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add note to README re. database creation calls per PR comments

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ncohensm 2016-08-23 10:06:43 -07:00
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plugins/inputs/http_listener/README.md
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The HTTP listener is a service input plugin that listens for messages sent via HTTP POST.
The plugin expects messages in the InfluxDB line-protocol ONLY, other Telegraf input data formats are not supported.
The intent of the plugin is to allow Telegraf to serve as a proxy/router for the /write endpoint of the InfluxDB HTTP API.
When chaining Telegraf instances using this plugin, CREATE DATABASE requests receive a 200 OK response with message body `{"results":[]}` but they are not relayed. The output configuration of the Telegraf instance which ultimately submits data to InfluxDB determines the destination database.
See: [Telegraf Input Data Formats](https://github.com/influxdata/telegraf/blob/master/docs/DATA_FORMATS_INPUT.md#influx).
Example: curl -i -XPOST 'http://localhost:8186/write' --data-binary 'cpu_load_short,host=server01,region=us-west value=0.64 1434055562000000000'