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apiVersion: devrunbook.io/v1alpha1
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kind: Playbook
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metadata:
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id: release-operations.health-readiness
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slug: health-readiness
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version: 1.0.0
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title: Implement Health and Readiness Checks
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summary: Add accurate liveness, readiness and dependency health without hiding partial outages.
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category: release-operations
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tags:
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- healthcheck
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- operations
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- reliability
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lifecycle: reviewed
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riskTier: moderate
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authors:
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- name: DevRunbook Core Team
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license: MIT
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package:
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files:
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- path: prompt.md
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role: template
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digest: true
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exportByDefault: false
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- path: README.md
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role: documentation
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digest: true
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exportByDefault: false
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- path: CHANGELOG.md
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role: changelog
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digest: true
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exportByDefault: false
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- path: examples/minimal.yaml
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role: example
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digest: true
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exportByDefault: false
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- path: evaluations/static-structure.yaml
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role: evaluation
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digest: true
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exportByDefault: false
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spec:
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type: guided
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intent:
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problem: Development work around implement health and readiness checks is often underspecified, inconsistently executed
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or reported without enough evidence.
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outcome: Add accurate liveness, readiness and dependency health without hiding partial outages.
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whenToUse:
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- Use this playbook when the repository needs a bounded implement health and readiness checks task with explicit evidence
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and completion criteria.
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- Use it when Codex should follow a repeatable workflow rather than improvise from a one-line request.
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whenNotToUse:
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- Do not use it when the desired outcome or authority boundaries are still materially undecided.
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- Do not use it to access unavailable production credentials, bypass safeguards or claim validation that cannot be performed.
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modes:
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- guided
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- execute
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- recovery
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defaultMode: execute
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autonomy:
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min: implement
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max: repair
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default: verify
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inputs:
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- key: requiredDependencies
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label: Required dependencies
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description: List dependencies that determine readiness and their failure semantics.
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type: string-list
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required: true
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sensitive: false
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includeInOutput: true
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- key: degradedComponents
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label: Degraded components
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description: List optional components that may fail without making the whole service unready.
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type: string-list
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required: false
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sensitive: false
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includeInOutput: true
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default: []
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compatibility:
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repositoryRequired: true
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languages: []
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frameworks: []
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packageManagers: []
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databases: []
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deploymentTypes: []
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requiredProfileCapabilities: []
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incompatibleConditions: []
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guardrails:
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- id: guardrail-1
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severity: blocking
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text: Keep liveness independent from optional downstream availability.
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- id: guardrail-2
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severity: blocking
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text: Do not expose secrets, topology details or raw dependency errors in public health responses.
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- id: guardrail-3
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severity: blocking
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text: Avoid health checks that create load or mutate external systems.
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workflow:
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- id: classify-dependencies
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title: Classify dependencies
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instruction: Separate process health, required readiness dependencies and optional degraded components.
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required: true
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- id: define-contract
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title: Define endpoint contract
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instruction: Specify status codes, response shape, timeouts, caching and authentication/exposure.
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required: true
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- id: implement-checks
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title: Implement checks
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instruction: Add bounded checks and aggregate them with clear required/degraded semantics.
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required: true
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- id: integrate-runtime
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title: Integrate runtime
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instruction: Configure container healthchecks and startup/shutdown behavior.
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required: true
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- id: add-observability
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title: Add observability
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instruction: Emit safe structured logs and metrics for state transitions.
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required: true
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- id: test-failures
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title: Test failure matrix
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instruction: Simulate required and optional dependency failures and recovery.
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required: true
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- id: document
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title: Document operations
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instruction: Explain how orchestrators and operators should use each endpoint.
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required: true
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validation:
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commandRoles:
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- lint
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- typecheck
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- unit-test
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- integration-test
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- build
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- smoke-test
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checks:
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- id: check-1
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type: assertion
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description: Required dependency failure changes readiness without killing liveness.
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blocking: true
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evidence: Referenced files, command results or explicit review notes.
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- id: check-2
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type: assertion
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description: Optional component failure is visible as degraded according to policy.
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blocking: true
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evidence: Referenced files, command results or explicit review notes.
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- id: command-lint
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type: command
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description: Run the resolved lint command when the repository profile provides it and record the result.
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blocking: true
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evidence: Resolved command, exit status and concise result summary.
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- id: command-typecheck
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type: command
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description: Run the resolved typecheck command when the repository profile provides it and record the result.
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blocking: true
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evidence: Resolved command, exit status and concise result summary.
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- id: command-unit-test
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type: command
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description: Run the resolved unit-test command when the repository profile provides it and record the result.
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blocking: true
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evidence: Resolved command, exit status and concise result summary.
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- id: command-integration-test
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type: command
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description: Run the resolved integration-test command when the repository profile provides it and record the result.
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blocking: true
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evidence: Resolved command, exit status and concise result summary.
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- id: command-build
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type: command
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description: Run the resolved build command when the repository profile provides it and record the result.
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blocking: true
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evidence: Resolved command, exit status and concise result summary.
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- id: command-smoke-test
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type: command
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description: Run the resolved smoke-test command when the repository profile provides it and record the result.
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blocking: true
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evidence: Resolved command, exit status and concise result summary.
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completion:
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criteria:
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- Orchestrator behavior matches documented semantics.
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- Optional integration outages do not misreport total failure.
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- Validation evidence and unresolved limitations are reported honestly.
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failurePolicy:
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onValidationFailure: Investigate failures caused by the current work, repair them when they remain within scope, rerun
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affected validation and report any genuine blocker without claiming success.
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onAmbiguity: Use repository evidence and existing conventions for minor reversible choices. Preserve current behavior
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and stop before any material irreversible decision that the specification does not resolve.
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onMissingContext: Inspect the repository for missing non-sensitive context. Never invent commands, credentials, production
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behavior or validation results; report what remains unavailable.
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onOutOfScopeCause: Explain the evidenced out-of-scope cause, avoid unrelated changes and provide the smallest safe follow-up
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recommendation.
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onExternalDependencyUnavailable: Use an approved local substitute or fixture only when it preserves the behavior under
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test. Otherwise record the blocked validation and do not claim the external path succeeded.
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onUnableToReproduce: Record attempted reproduction, environment and observed evidence. Do not apply speculative production
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changes; provide the narrowest next diagnostic action.
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reporting:
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sections:
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- id: outcome
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title: Outcome
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required: true
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description: State the delivered result or audit conclusion without overstating evidence.
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- id: evidence
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title: Evidence and scope
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required: true
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description: List inspected or changed areas and the evidence supporting the result.
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- id: validation
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title: Validation
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required: true
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description: Report commands, manual checks and their actual outcomes.
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- id: risks
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title: Risks and limitations
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required: true
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description: State residual risk, inaccessible evidence and untested conditions.
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- id: follow-up
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title: Recommended follow-up
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required: true
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description: List the smallest useful next actions or state None.
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template:
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main: prompt.md
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partials: []
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exports:
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prompt: true
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markdown: true
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runPack: false
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agentsSuggestion: false
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quality:
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reviewStatus: editorial-reviewed
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testedStacks: []
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knownLimitations:
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- Repository-specific effectiveness depends on the accuracy of the selected profile and the evidence available to Codex.
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evaluationCaseIds:
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- health-readiness.static-structure
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