I made the following observations, which are a bit unsatisfying:
You can delete a complete measurement with:
influx delete --bucket "telegraf/autogen" --predicate '_measurement="yourmeasurement' -o yourorg --start '1970-01-01T00:00:00Z' --stop '2025-12-31T23:59:00Z'
But you can’t delete data with specific tags from within:
influx delete --bucket "telegraf/autogen" --predicate '_measurement="yourmeasurement" AND yourtag="tagtodelete"' -o yourorg --start '1970-01-01T00:00:00Z' --stop '2025-12-31T23:59:00Z'
The Datapoints get dropped in this case but the tags are still present, which is highly undesireable.
See this Issue for it:
This is a bit of a showstopper for me.
