📖 ~1 min read
Table of contents
Symptom & Impact
Cloned VM starts without valid interface config, preventing remote access and provisioning completion.
Environment & Reproduction
Typically occurs when template retains stale cloud-init state and machine identity artifacts.
Root Cause Analysis
Cloud-init skips or misapplies network setup because cached instance data mismatches new environment metadata.
Quick Triage
Confirm cloud-init status, inspect data source detection, and validate rendered netplan output.
Step-by-Step Diagnosis
Review cloud-init logs, clear stale instance cache indicators, and test metadata endpoint accessibility.
Solution – Primary Fix
Clean cloud-init state in template, regenerate machine identity, and reboot with valid metadata source.
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Solution – Alternative Approaches
Disable cloud-init networking and apply static netplan profile through provisioning tools.
Verification & Acceptance Criteria
New clones receive intended IP configuration and complete first-boot automation reliably.
Rollback Plan
Revert template changes if datasource behavior differs across hypervisor environments.
Prevention & Hardening
Bake template cleanup scripts and validation checks into image pipeline before release.
Related Errors & Cross-Refs
Relate to netplan boot ignore and missing NIC driver issues with linked tutorial.
Related tutorial: View the step-by-step tutorial for Ubuntu 18.04 LTS.
View all Ubuntu 18.04 LTS tutorials on the Tutorials Hub →
Browse all common problems & solutions on the Tutorials Hub.
References & Further Reading
Consult cloud-init docs, Ubuntu VM templating guidance, and platform-specific metadata references.
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