Скачать или смотреть CKA 2025 | Question 9 | cri-dockerd

In this video, we go through CKA 2025 Question-9 — how to prepare a Linux system for Kubernetes when Docker is already installed, but needs to be configured using cri-dockerd for kubeadm.

You’ll learn step-by-step how to:
✅ Install cri-dockerd using a .deb package
✅ Enable and start the cri-docker service
✅ Configure all the required sysctl parameters
✅ Fix the common dpkg: cannot access archive error by downloading the right .deb file

🧠 What is CRI (Container Runtime Interface)?

CRI stands for Container Runtime Interface — it’s how Kubernetes talks to container runtimes like containerd, CRI-O, or Docker (via cri-dockerd).
Since Docker doesn’t directly implement the CRI standard, cri-dockerd acts as an adapter between Docker and Kubernetes, enabling Docker to be used as the runtime for kubeadm clusters.



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