DevOps Intermediate

What is Monitoring?

The practice of collecting, analyzing, and alerting on system metrics and logs to ensure application health and performance.

Monitoring provides visibility into system behavior. Metrics monitoring tracks CPU, memory, disk, and network usage. Application monitoring tracks response times, error rates, and throughput. Log monitoring aggregates and searches through application logs.

Popular tools include Prometheus + Grafana (metrics), ELK Stack (logs), Datadog (full-stack), and PagerDuty (alerting). The three pillars of observability are metrics, logs, and traces.

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Related Terms

A human-readable data serialization language commonly used for configuration files in DevOps tools and applications.

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

Containerization

A lightweight virtualization method that packages applications with their dependencies into isolated, portable containers.

A tool for creating identical machine images for multiple platforms from a single configuration file.

A declarative GitOps continuous delivery tool for Kubernetes that automatically syncs cluster state with Git repositories.

Trunk-Based Development

A source control strategy where developers integrate small changes directly into the main branch frequently, often multiple times per day.

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