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Registry Compatibility Quick Reference

Sprint: SPRINT_0127_001_0002_oci_registry_compatibility Module: Doctor

Quick reference for OCI registry compatibility with StellaOps. For detailed information, see Registry Diagnostic Checks.

Quick Compatibility Check

# Run all registry diagnostics
stella doctor --tag registry

# Check specific capability
stella doctor --check check.integration.oci.referrers

# Export detailed report
stella doctor --tag registry --format json --output registry-report.json

Supported Registries

Registry Referrers API Recommendation
ACR, ECR, GCR, Harbor 2.6+, Quay 3.12+, JFrog 7.x+, Zot Native Full support
GHCR, Docker Hub, registry:2 Fallback Supported with automatic fallback

Common Issues

Symptom Check Likely Cause Fix
"Invalid credentials" oci.credentials Wrong username/password Verify credentials, check expiry
"No pull permission" oci.pull Missing reader role Grant pull/read access
"No push permission" oci.push Missing writer role Grant push/write access
"Referrers API not supported" oci.referrers Old registry version Upgrade or use fallback
"Artifacts missing in bundle" oci.referrers Referrers not discovered Check registry compatibility

Registry-Specific Notes

GHCR (GitHub Container Registry)

  • Referrers API not implemented
  • StellaOps uses tag-based fallback automatically
  • No action required

Harbor

  • Requires version 2.6+ for native referrers API
  • Older versions work with fallback

Docker Hub

  • Rate limits may affect probes
  • Use authenticated requests for higher limits

Verification Commands

# Test registry connectivity
curl -I https://registry.example.com/v2/

# Test referrers API
curl -H "Accept: application/vnd.oci.image.index.v1+json" \
  "https://registry.example.com/v2/repo/referrers/sha256:..."

# Test with docker CLI
docker login registry.example.com
docker pull registry.example.com/repo:tag

See Also