majiayu000 Working with Provenance
Overview
Every Konflux build produces SLSA provenance attestations containing the complete build history: source repository, commit SHA, pipeline run URL, and build parameters. Use cosign download attestation with jq to extract this information and trace artifacts back to their origins.
When to Use
Use this skill when you need to:
- Find build logs for an image (missing SBOM, failed tasks, debugging)
- Trace an image back to its source commit (what changed, code review)
- Verify which repository and commit produced an artifact (security, compliance)
- Extract build parameters or pipeline information (reproduce builds, debug configuration)
Do NOT use for non-Konflux images (Docker Hub, upstream images without attestations).
Quick Reference
| Need | Command Pattern | Helper Script |
|---|---|---|
| Build log URL | cosign download attestation $IMAGE | jq '.payload | @base64d | fromjson | .predicate.buildConfig.tasks[0].invocation.environment.annotations."pipelinesascode.tekton.dev/log-url"' |
~/.claude/skills/working-with-provenance/scripts/build-log-link.sh $IMAGE |
| Commit link | cosign download attestation $IMAGE | jq '.payload | @base64d | fromjson | .predicate.buildConfig.tasks[0].invocation.environment.annotations | ."pipelinesascode.tekton.dev/repo-url" + "/commit/" + ."pipelinesascode.tekton.dev/sha"' |
~/.claude/skills/working-with-provenance/scripts/build-commit-link.sh $IMAGE |
| Git repository | cosign download attestation $IMAGE | jq '.payload | @base64d | fromjson | .predicate.buildConfig.tasks[0].invocation.environment.annotations."pipelinesascode.tekton.dev/repo-url"' |
~/.claude/skills/working-with-provenance/scripts/build-git-repo.sh $IMAGE |
| Origin pullspec | cosign download attestation $IMAGE | jq '.payload | @base64d | fromjson | .subject[0].name + ":" + .predicate.buildConfig.tasks[0].invocation.environment.annotations."pipelinesascode.tekton.dev/sha"' |
~/.claude/skills/working-with-provenance/scripts/build-origin-pullspec.sh $IMAGE |
Helper Scripts
This skill includes ready-to-use bash scripts that you can invoke directly:
# Extract build log URL
~/.claude/skills/working-with-provenance/scripts/build-log-link.sh quay.io/org/image:tag
# Extract commit URL (handles GitHub and GitLab)
~/.claude/skills/working-with-provenance/scripts/build-commit-link.sh quay.io/org/image:tag
# Extract git repository URL
~/.claude/skills/working-with-provenance/scripts/build-git-repo.sh quay.io/org/image:tag
# Extract original pullspec with commit SHA
~/.claude/skills/working-with-provenance/scripts/build-origin-pullspec.sh quay.io/org/image:tag
Common Workflow
Investigating missing SBOM:
# 1. Get build log URL from provenance
LOG_URL=$(~/.claude/skills/working-with-provenance/scripts/build-log-link.sh quay.io/org/image:tag)
# 2. Open logs in browser or use debugging-pipeline-failures skill
echo $LOG_URL
Tracing code changes:
# 1. Get commit link from provenance
COMMIT=$(~/.claude/skills/working-with-provenance/scripts/build-commit-link.sh quay.io/org/image:tag)
# 2. View the commit
echo $COMMIT # Opens in browser
# 3. Check recent history
git clone $(~/.claude/skills/working-with-provenance/scripts/build-git-repo.sh quay.io/org/image:tag)
Attestation Structure
Konflux provenance lives at:
.payload (base64-encoded)
└─ .predicate
├─ .buildConfig.tasks[0].invocation.environment.annotations
│ ├─ pipelinesascode.tekton.dev/log-url (pipeline logs)
│ ├─ pipelinesascode.tekton.dev/repo-url (git repository)
│ └─ pipelinesascode.tekton.dev/sha (commit SHA)
└─ .subject[0].name (image name)
Common Mistakes
| Mistake | Fix |
|---|---|
| Trying to parse image tags for commit info | Tags can be arbitrary. Use provenance for definitive source. |
| Manual UI navigation to find logs | Use build-log-link.sh - faster and scriptable. |
| Assuming images without Konflux builds have provenance | Only Konflux-built images have SLSA attestations via Tekton Chains. |
| Forgetting to base64 decode payload | Always use .payload | @base64d | fromjson pattern. |
Real-World Example
# User reports: "Build quay.io/redhat-user-workloads/konflux-ai-sig-tenant/llm-compressor-demo:7f9a553... missing SBOM"
# 1. Extract build log URL
$ ~/.claude/skills/working-with-provenance/scripts/build-log-link.sh quay.io/redhat-user-workloads/konflux-ai-sig-tenant/llm-compressor-demo:7f9a553dd100ba700fc8f9da942f8dfcecf6a1bd
https://konflux-ui.apps.kflux-prd-rh03.nnv1.p1.openshiftapps.com/ns/konflux-ai-sig-tenant/pipelinerun/llm-compressor-on-push-lvnc5
# 2. Extract source commit
$ ~/.claude/skills/working-with-provenance/scripts/build-commit-link.sh quay.io/redhat-user-workloads/konflux-ai-sig-tenant/llm-compressor-demo:7f9a553dd100ba700fc8f9da942f8dfcecf6a1bd
🐙 https://github.com/ralphbean/llm-compressor-hermetic-demo/commit/7f9a553dd100ba700fc8f9da942f8dfcecf6a1bd
# Now: Open logs to debug SBOM task, review commit for context
Keywords
SLSA provenance, attestation, cosign, Tekton Chains, build logs, commit SHA, source tracing, artifact metadata, supply chain security, SBOM debugging, pipeline logs, container image verification