What is Helm? A Clear Guide

Helm is the package manager for Kubernetes that bundles resources into reusable charts. Learn how Helm works, key concepts, and when your team needs it.

The EaseCloud Team

16 Jul 2026 • 2 min read

Helm is the package manager for Kubernetes. It bundles related Kubernetes resource definitions into versioned, reusable packages called charts that simplify application deployment and management. Helm is a CNCF graduated project used by the majority of Kubernetes-adopting organizations to standardize and automate deployments.

Why Helm Matters

Deploying applications on Kubernetes typically requires writing and maintaining multiple YAML manifests - Deployments, Services, ConfigMaps, Secrets, Ingress rules, and more. For a single application, this can mean 10-20 separate files that need to stay in sync across environments. Helm solves this by packaging all manifests into a single chart with configurable values. According to the CNCF 2024 survey, Helm is used by over 70% of organizations running Kubernetes, making it the most adopted Kubernetes tooling outside of kubectl itself.

How Helm Works

Helm operates as a client-side tool that renders Kubernetes manifests from templates and applies them to a cluster.

Chart Structure: A Helm chart is a directory containing template files, a default values file, and metadata. Templates use Go templating syntax with placeholders that are filled from values at install time.
Values and Overrides: Each chart has a values.yaml file with default configuration. Users override specific values per environment - different replica counts for staging and production, different resource limits, different image tags.
Release Management: When you install a chart, Helm creates a release - a versioned instance of that chart running in the cluster. Helm tracks release history, enabling instant rollbacks to any previous version.
Dependency Resolution: Charts can declare dependencies on other charts. Helm downloads and installs dependencies automatically, so complex applications with multiple components deploy as a single unit.

Key Concepts

Chart: A package of pre-configured Kubernetes resources. Charts can be stored in repositories (like Artifact Hub, which hosts over 10,000 public charts) or maintained privately within an organization.
Release: A specific installation of a chart in a Kubernetes cluster. The same chart can be installed multiple times with different configurations, each tracked as a separate release.
Repository: A server hosting packaged charts. Organizations typically run private chart repositories (using tools like ChartMuseum or OCI-compatible registries) alongside public ones.
Values File: A YAML file containing configuration parameters for a chart. Teams maintain separate values files per environment, enabling consistent deployments with environment-specific settings.
Hooks: Lifecycle events that let you run jobs at specific points during installation, upgrade, or deletion - useful for database migrations, cache warming, or cleanup tasks.

When You Need Helm

Deploying the same application across multiple environments: When you run staging, production, and disaster recovery clusters with different configurations but the same application structure.
Managing complex Kubernetes deployments: When a single application requires 10+ Kubernetes manifests that need to be versioned, tested, and deployed together as a unit.
Standardizing deployments across teams: When multiple teams deploy to Kubernetes and you need consistent patterns for resource limits, health checks, security policies, and monitoring configuration.
Requiring reliable rollbacks: When you need the ability to instantly revert to a previous deployment version with full history tracking - critical for European organizations operating under strict change management requirements.
Using third-party software on Kubernetes: When installing databases, monitoring stacks, or other infrastructure tools that provide official Helm charts, reducing setup from hours to minutes.