OSAC-1604: Design - Granular Cluster Status Reporting - #227
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Add the backend design EP for granular CaaS cluster status reporting alongside the merged PRD. The design fixes the osac-operator feedback controller condition collapse, adds two orthogonal condition types (CONTROL_PLANE_AVAILABLE, WORKERS_READY) plus a PROGRESSING reason vocabulary, extends ClusterNodeSet with replica counts and per-set state, and renders it all through the CLI. Scope is backend only (proto, operator, CLI, events); UI is owned by osac-ux. EP: https://redhat.atlassian.net/browse/OSAC-1604 Assisted-by: Claude Code <noreply@anthropic.com> Generated with [Claude Code](https://claude.com/claude-code) Signed-off-by: Elad Tabak <etabak@redhat.com>
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@tzvatot: This pull request references OSAC-1604 which is a valid jira issue. Warning: The referenced jira issue has an invalid target version for the target branch this PR targets: expected the feature to target the "5.1.0" version, but no target version was set. DetailsIn response to this:
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This repository does not receive automatic reviews because it has fewer than 10 stars. ⚙️ Run configurationConfiguration used: Repository: osac-project/coderabbit/.coderabbit.yaml Review profile: CHILL Plan: Pro Plus Run ID: WalkthroughThe design defines granular cluster conditions, per-node-set status fields, preserved reasons, HyperShift-derived propagation, stall detection, guarded events, API and CLI exposure, testing, and version-skew handling. ChangesGranular cluster status reporting
Estimated code review effort: 3 (Moderate) | ~20 minutes Merge Risk: 🟠 High · up to The change expands cluster status reporting and adds new readiness, progress, and metering behavior, but unresolved status mappings, readiness calculations, node-set attribution, stall detection, and transition-time ownership could produce incorrect or missing user-visible status. The PR is not merge-ready until these contracts and behaviors are clarified. 🚥 Pre-merge checks | ✅ 11✅ Passed checks (11 passed)
Full details: Docstring CoverageExplanation No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check. Docstring coverage is scoped to functions touched by this diff. Analyzed 0 functions across 0 files. (1 skipped: 1 unsupported.) Full details: No-Hardcoded-SecretsExplanation PASS: The pull request adds only Full details: No-Weak-CryptoExplanation PASS — The pull request adds only one design document. The changed content defines cluster status, protobuf fields, controller mappings, events, and CLI output. An exact scan of all added lines found no MD5, SHA1, DES/3DES, RC4, Blowfish, ECB, HmacSHA1, custom cryptography, or secret/token comparisons. Therefore, no weak-crypto usage is introduced. Full details: No-Injection-VectorsExplanation PASS: The pull request adds only Full details: Container-PrivilegesExplanation PASS: The pull request adds only Full details: No-Sensitive-Data-In-LogsExplanation PASS — The pull request adds only a design document. It adds no logging implementation and contains no passwords, tokens, API keys, PII, session IDs, or customer payloads. The proposed Kubernetes events use fixed provisioning reasons and stage messages. The document mentions affected node sets and existing endpoint fields, but it does not propose logging hostnames or sensitive values. Full details: Ai-AttributionExplanation AI use is explicit in the PR commit. The commit contains ✨ Finishing Touches🧪 Generate unit tests (beta)
Comment |
AI Design Review: EP-227Score: 7/8 | Verdict: PASS
Verdict: A strong, well-grounded design that adapts a proven pattern (OSAC-1027) for CaaS clusters with deep implementation specificity; the only material gap is placeholder graduation criteria. Feedback: Define measurable graduation criteria instead of deferring — e.g., 'Dev Preview: all CRUD operations pass e2e, condition mapping coverage >95% in unit tests; GA: 30-day production soak with no stall-timer false positives.' Also address the documentation dimension: state whether user-facing docs for the new CLI output, reason vocabulary, and API extensions are in scope or explicitly deferred. Minor: clarify the relationship between ClusterNodeSet.size (existing) and desired_replicas (new) — are they redundant, or does size represent the user's requested count while desired_replicas reflects the operator's target? Critical (0)None. Important (2)
Suggestions (3)
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Actionable comments posted: 8
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Inline comments:
In `@enhancements/OSAC-1604-granular-cluster-status-reporting/design.md`:
- Around line 208-219: Define explicitly whether state=READY is lifecycle-only
or requires worker readiness, including the READY condition value during
degradation and scaling when WORKERS_READY is false. Apply the chosen contract
consistently across the workflow, CLI output, list columns, and related tests,
using the existing ClusterConditionType symbols.
