PCA PCA Exporters & Integrations 2

Question 1

What is the Prometheus pushgateway used for?

Accepted Answer

Accepting metrics pushed by short-lived jobs that cannot be scraped

Answer

The Pushgateway is an intermediary that accepts metric pushes from batch jobs or ephemeral processes, holding them until Prometheus scrapes the gateway.

Question 2

What is a key drawback of using the Prometheus Pushgateway for all metrics?

Accepted Answer

Metrics persist after the originating job ends, hiding job failures

Answer

Pushed metrics remain in the Pushgateway until explicitly deleted, so a failed or stale job may still appear healthy because its last metrics are still present.

Question 3

Which Prometheus client library method is used to push metrics to a Pushgateway in the Go client?

Accepted Answer

push.New().Push()

Answer

The Go client's `push.New(url, job).Collector(c).Push()` chain sends a collector's metrics to the specified Pushgateway URL under the given job name.

Question 4

What label does the Pushgateway automatically add to all metrics to identify the originating job?

Accepted Answer

job

Answer

The Pushgateway uses the job name from the push URL path (`/metrics/job/<jobname>`) as the `job` label on all stored metrics.

Question 5

What HTTP method should a batch job use to delete its metrics from the Pushgateway after completion?

Accepted Answer

DELETE /metrics/job/<name>

Answer

Sending an HTTP DELETE to `/metrics/job/<jobname>` removes the metric group from the Pushgateway, preventing stale data from persisting.

(PCA) Prometheus Certified Associate Practice Test

(PCA) Prometheus Certified Associate Practice Test

PCA PCA Exporters & Integrations 2