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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A documented set of standardized procedures for handling routine operations and incident response in production systems.

A communication mechanism that enables asynchronous message passing between services, decoupling producers from consumers.

Containerization

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

Configuration Management

The practice of systematically managing and maintaining consistent server configurations across infrastructure.

Pipeline as Code

Defining CI/CD pipeline configurations as version-controlled code files rather than through UI-based pipeline builders.

Chaos Engineering

The discipline of deliberately introducing failures into a system to test its resilience and identify weaknesses before they cause outages.

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