# policy controller

Published articles for policy controller.

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## From intent to enforcement: Lessons from operating Kubernetes controllers at scale

DevFeed: [From intent to enforcement: Lessons from operating Kubernetes controllers at scale](<https://devfeed.tech/articles/from-intent-to-enforcement-lessons-from-operating-kubernetes-controllers-at-scale-17627.md>)

Original publisher: [Read original article](<https://thenewstack.io/kubernetes-controllers-at-scale/>)

Author: Sri Saran Balaji Vellore Rajakumar

Published: 2026-07-17T12:00:00Z

Content type: article

Language: en

Sources: [Kubernetes Overview, News and Trends | The New Stack](<https://devfeed.tech/sources/kubernetes-overview-news-and-trends-the-new-stack.md>)

Topics: [Kubernetes](<https://devfeed.tech/topics/kubernetes.md>), [Amazon Elastic Kubernetes Service](<https://devfeed.tech/topics/amazon-elastic-kubernetes-service.md>), [VPC](<https://devfeed.tech/topics/vpc.md>)

Tags: [amazon-eks](<https://devfeed.tech/tags/amazon-eks.md>), [aws-marketplace](<https://devfeed.tech/tags/aws-marketplace.md>), [clusters](<https://devfeed.tech/tags/clusters.md>), [controllers](<https://devfeed.tech/tags/controllers.md>), [declarative](<https://devfeed.tech/tags/declarative.md>), [kubernetes](<https://devfeed.tech/tags/kubernetes.md>), [networking](<https://devfeed.tech/tags/networking.md>), [platform-engineering](<https://devfeed.tech/tags/platform-engineering.md>), [policy-controller](<https://devfeed.tech/tags/policy-controller.md>), [post-contributed](<https://devfeed.tech/tags/post-contributed.md>), [reconciliation](<https://devfeed.tech/tags/reconciliation.md>), [scale](<https://devfeed.tech/tags/scale.md>), [security](<https://devfeed.tech/tags/security.md>), [sponsor-aws-marketplace](<https://devfeed.tech/tags/sponsor-aws-marketplace.md>), [sponsored-post-contributed](<https://devfeed.tech/tags/sponsored-post-contributed.md>), [vpc](<https://devfeed.tech/tags/vpc.md>)

### AI overview

This article explains lessons from operating Kubernetes controllers at scale in Amazon EKS. It focuses on how the Network Policy Controller and VPC Resource Controller reconcile declared intent with changing cluster state to enforce network traffic and AWS resource access policies.

### Source excerpt

Kubernetes controllers are what make the platform's declarative model real. They observe the state, reconcile toward the intent, and keep The post From intent to enforcement: Lessons from operating Kubernetes controllers at scale appeared first on The New Stack.

## Five Challenges of Verifying Container Signatures at Deployment Time in Kubernetes

DevFeed: [Five Challenges of Verifying Container Signatures at Deployment Time in Kubernetes](<https://devfeed.tech/articles/so-you-want-to-check-image-signatures-in-kubernetes-13235.md>)

Original publisher: [Read original article](<https://www.chainguard.dev/unchained/so-you-want-to-check-image-signatures-in-kubernetes>)

Published: 2023-07-06T00:00:00Z

Content type: tutorial

Language: en

Sources: [Chainguard: Unchained](<https://devfeed.tech/sources/chainguard-unchained.md>)

Topics: [Kubernetes](<https://devfeed.tech/topics/kubernetes.md>), [Containers](<https://devfeed.tech/topics/containers.md>), [Security](<https://devfeed.tech/topics/security.md>), [Deployment](<https://devfeed.tech/topics/deployment.md>)

Tags: [admission-controller](<https://devfeed.tech/tags/admission-controller.md>), [container](<https://devfeed.tech/tags/container.md>), [container-image](<https://devfeed.tech/tags/container-image.md>), [deployment](<https://devfeed.tech/tags/deployment.md>), [kubernetes](<https://devfeed.tech/tags/kubernetes.md>), [policy-controller](<https://devfeed.tech/tags/policy-controller.md>), [security](<https://devfeed.tech/tags/security.md>), [security-policy-platform](<https://devfeed.tech/tags/security-policy-platform.md>), [signing](<https://devfeed.tech/tags/signing.md>), [signing-containers](<https://devfeed.tech/tags/signing-containers.md>), [sigstore](<https://devfeed.tech/tags/sigstore.md>), [sigstore-policy-controller](<https://devfeed.tech/tags/sigstore-policy-controller.md>), [software-signatures](<https://devfeed.tech/tags/software-signatures.md>), [software-supply-chain](<https://devfeed.tech/tags/software-supply-chain.md>), [webhooks](<https://devfeed.tech/tags/webhooks.md>)

### AI overview

This article explains five challenges involved in verifying container signatures during Kubernetes deployment. It focuses on admission webhooks, locating containers across resource types, handling ephemeral containers and custom resource definitions, and maintaining logic as Kubernetes APIs change.

### Source excerpt

Learn about five challenges you might encounter when trying to verify container signatures at deployment time in Kubernetes.