Kubernetes Container Orchestration Monitoring and Logging 4

Question 1

What does a Prometheus Alertmanager 'silences' feature allow you to do?

Accepted Answer

Suppress specific alerts for a defined time period

Answer

Alertmanager silences let you mute matching alerts for a specified duration, useful during planned maintenance windows.

Question 2

Which metric type in Prometheus represents a value that can go up and down, such as the number of active connections?

Accepted Answer

Gauge

Answer

A Gauge metric represents a value that can increase or decrease over time, making it suitable for measuring current state like active sessions.

Question 3

In Kubernetes, where are container logs stored on the node filesystem by default?

Accepted Answer

/var/log/containers/

Answer

Kubernetes symlinks container logs to `/var/log/containers/` on the node, pointing to the actual log files managed by the container runtime.

Question 4

What is the purpose of a Prometheus 'recording rule'?

Accepted Answer

Pre-compute expensive queries and store results as new metrics

Answer

Recording rules evaluate PromQL expressions on a schedule and store the results as new time series, reducing query load on dashboards.

Question 5

Which kubectl command streams live logs from all containers in a pod?

Accepted Answer

kubectl logs <pod> --all-containers -f

Answer

The `--all-containers` flag combined with `-f` streams live logs from every container in the specified Pod simultaneously.

Kubernetes Container Orchestration Practice Test