Tests for Scylla Clusters
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Skill Claude CodeCodex
Guides AI-assisted code review of SCT pull requests. Use when reviewing a PR, checking a diff for correctness, evaluating method signature changes across class hierarchies, verifying override compatibility, checking import conventions, error handling patterns, backend impact, test coverage, or provision label…
Skill Claude CodeCodex
Generate weekly commit summary reports for SCT repository. Use when asked to create a commit summary, weekly report, changelog, or "last week in SCT" issue. Applies to summarizing git commits from scylla-cluster-tests master branch for developer audiences. Covers running sctcommitssummary.py, filtering commits by…
Skill Claude CodeCodex
Guides the design and structuring of AI agent skills for the SCT repository with multi-step phases, progressive disclosure, and dual-platform compatibility (GitHub Copilot and Claude Code). Use when creating new skills, reviewing existing skills, restructuring AI guidance into modular skill directories, editing…
Skill Claude Code
Fix inline merge conflict markers in backport PRs by resolving conflicts and recommitting cleanly with original metadata preserved. Use when a backport PR has unresolved conflict markers, a cherry-pick produced merge conflicts, or a PR has the 'conflicts' label and needs to be made ready for review. Supports bulk mode…
Skill Claude CodeCodex
Guides labeling and linting test-case YAML files in SCT with testmetadata sections. Use when bulk-adding testmetadata to multiple test cases, running lint-test-docs to find coverage gaps, or auditing label accuracy across a directory. Triggers: "label pipelines", "add metadata to test cases", "bulk document tests"…
Skill Claude CodeCodex
Migrate SCT test configs and pipeline jobs from literal instancetype params to constraint-based sizingdb/sizingloader/sizingmonitor. Use when converting instancetypedb, gceinstancetypedb, azureinstancetypedb, instancetypeloader, instancetypemonitor to sizing constraints. Covers identifying instance specs, choosing…
Skill Claude CodeCodex
Guides writing remote package installation commands (apt-get, yum, dnf, zypper) in SCT code. Use when adding apt-get install/update, yum install, dnf install, or zypper install calls via remoter.run/remoter.sudo. Ensures timeouts, retries, and non-interactive flags are always present to prevent hangs in CI.
Skill Claude CodeCodex
Generate Gmail-compatible HTML performance weekly status reports from Argus CLI data. Use when asked to produce a weekly perf summary, create a performance status email, aggregate latency and throughput results across enterprise perf tests, or generate an HTML report for stakeholders. Covers…
Skill Claude CodeCodex
Profile Python code in SCT to find CPU, memory, and concurrency bottlenecks using cProfile, scalene, memray, and py-spy. Use when a test or framework operation is unexpectedly slow, memory usage grows unbounded, you need to find which functions dominate CPU time, or you want to verify that an optimization actually…
Skill Claude CodeCodex
Guides reviewing and generating testmetadata sections for SCT test-case YAML files. Use when adding or auditing testmetadata to a test-case YAML, checking that description, tier, testtype, stresstools, nemesislabels, and features are accurate and complete. Triggers: "add testmetadata", "audit test YAML", "fill in…
Skill Claude Code
Manage stacked PRs in scylla-cluster-tests using the gh-stack CLI extension (GitHub's native stacked PR support, public preview since 2026-07-31). Use when asked to split a large change into a chain of small reviewable PRs, check stack status, add/push/sync/rebase/merge stack layers, or navigate between stack…
Skill Claude Code
Generate Confluence-compatible HTML comparison pages from multiple SCT test runs. Use when comparing performance or elasticity test results across runs with different parameters (instance types, configurations, versions). Covers fetching run metadata and latency results from Argus API and S3 logs, extracting…
Skill Claude CodeCodex
Guides writing and debugging integration tests for the SCT framework that interact with real external services. Use when creating tests requiring Docker, AWS, GCE, Azure, OCI, or Kubernetes backends. Covers service labeling, credential skip patterns, Docker Scylla fixtures, resource cleanup, and common pitfalls.
Skill Claude CodeCodex
Guides writing new nemesis (chaos engineering disruptions) for the SCT framework. Use when creating a new NemesisBaseClass subclass, adding disruption logic, setting nemesis flags, or configuring target node pools. Covers the sdcm/nemesis/ package structure, auto-discovery, flag filtering, CI configuration, and unit…
Skill Claude CodeCodex
Use when asked to generate an implementation plan, draft a plan, save a plan, or design a feature rollout for the SCT repository. Supports two formats: full 7-section plans for multi-phase work (1K+ LOC, tracked in MASTER.md) and lightweight mini-plans for single-PR changes (under 1K LOC, stored in…
Skill Claude CodeCodex
Guides writing and debugging unit tests for the SCT framework using pytest conventions. Use when creating new test files in unittests/, adding test cases, mocking external services, setting up fixtures, or reviewing test coverage. Covers network-blocking patterns, FakeRemoter, moto for AWS mocking, monkeypatch, and…
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