Rhcos Artifacts

RHCOS Artifacts

Build artifacts, package comparison commands, and coreos-assembler version tracking.

Related: rhcos-build-pipeline, pipeline-failures

Build Artifacts

Common artifacts available from builds:

Artifact Commands

# List build artifacts
coreos-tools jenkins builds artifacts <job-name> <build-number>

# Download a specific artifact
coreos-tools jenkins builds artifacts <job-name> <build-number> --download <artifact-name>

# Download to specific path
coreos-tools jenkins builds artifacts <job-name> <build-number> --download <artifact-name> -o /tmp/output.json

Package Comparison

Single Build Diff

Shows what packages changed/upgraded in this build:

coreos-tools jenkins builds diff <job-name> <build-number>

Two Build Comparison

Compare packages between two builds:

coreos-tools jenkins builds diff <job-name> <build1> <build2>

Output format:

{
  "build1": 3399,
  "build2": 3463,
  "stream": "rhel-9.6",
  "added": ["new-package-1.0.0.x86_64 (rhel-9.6-baseos)"],
  "removed": ["old-package-2.0.0.x86_64 (rhel-9.4-appstream)"],
  "changed": [
    {
      "name": "kernel",
      "build1": "kernel-5.14.0-427.112.1.el9_4.x86_64 (rhel-9.4-server-ose-4.17)",
      "build2": "kernel-5.14.0-570.94.1.el9_6.x86_64 (rhel-9.6-early-kernel)"
    }
  ]
}

Analyzing Diffs

# List all changed package names
coreos-tools jenkins builds diff <job-name> <b1> <b2> | jq -r '.changed[].name'

# Show kernel changes specifically
coreos-tools jenkins builds diff <job-name> <b1> <b2> | jq '.changed[] | select(.name == "kernel")'

# Count changes
coreos-tools jenkins builds diff <job-name> <b1> <b2> | jq '{added: (.added | length), removed: (.removed | length), changed: (.changed | length)}'

Comparing coreos-assembler Versions

When cosa version differs between good and bad builds:

# Download cosa git info from both builds
coreos-tools jenkins builds artifacts <job-name> <failed-build> --download coreos-assembler-git.json -o /tmp/failed-cosa.json
coreos-tools jenkins builds artifacts <job-name> <good-build> --download coreos-assembler-git.json -o /tmp/good-cosa.json

# Compare
diff /tmp/good-cosa.json /tmp/failed-cosa.json

# Find commits between versions using GitHub CLI
gh api repos/coreos/coreos-assembler/compare/<old-commit>...<new-commit> \
  --jq '.commits[] | {sha: .sha[0:7], date: .commit.author.date, message: .commit.message | split("\n")[0]}'

# Get details of a specific commit
gh api repos/coreos/coreos-assembler/commits/<commit-sha> \
  --jq '{sha: .sha, author: .commit.author.name, message: .commit.message}'