Telegraf metrics are the internal representation used to model data during processing. These metrics are closely based on InfluxDB’s data model and contain four main components:
- Measurement name: Description and namespace for the metric.
- Tags: Key/Value string pairs and usually used to identify the metric.
- Fields: Key/Value pairs that are typed and usually contain the metric data.
- Timestamp: Date and time associated with the fields.
Telegraf metrics exist only in memory and must be converted to a concrete representation to be transmitted or viewed. Telegraf provides output data formats (also known as serializers) for these conversions. Telegraf’s default serializer converts to InfluxDB line protocol, which provides a high performance and one-to-one direct mapping from Telegraf metrics.
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