Where is the data stored when we use the Prometheus Output Plugin?

Telegraf
1

Can someone update on where the collected data from input plugin is saved when we use Prometheus Output Plugin?

2

@telegraf_vmware The Prometheus output plugin exposes a port on your Telegraf host and publishes Prometheus-formatted metrics on that port at the /metrics path (by default). You can scrape those metrics and store them somewhere else, but the plugin itself doesn’t send Prometheus-formatted metrics to a remote endpoint.

3

Thanks for the update, but let me rephrase my question.

  1. Where is the data stored when the metrics is collected by the input plugin?
  2. Also, will there not be a time difference as the input metrics will be collected in the interval mentioned in the configuration and the time it is scrapped by the prometheus output plugin.

Example :

Input plugin collects the metrics every 5 min i.e 10:00 AM , 10:05 AM … and son on

and this is redirected to the Prometheus Output plugin.

I use Prometheus to scrap the metrics which is at relative interval from the time it starts. So if I start Prometheus at 10:02 at 300 seconds interval, any metrics collected by input plugin at 10:05 will be scraped only at 10:07 which is totally wrong.

Any prometheus output plugin should be an on-demand one which when called, should be calling the input plugin.