Is it possible to trigger Prometheus scrape ? i.e. either from the Prometheus web UI or using some other command line utility ?
2 Answers
Prometheus scrape is built to use polling according to your interval configuration.
In some cases you might need to send the metrics in a specific time in point, thus Prometheus provides the Pushgateway
Just be aware of the drawbacks when using Pushgateway and when to use it.
Prometheus doesn't provide the ability for manually triggered scrape. But such an ability is provided by vmagent - lightweight Prometheus-compatible scraper I work on. It provides the response link per each scrape target at http://vmagent:8429/targets page. Click on the response link in order to trigger the scrape on vmagent behalf to the given target. The link returns plain response from the given scrape target. Note that vmagent doesn't store metrics obtained via manual scrape.
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