DevOps Advanced

What is Helm?

A package manager for Kubernetes that simplifies deploying and managing applications using reusable, configurable charts.

Helm packages Kubernetes resources into charts — reusable bundles of YAML templates with configurable values. Instead of managing dozens of Kubernetes manifests, you install a chart with helm install and customize via values.yaml.

Helm supports versioned releases, upgrades, rollbacks, and dependency management. Chart repositories share community and enterprise charts. Popular charts exist for databases, monitoring stacks, and web applications.

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

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A Kubernetes object that stores non-sensitive configuration data as key-value pairs, injected into pods as environment variables or files.

A high-performance web server and reverse proxy known for its stability, low resource usage, and ability to handle many concurrent connections.

SRE (Site Reliability Engineering)

An engineering discipline that applies software engineering principles to infrastructure and operations to create reliable systems.

A structured analysis conducted after an incident to understand what happened, why, and how to prevent recurrence — without assigning blame.

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