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

file_sd_config

Answer

dns_sd_config

Answer

http_sd_config

Question 2

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

Accepted Answer

JSON and YAML

Answer

JSON only

Answer

YAML only

Answer

CSV and JSON

Question 3

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

Accepted Answer

Immediately via inotify/fsnotify

Answer

5 seconds

Answer

30 seconds

Answer

5 minutes

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

Rename metric names before storage

Answer

Rewrite alert labels before sending to Alertmanager

Answer

Encode labels for remote write

Question 5

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

Accepted Answer

drop

Answer

keep

Answer

labelmap

Answer

replace

Question 6

What meta-label does Prometheus kubernetes_sd_config expose for a pod's namespace?

Accepted Answer

__meta_kubernetes_pod_namespace

Answer

__meta_kubernetes_namespace

Answer

__meta_kubernetes_pod_label_namespace

Answer

__meta_k8s_ns