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Efficient Ops
Efficient Ops
Oct 18, 2023 · Cloud Native

Why Does Containerd’s PLEG Relisting Stall at Node Startup and How to Fix It

When replacing dockershim with containerd, we observed that pods take over a minute to start because the GenericPLEG Relisting operation stalls for more than 30 seconds during node boot, caused by containerd’s UpdateContainerResources holding a bbolt lock and intensive image pulls; the article explains the root cause and provides a fix using the overlay volatile mount option.

PLEGTroubleshootingcontainer runtime
0 likes · 16 min read
Why Does Containerd’s PLEG Relisting Stall at Node Startup and How to Fix It
WeiLi Technology Team
WeiLi Technology Team
Aug 31, 2023 · Operations

Why Did My Kubernetes Node Stay NotReady? OOM Killer, PLEG, and Fixes

A high‑load Kubernetes node entered NotReady due to repeated OOM‑killer activity, daemonset restarts, and PLEG health failures, and the article walks through diagnosis, log analysis, root‑cause explanation, and practical remediation steps to restore node readiness.

PLEGTroubleshootingkubelet
0 likes · 9 min read
Why Did My Kubernetes Node Stay NotReady? OOM Killer, PLEG, and Fixes
Ops Development Stories
Ops Development Stories
Sep 28, 2021 · Cloud Native

Why Does PLEG ‘Not Healthy’ Make a Kubernetes Node NotReady?

This article explains the role of the Pod Lifecycle Event Generator (PLEG) in Kubelet, why the “PLEG is not healthy” error causes nodes to become NotReady, common failure scenarios, and a step‑by‑step troubleshooting method that ultimately resolves the issue by upgrading systemd.

NodeNotReadyPLEGTroubleshooting
0 likes · 11 min read
Why Does PLEG ‘Not Healthy’ Make a Kubernetes Node NotReady?