- Around line 282-310: Complete the CR-to-proto condition mapping design by
defining entries for every source condition, including FAILED and DEGRADED, with
explicit target type, status, and reason behavior. Specify collision handling
and precedence when multiple CR conditions map to PROGRESSING, and reconcile
storage/deletion handling so each condition is either mapped to its required
distinct proto condition or explicitly ignored. Ensure the table and test plan
agree.
- Around line 332-338: Update the stalled-detection design to define thresholds
for every workflow stage, including Scaling, DestroyingCloudResources, and
DestroyingControlPlane, and preserve the promised stalled scaling and
DELETE_FAILED teardown behavior. In the reconcile logic, compute elapsed time
from each stage’s PROGRESSING lastTransitionTime and set RequeueAfter to the
remaining interval, clamped to zero, rather than requeueing for the full
threshold.
- Around line 323-331: The NodePool readiness derivation must not treat
status.Replicas as a ready-replica count. Update handleNodePool and the
ClusterNodeSet status mapping to use an actual numeric ready source when
available; otherwise represent readiness as explicitly unknown or partial, or
revise the field semantics instead of emitting a false X-of-Y value. Define and
consistently apply whether Ready and AllNodesHealthy are combined with AND or OR
when computing WORKERS_READY.
- Around line 532-550: Extend the upgrade/version-skew strategy around the
status contract to define and test the operator-new → service-old → JSON
persistence → client-old round trip, including an old-binary read-modify-write
case. Document the expected preserve, reject, or normalize behavior for
CONTROL_PLANE_AVAILABLE and WORKERS_READY at each private/public projection
boundary, including their differing field numbers.
- Around line 356-364: Revise the state_transition_time design to designate
exactly one authoritative writer, either the operator feedback path around
SetState or the fulfillment reconciler’s state-delta handling. Define that the
timestamp is updated only when the state actually changes, preserved across
unrelated reconciles, and never overwritten by the non-owning path before using
it for metering.
- Around line 316-322: Define explicit precedence and combination semantics
between HyperShift Available and KubeAPIServerAvailable before deriving
CONTROL_PLANE_AVAILABLE, including the authoritative condition and behavior for
False and Unknown values. Update the granular status logic and add tests
covering every condition-value combination.
- Around line 323-326: Preserve each ClusterSpec.node_sets map key through
ClusterOrder.NodeRequest, rather than relying on ResourceClass alone. Update
handleNodePool and related status updates to attribute every NodePool to the
matching ClusterNodeSet by this validated stable identifier, allowing multiple
node sets with the same host type without overwriting status.
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enhancements/OSAC-1604-granular-cluster-status-reporting/design.md
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Revise the granular cluster status design to fix mechanisms flagged in self-review that would not behave as originally described: - ready_replicas: verified against the pinned HyperShift API that no per-node ready count is reachable (NodePoolStatus has only Replicas; operator has no Cluster-API access). Document ready_replicas as binary; current_replicas (status.Replicas) still provides granular join/scaling progress. State the follow-up needed for a true ready count. - Stall detection: key each stage timer off its stage-marking CR condition's own lastTransitionTime (or a persisted reason/since pair), not PROGRESSING's - which only bumps on status change, not reason change. Mandate a fake-clock test asserting stage-elapsed, not run-elapsed. - state_transition_time: single authoritative writer (operator feedback path); reconciler read-only. Avoids read-modify-write race. - Teardown stall: DELETE_FAILED reserved for a real HyperShift failure; slow teardown stays DELETING and surfaces Stalled via teardown thresholds. - Version skew: correct proto3 unknown-enum semantics (values round-trip as raw numbers, not coerced to UNSPECIFIED); require CLI/CEL to bucket unknown values. - WorkersJoining threshold per-host-type overridable; defaults provisional. - Clarify size vs desired_replicas; add measurable graduation criteria; add documentation-boundary non-goal. EP: https://redhat.atlassian.net/browse/OSAC-1604 Assisted-by: Claude Code <noreply@anthropic.com> Generated with [Claude Code](https://claude.com/claude-code) Signed-off-by: Elad Tabak <etabak@redhat.com>
AI Design Review: EP-227Score: 8/8 | Verdict: PASS
