanda](https://bigpanda.io/monitoringscape/).
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