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containerd 2.0 Migration: Config v3, Registry Mirrors and the Kubernetes 1.36 Deadline (2026 Guide)

October 28, 2026 by Daniel Hayes

containerd 2.0 migration – upgrading Kubernetes nodes from containerd 1.7 to 2.3 LTS with config version 3

containerd 2.0 migration guide for Kubernetes 1.36+: convert config.toml to v3, move mirrors to hosts.toml, find Schema 1 images and roll nodes safely.

Categories Virtualization Tags Container Runtime, containerd, DevOps, Kubelet, Kubernetes, Kubernetes 1.35, Linux, Migration Guide, Platform Engineering Leave a comment

Kubernetes cgroup v2 Migration: The Complete Guide for 1.35+ Clusters (2026)

October 27, 2026 by Daniel Hayes

Kubernetes cgroup v2 migration – checking cgroup2fs on every node before the kubelet 1.35 upgrade

Kubernetes cgroup v2 migration for 1.35+: kubelets won’t start on cgroup v1 nodes. Audit nodes, switch to the systemd driver and roll pools safely.

Categories Virtualization Tags Amazon EKS, cgroup v2, containerd, DevOps, Kubelet, Kubernetes, Kubernetes 1.35, Linux, Platform Engineering Leave a comment