Verdict: A high-quality design document that follows OSAC patterns precisely, provides deep implementation detail with proto schemas and codebase references, identifies latent bugs, and includes a specific multi-level test plan with measurable graduation criteria. Feedback: This design is ready for merge with minor polish. Consider adding explicit configurable threshold values to the proto or a ConfigMap spec (the text says 'controller-configurable' but doesn't specify the configuration mechanism — Helm values, ConfigMap, controller flags). The ClusterNodeSet proto sketch notes field numbers are 'indicative' — nail these down before implementation to avoid review churn. The stall timer design is thorough but the '(observedReason, since) pair in ClusterOrder status' fallback for stages without a dedicated CR condition could benefit from a concrete example showing exactly which stages use this path versus the CR condition lastTransitionTime path. Critical (0)None. Important (2)
Suggestions (3)
Review costModel: claude-opus-4-6 |
- Fix buf.validate claim: OLM fields are validated by Pydantic, not proto - Fix stale "rescue block" reference in Open Question 1 - Remove StorageReconciler pattern comparison (incorrect precedent) - Make default published state a genuine open question throughout - Add PR osac-project#227 (OSAC-1604) interaction note for DEGRADED condition - Add see-also references for OSAC-3538 and OSAC-1604 Assisted-by: Claude Code <noreply@anthropic.com> Signed-off-by: Trey West <trwest@redhat.com>
Assisted-by: Claude Code <noreply@anthropic.com> Signed-off-by: Elad Tabak <etabak@redhat.com>
AI Design Review: EP-227Score: 8/8 | Verdict: PASS
Verdict: This is an exemplary design document — deeply technical, architecturally sound, and honest about limitations — that follows all OSAC patterns, provides complete condition mapping with no silent defaults, includes proto schemas, thoroughly addresses failure modes and version skew, and specifies a concrete multi-level test strategy with measurable graduation criteria. Feedback: The design is ready for merge with only minor polish suggestions. Consider specifying the configuration mechanism for stall thresholds (ConfigMap, controller flags, etc.) rather than leaving it at 'controller-configurable' — reviewers will ask. The degraded-to-healthy recovery path (workers recover, DEGRADED clears, WORKERS_READY flips True, READY condition goes True) is implied by idempotent re-derivation each reconcile but could be stated as an explicit variation alongside the existing degradation scenario for completeness. Critical (0)None. Important (0)None. Suggestions (3)
Structural notes (0)None. Review costModel: claude-opus-4-6 |
| resize) whenever a usable control plane has unready workers - even while `state` | ||
| stays `READY`. "Usable but not fully healthy" is therefore read as `state=READY` | ||
| + `READY` condition `False` + the orthogonal health conditions. The CLI HEALTH |
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so we have state=READY but Ready condition False? Can we disambiguate this with different naming? I think uers or devs might find this confusing
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Agreed the collision is confusing. Renamed the rollup condition READY -> AVAILABLE (number unchanged). This follows the OpenShift ClusterOperator / HyperShift HostedCluster convention, where Available/Progressing/Degraded is the cluster-level health rollup and there is no cluster-level Ready condition (Kubernetes reserves Ready for Nodes). So "usable but not fully healthy" now reads as state=READY + AVAILABLE condition False, with no word collision. The rename is safe because the READY condition is never actually emitted today (latent bug 1 drops it at the feedback boundary), so no stored object or consumer depends on it. Updated the condition table, the state-vs-condition contract, the CR->proto mapping, and the tests.
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| - **Degraded (AC-3).** Control plane healthy but a NodePool reports |
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Under what conditions DEGRADED will go back to False?
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The operator doesn't track "we are degraded" as a state it later has to undo. On every reconcile it recomputes all conditions from scratch based on what HyperShift currently reports. DEGRADED is set to True only while the operator observes a problem (HC Degraded, or a NodePool not AllNodesHealthy). The moment the underlying problem clears - HC Degraded back to False and every NodePool Ready AND AllNodesHealthy - the next reconcile simply recomputes DEGRADED as False; WORKERS_READY flips back True and the AVAILABLE condition returns True. So there's no dedicated "clear degraded" code path; it clears on the next reconcile once the signals recover. I added an explicit "Degraded -> recovered" variation to the workflow section spelling this out (same for Scaling, which clears when the resized set reaches desired_replicas).
