How set timestamp with pushGateway using Python

[Lukas Müller de Oliveira]

Hi,

I'm using pushGateway to scrape some parts of my application that can't be scraped by Prometheus.

It is kind of a process that in the end I have a time series that I send to pushGateway.

From what I read in the documentation, despite sending the value of a metric in the push, I can't set the timestamp that I want it to be shown in Grafana(the timestamp of my time series), it is used the timestamp of when the push was sent.

How can i set a timestamp for each value?

#part of my code

registry = CollectorRegistry()

date = datetime.strptime('2021-11-04 10:45:32.259398', '%Y-%m-%d %H:%M:%S.%f')

g = Gauge('test_job_1', 'test_1', ['test','instance'], registry=registry)

g.labels('code_a','test').set(20)

g.set_time(date )#something like this, to set the date i want

push_to_gateway('localhost:9091', job='pushgateway', registry=registry)

Is there any way I can do this?

[Brian Candler]

You can't - and this is an anti-pattern for pushgateway.

pushgateway is for when a service is transient (e.g. a scheduled task which terminates), but it needs to leave its result lying around to be scraped at some point in the future.

You could consider using the remote_write protocol to write your data directly to prometheus, but this isn't well documented.  The simplest way would be to run a small prometheus instance on your remote node A, and get *that* to use the remote_write protocol to central node B.  Then you don't need to get involved with implementing the remote_write protocol yourself.