🟠 High   ⏱ 5–30 min  Last verified: 19 May 2026
Affected versions: RHEL 10.0 RHEL 10.1

📖 ~1 min read

Table of contents
  1. Problem Summary
  2. Symptoms
  3. Diagnostics
  4. Root Cause
  5. Primary Fix
  6. Verification
  7. Prevention
  8. Rollback
  9. Automation
  10. Command Reference
  11. Escalation
  12. Related Notes

Problem Summary

podman pull from private registry fails with x509 errors.

Symptoms

Error says certificate signed by unknown authority.

Diagnostics

Inspect /etc/containers/registries.conf and trust stores.

Root Cause

Registry CA chain not installed on host.

Primary Fix

Place CA in /etc/pki/ca-trust/source/anchors and run update-ca-trust.

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Illustrative mockup for rhel-10 — rhel10-b02-p33-1
Illustrative mockup — Progressive Robot — Illustrative mockup — Progressive Robot

Verification

Repeat podman pull and confirm digest is downloaded.

Illustrative mockup for rhel-10 — rhel10-b02-p33-2
Illustrative mockup — Progressive Robot — Illustrative mockup — Progressive Robot

Prevention

Distribute CA bundle during provisioning.

Rollback

Remove invalid CA file and restore previous trust bundle.

Automation

Manage trust anchors via Ansible copy and command modules.

Command Reference

update-ca-trust; podman login; podman pull

Escalation

Provide registry cert chain and openssl s_client output.

Avoid insecure registries unless in isolated lab networks.

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.

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