MagTape
A Kubernetes admission controller for mutating and validating.
Overview
MagTape is an open-source Kubernetes admission controller developed by T-Mobile. It functions as both a validating and mutating webhook. Its primary mechanism is to act on annotations present on namespaces. When a resource is created in a namespace, MagTape checks the namespace's annotations to determine which policies to apply, allowing for flexible, per-namespace policy enforcement.
✨ Key Features
- Validating and Mutating admission controller
- Policy enforcement driven by namespace annotations
- Injects environment variables and volumes
- Validates pod security settings and image registries
- Extensible with custom policies
🎯 Key Differentiators
- Unique annotation-based approach for triggering policies
- Strong focus on mutation for standardizing pod configurations
- Simpler than general-purpose policy engines
Unique Value: Provides a flexible, namespace-centric way to validate and mutate Kubernetes resources using simple annotations.
🎯 Use Cases (3)
✅ Best For
- Mutating pods to add standard configurations based on namespace
💡 Check With Vendor
Verify these considerations match your specific requirements:
- Complex, cluster-wide policies that are not tied to namespaces
🏆 Alternatives
Offers a different policy attachment model (via annotations) compared to the CRD-based approaches of Kyverno and Gatekeeper, which may be more intuitive for certain use cases.
💻 Platforms
🔌 Integrations
💰 Pricing
Free tier: Fully open source and free.
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