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lgtm overall, just minor comments/clarification question |
…very Address review feedback on design EP osac-project#227: - Rename rollup ClusterConditionType READY -> AVAILABLE (OpenShift/HyperShift convention; removes collision with lifecycle state=READY) - Document DEGRADED/Scaling automatic recovery via idempotent re-derivation - Fix happy-path ready_replicas text (current_replicas climbs; ready_replicas is binary) Assisted-by: Claude Code <noreply@anthropic.com> Signed-off-by: Elad Tabak <etabak@redhat.com>
AI Design Review: EP-227Score: 8/8 | Verdict: PASS
Verdict: An exemplary design document that adapts the proven OSAC-1027 ComputeInstance status pattern to CaaS clusters with deep technical specificity, exhaustive condition mapping, honest documentation of limitations, and a thorough multi-level test plan. Feedback: The design is strong across all dimensions. Two minor improvements: (1) Consider adding a formal Terminology section at the top - while terms are well-defined inline, the review-patterns.md reference library notes this as a pattern of successful EPs, and the number of new concepts (orthogonal conditions, sub-stage reasons, stage thresholds, availability precedence) would benefit from a consolidated glossary. (2) The Graduation Criteria GA stage ('production soak with no material Stalled false-positives over an agreed window') would be stronger with a proposed soak duration and false-positive threshold rather than deferring both to finalization. Critical (0)None. Important (0)None. Suggestions (3)
Structural notes (0)None. Review costModel: claude-opus-4-6 |
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Thanks @rccrdpccl - addressed both inline comments and pushed the changes:
Also folded in the one remaining CodeRabbit nit (happy-path |
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/lgtm |
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[APPROVALNOTIFIER] This PR is APPROVED This pull-request has been approved by: rccrdpccl, tzvatot The full list of commands accepted by this bot can be found here. The pull request process is described here DetailsNeeds approval from an approver in each of these files:
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…very Address review feedback on design EP osac-project#227: - Rename rollup ClusterConditionType READY -> AVAILABLE (OpenShift/HyperShift convention; removes collision with lifecycle state=READY) - Document DEGRADED/Scaling automatic recovery via idempotent re-derivation - Fix happy-path ready_replicas text (current_replicas climbs; ready_replicas is binary) Assisted-by: Claude Code <noreply@anthropic.com> Signed-off-by: Elad Tabak <etabak@redhat.com>
3 participants
Design: Granular Cluster Status Reporting
Jira: https://redhat.atlassian.net/browse/OSAC-1604
PRD:
enhancements/OSAC-1604-granular-cluster-status-reporting/prd.md(merged in #209)Summary
Makes CaaS cluster status as granular as VMaaS made ComputeInstance status in
OSAC-1027. It fixes the osac-operator feedback controller that today collapses
every ClusterOrder condition into a single fulfillment
PROGRESSINGcondition,derives per-stage provisioning progress and orthogonal health signals from the
HyperShift
HostedCluster/NodePoolstate the operator already watches, addsper-node-set readiness to the
Clusterproto, and renders it throughosac describe cluster. Scope is backend only (proto, operator, CLI, events);the web console (AC-7/IS-6) is owned by the osac-ux team and consumes the same
API.
Requesting Review On
ClusterConditionTypevalues(
CONTROL_PLANE_AVAILABLE,WORKERS_READY) for the health axes AC-3 needssimultaneously, plus a
PROGRESSING.reasonvocabulary for the linearprovisioning sub-stage. Confirm this over pure reason-cycling (the exact
OSAC-1027 shape).
PreparingInfrastructure15m,
ControlPlaneStarting30m,WorkersJoining20m. Sanity-check the values.ready_replicas. HyperShift exposes no numeric ready count, so"X of Y ready" is derived from
status.Replicasgated by NodePoolAllNodesHealthy/Ready. Confirm the approximation is acceptable.signal; unmapped CR conditions) - confirm folding them into this change rather
than separate bugfixes.
verified already satisfied; P1 (
state_transition_timeon every transition) isa gap fixed here. Confirm this is the right split vs OSAC-4077.
Documents
design.md- technical design documentHow to Review
Summary by CodeRabbit