Hi All,

I am trying out some custom metrics using the prometheus push gateway 
service in AWS EC2 instance. Below is my use case.

1) Instance A - running service xyz and its related metrics are pushed to 
push-gateway running in the same instance.
2) Instance B - Prometheus is scraping the metrics from Gateway and it is 
visualized in Grafana.

Issue:

1) When the instance A is down, the prometheus lost its previously scraped 
metrics. Ideally, it should have saved the scraped metrics from the gateway 
though when the instance A is down.
    But it is not happening at my end. Could anyone please help me with 
that?

Thanks,
Rajesh

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