SOLVED: Trouble parsing timestamp in promtail

I have log files with an almost RFC3339Nano formatted timestamp. But only almost.
When trying to set the log entry pipeline as part of a pipeline, promtail complains about “extracted data did not contain a timestamp”.

A log line can look like this:

227320 20200519T232044.113+0200 WARN hostname1 System.Scheduler.

What are my options for using that timestamp in the pipeline, getting correct log entry timestamps in Loki (and Grafana) down the road?

Solved it.

You can enter any custom date format in the format section in promtail’s YAML config file. In my case it was as simple as:

      - timestamp:
            source: time
            format: 20060102T150405.000-0700