PCA PCA Service Discovery & Targets

Question 1

Which Prometheus configuration block defines how targets are discovered dynamically in a Kubernetes cluster?

Accepted Answer

scrape_configs with kubernetes_sd_configs

Answer

The scrape_configs block with kubernetes_sd_configs enables Prometheus to dynamically discover targets in a Kubernetes cluster.

Question 2

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

Accepted Answer

To rewrite or filter target labels before scraping

Answer

relabel_configs lets you rewrite, drop, or keep target labels before Prometheus scrapes them.

Question 3

Which action in relabel_configs drops a target entirely from the scrape list?

Accepted Answer

drop

Answer

The `drop` action in relabel_configs removes a target if the source label value matches the specified regex.

Question 4

In Prometheus file-based service discovery, which file format is used to define static targets?

Accepted Answer

JSON or YAML

Answer

File-based service discovery (file_sd_configs) reads target definitions from JSON or YAML files.

Question 5

What does the `__address__` label represent in Prometheus service discovery?

Accepted Answer

The host:port of the scrape target

Answer

The __address__ label holds the host:port string that Prometheus will use to scrape a target.

(PCA) Prometheus Certified Associate Practice Test