📖 ~1 min read
Table of contents
Symptom & Impact
Container runtime fails to start and orchestrated workloads cannot launch.
Environment & Reproduction
Debian 11 hosts run Docker with cgroup driver settings mismatched to systemd.
Root Cause Analysis
Runtime and host init system disagree on cgroup management mode.
Quick Triage
Collect daemon startup logs and compare configured cgroup driver values.
Step-by-Step Diagnosis
Inspect runtime config files and kernel cgroup availability to confirm mismatch.
Solution – Primary Fix
Set consistent cgroup driver configuration and restart runtime with validated settings.
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Solution – Alternative Approaches
Pin compatible runtime versions while planning full host cgroup migration.
Verification & Acceptance Criteria
Daemon starts cleanly and test containers run and stop without errors.
Rollback Plan
Revert daemon config and package versions if runtime behavior regresses.
Prevention & Hardening
Standardize runtime baseline and validate cgroup mode during node provisioning.
Related Errors & Cross-Refs
Related failures include kubelet startup errors and containerd socket timeouts.
Related tutorial: View the step-by-step tutorial for debian-11.
View all debian-11 tutorials on the Tutorials Hub →
Browse all common problems & solutions on the Tutorials Hub.
References & Further Reading
Docker and Debian cgroup integration documentation and migration notes.
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