🟠 High   ⏱ 5–30 min  Last verified: 20 May 2026
Affected versions: RHEL 10.0 RHEL 10.1

📖 ~1 min read

Table of contents
  1. Symptom & Impact
  2. Environment & Reproduction
  3. Root Cause Analysis
  4. Quick Triage
  5. Step-by-Step Diagnosis
  6. Solution – Primary Fix
  7. Solution – Alternative Approaches
  8. Verification & Acceptance Criteria
  9. Rollback Plan
  10. Prevention & Hardening
  11. Related Errors & Cross-Refs
  12. References & Further Reading

Symptom & Impact

Automated network changes fail and revert, delaying provisioning tasks.

Environment & Reproduction

Seen with invalid YAML or unsupported NIC properties.

nmstatectl show
nmstatectl apply /tmp/state.yaml

Root Cause Analysis

Desired state conflicts with device capabilities or existing connection constraints.

Quick Triage

Validate syntax and inspect generated NetworkManager profiles.

nmstatectl gc /tmp/state.yaml
nmcli connection show

Step-by-Step Diagnosis

Review nmstate and NetworkManager logs for transaction error details.

journalctl -u NetworkManager -n 200 --no-pager
journalctl -t nmstate -n 120 --no-pager
Illustrative mockup for rhel-10 — nmstate_apply_error
nmstate transaction rollback — Illustrative mockup — Progressive Robot

Solution – Primary Fix

Fix invalid attributes and apply in checkpoint mode first.

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nmstatectl apply --checkpoint-timeout 120 /tmp/state.yaml
nmstatectl show
Illustrative mockup for rhel-10 — nmstate_apply_success
Desired state applied — Illustrative mockup — Progressive Robot

Solution – Alternative Approaches

Apply incremental interface changes with nmcli when full-state apply is risky.

nmcli connection modify  ipv4.addresses 10.0.10.20/24

Verification & Acceptance Criteria

Desired interface, IP, and route state remains stable post-apply.

ip -br addr
ip route

Rollback Plan

Reapply known-good state file if connectivity regresses.

nmstatectl apply /root/known-good.yaml

Prevention & Hardening

Use staged validation in CI before production network changes.

nmstatectl gc /root/planned.yaml
nmstatectl show

verification failed, rollback triggered, unsupported interface setting.

Related tutorial: View the step-by-step tutorial for rhel-10.

View all rhel-10 tutorials on the Tutorials Hub →

Browse all common problems & solutions on the Tutorials Hub.

References & Further Reading

nmstate and NetworkManager integration guidance.

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