🎁 New User? Get 20% off your first purchase with code NEWUSER20 · ⚡ Instant download · 🔒 Secure checkout Register Now →
Menu

Categories

DevOps Intermediate

What is Prometheus?

An open-source monitoring and alerting toolkit that collects time-series metrics using a pull-based model.

Prometheus scrapes metrics from instrumented targets at configured intervals. It stores data in a time-series database and provides PromQL (Prometheus Query Language) for powerful querying. Alertmanager handles alert routing and notification.

Key concepts include metrics types (counter, gauge, histogram, summary), labels for dimensional data, service discovery, and recording rules. Prometheus + Grafana is the de facto standard for Kubernetes monitoring.

Related Terms

Kubernetes ConfigMap
A Kubernetes object that stores non-sensitive configuration data as key-value pairs, injected into pods as environment variables or files.
Vault
A tool by HashiCorp for securely managing secrets, encryption keys, and certificates with dynamic secret generation.
Feature Flag
A technique that allows enabling or disabling features in production without deploying new code, enabling safe rollouts and A/B testing.
Log Aggregation
The process of collecting, centralizing, and indexing log data from multiple sources for unified search and analysis.
Message Queue
A communication mechanism that enables asynchronous message passing between services, decoupling producers from consumers.
Microservices
An architectural style where an application is composed of small, independent services that communicate over APIs.
 View All DevOps Terms →