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License: Apache License 2.0
Overview ------------------------------------------------------------------------------- Graphite consists of two major components 1) the frontend Django webapp that runs under mod_python Apache 2) the backend carbon-cache.py daemon Client applications connect to the running carbon-cache.py daemon on port 2003 and send it lines of text of the following format: "my.metric.name value unix_timestamp", for example: "performance.servers.www01.cpuUsage 42.5 1208815315" The metric name is like a filesystem path that uses . as a separator instead of / The value is some scalar integer or floating point value The unix_timestamp is unix epoch time, as an integer Each line like this corresponds to one data point for one metric. Once you've got some clients sending data to carbon-cache, you can view graphs of that data in the frontend webapp. Webapp Installation ------------------------------------------------------------------------------- Use the instructions in the INSTALL file. Running carbon-cache.py ------------------------------------------------------------------------------- First you must tell carbon-cache what user it should run as. This must be a user with write privileges to $GRAPHITE_ROOT/storage/whisper/ Specify the user account in $GRAPHITE_ROOT/carbon/conf/carbon.conf This user must also have write privileges to $GRAPHITE_ROOT/storage/log/carbon-cache/ Writing a client ------------------------------------------------------------------------------- First you obviously need to decide what data it is you want to graph with graphite. The script examples/example-client.py demonstrates a simple client that sends loadavg data for your local machine to carbon on a minutely basis. The default storage schema stores data in one-minute intervals for 2 hours. This is probably not what you want so you should create a custom storage schema according to the docs on the graphite wiki (http://graphite.wikidot.com)
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