The carbon2 serializer translates the Telegraf metric format to the Carbon2 format.
[[outputs.file]]
## Files to write to, "stdout" is a specially handled file.
files = ["stdout", "/tmp/metrics.out"]
## Data format to output.
## Each data format has its own unique set of configuration options, read
## more about them here:
## https://github.com/influxdata/telegraf/blob/master/docs/DATA_FORMATS_OUTPUT.md
data_format = "carbon2"
## Optionally configure metrics format, whether to merge metric name and field name.
## Possible options:
## * "field_separate"
## * "metric_includes_field"
## * "" - defaults to "field_separate"
# carbon2_format = "field_separate"Standard form:
metric=name field=field_1 host=foo 30 1234567890
metric=name field=field_2 host=foo 4 1234567890
metric=name field=field_N host=foo 59 1234567890
Carbon2 serializer has a configuration option - carbon2_format - to change how
metrics names are being constructed.
By default metric will only inclue the metric name and a separate field field
will contain the field name.
This is the behavior of carbon2_format = "field_separate" which is the default
behavior (even if unspecified).
Optionally user can opt in to change this to make the metric inclue the field name
after the _.
This is the behavior of carbon2_format = "metric_includes_field" which would
make the above example look like:
metric=name_field_1 host=foo 30 1234567890
metric=name_field_2 host=foo 4 1234567890
metric=name_field_N host=foo 59 1234567890
The serializer converts the metrics by creating intrinsic_tags using the combination of metric name and fields.
So, if one Telegraf metric has 4 fields, the carbon2 output will be 4 separate metrics.
There will be a metric tag that represents the name of the metric and a field tag to represent the field.
If we take the following InfluxDB Line Protocol:
weather,location=us-midwest,season=summer temperature=82,wind=100 1234567890
after serializing in Carbon2, the result would be:
metric=weather field=temperature location=us-midwest season=summer 82 1234567890
metric=weather field=wind location=us-midwest season=summer 100 1234567890
When a field key or tag key/value have spaces, spaces will be replaced with _.
When a tag's value is empty, it will be replaced with null