Telegraf tail pulgin - how to specify metric type?

Telegraf
,
1

I’m using prometheus and would like to use telegraf for collecting custom metrics.
I tried tail input plugin, but could not figure out how to get use of metric types such as counters.
Whatever metrics I add to tail input, they appear to be as gauges in prometheus output, i.e. values do not aggregate.
For example:
I have a file ingested by tail input plugin:

mytest_counter value=1
mytest_counter value=1

The output is:

# HELP mytest_counter Telegraf collected metric
# TYPE mytest_counter untyped
mytest_counter{host="..."} 1

Desired output:

mytest_counter{host="..."} 2

How can I make specific metrics behave as counters, so that they aggregate (sum) their values?

2

There is an issue open to add sum support to the basicstats aggregator which would allow this, but currently I don’t believe there is a way to do this: Add "sum" to basicstats aggregator · Issue #3467 · influxdata/telegraf · GitHub

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