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TL;DR - Kustomize
- Kustomize is a Kubernetes configuration management tool for customizing deployments
- It patches and overlays YAML manifests without templating languages
- Completely free and open-source, built into kubectl
Pricing: Free forever
Best for: Individuals & startups
Score: 84/100
Pros & Cons
Pros
- K8s native config
- No templating needed
- Built into kubectl
- Good for overlays
- Active development
Cons
- Learning curve
- Less flexible than Helm
- Complex patches
- Documentation gaps
- Limited ecosystem
Key Features
Kubernetes configPatchingOverlaysNo templatesNative kubectlOpen source
Pricing Plans
Free
Free
- Kubernetes config management
- Template-free customization
- Overlay system
- Built into kubectl
- Apache-2.0 license
- Open source
About Kustomize
By Toolradar Team·
Kustomize customizes Kubernetes resources without templates. Patch and overlay configurations—manage deployments across environments without copy-paste.
The patching model is clean. The integration with kubectl is native. The approach is declarative.
Kubernetes users managing multiple environments use Kustomize for configuration customization.
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Kustomize FAQ
Is Kustomize free?
Yes, Kustomize is free and open source. It's actually built into kubectl now - you can use 'kubectl apply -k' directly.
What is Kustomize?
Kustomize lets you customize Kubernetes configurations without templates. You write patches that modify base configurations, keeping things declarative and readable.
Kustomize vs Helm?
Kustomize uses patching; Helm uses templating. Kustomize is simpler and built into kubectl. They're often used together - Helm for packages, Kustomize for environment-specific tweaks.
Source: kustomize.io