Grafana + Graylog + PFSense

Cross-posted from here:

I’m getting an error while adding a data input that the time field ‘timestamp’ doesn’t exist. (The input saves fine.) Fresh instance of Grafana. I’ve checked my index and confirmed it does. It’s localhost, HTTP, and doesn’t require authentication (although I’ll likely change this). Any ideas?

I’ve seen a guide here and there, and they usually involve content packs. I’m doing it from scratch, I’ve written my own extractors and they work well. (No content pack contained stuff for DHCP, and the filterlog ones were incomplete.) One guide involves Cerebro, but I don’t see why I need that. I want to have as little dependencies as possible. I haven’t seen anything from Grafana that it needs Cerebro.