🔥 Kubernetes VPA InPlace Mode Explained | How CPU Updates Without Restart? (Deep Internals + Demo)

In this video, we dive deep into Kubernetes VPA InPlace Mode and understand how Kubernetes can update CPU resources without restarting a Pod.

Most people know that changing CPU limits usually recreates the Pod. But with VPA InPlace mode, Kubernetes can update resources dynamically.

In this video, you will learn the full internal workflow behind this feature.

Topics covered in this video:

• What is Kubernetes Vertical Pod Autoscaler (VPA)
• Why InPlace mode exists
• Difference between Initial, Recreate, and InPlaceOrRecreate modes
• How Kubernetes updates CPU without restarting the Pod
• Complete internal architecture
• Role of Kubelet
• Container Runtime Interface (CRI)
• containerd and runc
• How cgroups control CPU
• How kubelet updates container resources internally
• Step-by-step backend flow
• Live Minikube demo
• Inspecting cgroups in Linux

We also explore the internal path:

Kubernetes Control Plane
→ Kubelet
→ CRI
→ Container Runtime (containerd)
→ OCI runtime (runc)
→ Linux Kernel (cgroups)

By the end of this video, you will clearly understand how Kubernetes updates CPU resources at the kernel level without restarting containers.

This is a must-watch for DevOps engineers, Kubernetes administrators, and anyone preparing for CKA or Kubernetes interviews.

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Видео 🔥 Kubernetes VPA InPlace Mode Explained | How CPU Updates Without Restart? (Deep Internals + Demo) канала DevOpsIn