PCA PCA Service Discovery & Configuration

Question 1

Which Prometheus service discovery mechanism discovers targets using Kubernetes API watch calls?

Accepted Answer

kubernetes_sd_config

Answer

`kubernetes_sd_config` uses the Kubernetes API to discover pods, services, endpoints, ingresses, and nodes as scrape targets.

Question 2

In Prometheus file-based service discovery, what file formats are supported?

Accepted Answer

JSON and YAML

Answer

Prometheus `file_sd_config` accepts target group files written in either JSON or YAML format.

Question 3

How frequently does Prometheus reload file-based service discovery files by default?

Accepted Answer

Immediately via inotify/fsnotify

Answer

Prometheus uses filesystem notifications (inotify on Linux) to detect file_sd file changes and reloads them immediately without waiting for a timer.

Question 4

What is the purpose of the `relabel_configs` section in a Prometheus scrape_config?

Accepted Answer

Transform or filter discovered target labels before scraping

Answer

`relabel_configs` runs a pipeline of label transformations on discovered target metadata, controlling which targets are scraped and how they are labeled.

Question 5

Which relabeling action drops a target so Prometheus does not scrape it?

Accepted Answer

drop

Answer

The `drop` action in relabel_configs causes Prometheus to skip any target whose labels match the configured regex.

(PCA) Prometheus Certified Associate Practice Test

(PCA) Prometheus Certified Associate Practice Test

PCA PCA Service Discovery & Configuration