ContentPosts from @kaptain..
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@kaptain shared a link, 1 week ago
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Eliminating Kubernetes Image Signature Replication

The Kubernetes image promoter no longer replicates container image signatures across regions. The rewrite drops that replication entirely, cuts latency, and simplifies the codebase, while keeping signature verification working seamlessly for end users. Next, the project is moving to OCI 1.1 referrer.. read more  

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@kaptain shared a link, 1 week ago
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Kubernetes' Default CoreDNS Configuration is insecure

CoreDNS pods insecure option is the default in Kubernetes as it allows for the creation of arbitrary DNS A records. Combined with wildcard SSL certs, it poses a security risk, highlighted by Cilium's handling of network policies in the face of DNS manipulation. Time to shift to a more secure DNS con.. read more  

Kubernetes' Default CoreDNS Configuration is insecure
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@kaptain shared a link, 1 week ago
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Breaking free of a single datacenter: Practical geo-distributed AI operations with the k0smos platforms

This post discusses the challenges of leveraging distributed resources for AI workloads and the role of Kubernetes in addressing these challenges. The k0smos stack is highlighted as a solution for operating geo-distributed AI infrastructure, divided into three technical layers: k0s, k0smotron, and k.. read more  

Breaking free of a single datacenter: Practical geo-distributed AI operations with the k0smos platforms
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@kaptain shared a link, 1 week ago
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From Dashboard to Headlamp: Understanding the Transition

The Kubernetes Dashboard project has been archived, with Headlamp now carrying the legacy forward by offering a visual interface with enhanced capabilities like multi-cluster visibility and application-centric views. Headlamp keeps familiar workflows, while expanding to support multi-cluster environ.. read more  

From Dashboard to Headlamp: Understanding the Transition
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@kaptain shared a link, 1 week ago
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Benchmarking KubeVirt performance with virtbench

Portworx released "virtbench," an open-source CLI that lets platform teams run reproducible KubeVirt benchmarks and assess VM readiness, rather than rely on pod health as a proxy... read more  

Benchmarking KubeVirt performance with virtbench
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@kaptain shared a link, 2 weeks, 3 days ago
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Buzzing Beyond Clouds: The Illustrated Children's Guide to Cilium

"Buzzing Beyond Clouds"continues the eBPF adventure with Obee as a Jedi bee, showcasing how Cilium powers networking, cluster mesh, observability, security, and service mesh in the Kubulous galaxy. Each chapter parallels Cilium's real-world functionalities, making complex concepts accessible to all .. read more  

Buzzing Beyond Clouds: The Illustrated Children's Guide to Cilium
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@kaptain shared a link, 2 weeks, 3 days ago
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The Case for VM and Container Consolidation in 2026

With KubeVirt, enterprise platform teams can run VMs and containers on Kubernetes, so separate VM and container platforms remain a choice teams keep through habit... read more  

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@kaptain shared a link, 2 weeks, 3 days ago
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Containers on fire: from container escapes to supply chain attacks

Kaspersky researchers explain how attackers use a compromised container to take over aKubernetescluster or host, with misconfigured APIs and permissions driving most escapes... read more  

Containers on fire: from container escapes to supply chain attacks
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@kaptain shared a link, 2 weeks, 3 days ago
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Runtime Observability and Enforcement for Opaque AI Agents with eBPF: Beyond Sandboxes and Approvals

Platform teams should verify side effects at the OS layer, separate from tool approvals and sandbox rules, because engineers cannot treat AI agent harnesses as security boundaries... read more  

Runtime Observability and Enforcement for Opaque AI Agents with eBPF: Beyond Sandboxes and Approvals
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@kaptain shared a link, 2 weeks, 3 days ago
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Fixing Ghost Drops: How eBPF Rescued IPv6 Telemetry

In this walkthrough, you use eBPF to patch malformed flow-export packets before the host network stack drops them... read more  

Fixing Ghost Drops: How eBPF Rescued IPv6 Telemetry