DevOps Intermediate

What is Log Aggregation?

The process of collecting, centralizing, and indexing log data from multiple sources for unified search and analysis.

In distributed systems, logs are scattered across many servers and services. Log aggregation collects them into a central platform for searching, filtering, alerting, and visualization. This is essential for debugging and monitoring.

The ELK Stack (Elasticsearch, Logstash, Kibana) is the most popular open-source solution. Alternatives include Grafana Loki, Splunk, and Datadog Logs. Structured logging (JSON format) makes logs easier to query and analyze.

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Continuous Deployment

A practice where every code change that passes automated tests is automatically deployed to production.

An architectural style where an application is composed of small, independent services that communicate over APIs.

An open-source container orchestration platform that automates deploying, scaling, and managing containerized applications.

Continuous Integration and Continuous Deployment — automated practices for building, testing, and deploying code changes.

Immutable Deployment

A deployment strategy where new versions replace existing instances entirely rather than updating them in place.

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

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