[OADP-8716] Pin MCE to stable-2.8 only below OCP 4.19, matching HCP target env

[kaovilai]

Fixes: OADP-8716

Summary

periodic-ci-openshift-oadp-operator-oadp-1.6-4.18-e2e-test-hcp-aws-periodic fails in the HCP suite's BeforeAll:

Timed out after 600.003s.
Eventually returned error: deployments.apps "operator" not found

MCE (multicluster-engine) v2.11.5's backplane-operator reconciler hard-rejects the MultiClusterEngine CR with a hardcoded minimum-OpenShift-version check (OCP version ... did not meet minimum version requirement of 4.19.0), introduced in stolostron/backplane-operator#3784. This fires before any managed component — including the HyperShift operator Deployment — is created, while MCE's own operator Deployment/CSV report Ready/Succeeded normally, so the failure is otherwise invisible.

MCE 2.11 (ACM 2.16) doesn't officially support OCP 4.18 — only via an unsupported support-exception path. Our actual GovCloud HCP target environment doesn't run MCE 2.11 at all: it's ACM 2.13 / MCE 2.8, moving to ACM ~2.15 later (ROSAENG-58373). The MCE Subscription had no Channel set, so it floated onto whatever the 4.18 catalog's default channel resolved to (stable-2.11) rather than the version this test actually needs to validate against. Tracked in OADP-7564 (OADP 1.6 HCP support on OCP 4.18 for ROSA GovCloud).

HCP e2e isn't 4.18-only. ci-operator/config in openshift/release has TEST_HCP set for oadp-1.6 on OCP 4.18, 4.22, 4.23, and 5.0 — all running the same test binary off the same branch. stable-2.8's head bundle declares olm.maxOpenShiftVersion: 4.19, an OLM-enforced cap, so a channel pin can't be a single hardcoded value without breaking the newer-OCP jobs.

Design

• tests/e2e/lib/hcp/mce.go: SelectMCEChannel reads the cluster's ClusterVersion and returns stable-2.8 below OCP 4.19 (matching the ACM 2.13/MCE 2.8 pairing the real GovCloud target runs), or "" at 4.19 and above, signaling the caller to float on MCE's default channel as before — where MCE 2.11 installs fine and the other HCP periodics already run.
• tests/e2e/hcp_backup_restore_suite_test.go: the MCE Subscription's Channel is set from SelectMCEChannel's result instead of a hardcoded value.
• DumpHypershiftDiagnostics (tests/e2e/lib/hcp/mce.go) captures MCE operator pod logs (filtered to a small keyword allowlist — error/denied/forbidden/minimum version/reconcile — then further redacted: embedded URLs stripped, lines length-bounded), MultiClusterEngine CR conditions/components, and pod/event listings in the hypershift/multicluster-engine namespaces. None of this was previously captured by CI artifacts, which otherwise leave a BeforeAll timeout undiagnosable from the artifacts alone. Runs against a 30s-bounded context derived internally (it's called from a Ginkgo failure-message callback, which must return promptly), including the pod-log fetch — which goes through a shared helper that ignores any context and streams via its own unbounded one internally, so that one call is wrapped in a goroutine raced against the bound instead. Logged Kubernetes errors are reduced to their structured status reason (e.g. NotFound) rather than full error text, which for a transport-level error can embed the API server's URL.

Production additionally pins the HyperShift operator image itself to a specific SHA via an admin-controlled hypershift-override-images ConfigMap (distinct from the tenant-writable install-flags ConfigMap stolostron/hypershift-addon-operator locks down for CVE-2026-66808) — not replicated here since the real pinned image reference is internal, but noted as a code comment at the channel-selection call site as a future extension point (would be sourced from an env var, not hardcoded, if needed).

Known limitations

• Check with the OADP/HCP team from time to time for updated ACM/MCE version requirements before assuming the 4.19 threshold and stable-2.8 stay correct indefinitely — see the code comments at SelectMCEChannel and its call site, OADP-7564, and ROSAENG-58373.
• SelectMCEChannel hasn't been exercised against a live 4.22/4.23/5.0 cluster to confirm the "leave Channel unset" branch behaves identically to today's pre-fix code path there — the logic is equivalent (empty Channel was always the existing behavior), but only the 4.18 branch has been reasoned through against real failure data.

Testing

• go build ./tests/e2e/... and go vet ./tests/e2e/... — clean.
• make lint — 0 issues.
• Can't run the live HCP suite locally (needs a 4.18+HCP-capable AWS cluster).

Test plan

• go vet ./tests/e2e/... passes
• Next periodic run on 4.18 (or manual rerun) confirms stable-2.8 installs cleanly and the HyperShift operator becomes ready
• Next periodic run on 4.22/4.23/5.0 confirms no regression (channel stays unset, behavior unchanged)
• Cherry-pick to oadp-1.6 after merge (release branch, not targeted directly per repo convention)

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Walkthrough

MCE installation now selects its channel from the cluster OCP version. MCE and HyperShift readiness failures now collect additional diagnostics, including filtered MCE operator logs.

Changes

MCE and HyperShift setup

Layer / File(s)	Summary
OCP-based MCE channel selection tests/e2e/lib/hcp/mce.go, tests/e2e/hcp_backup_restore_suite_test.go	The setup reads and validates the OCP version. It selects stable-2.8 below OCP 4.19 and the default channel otherwise.
MCE and HyperShift readiness diagnostics tests/e2e/lib/hcp/mce.go, tests/e2e/hcp_backup_restore_suite_test.go	Readiness failures collect resource, pod, event, condition, component, and filtered MCE operator log diagnostics. The suite checks HyperShift readiness after manifest deployment.

Estimated code review effort: 3 (Moderate) | ~20 minutes

Merge Risk: 🟡 Moderate · up to 270f8

The PR improves HCP failure diagnostics but currently writes raw cluster errors and operator logs to CI artifacts, which may expose internal hostnames or customer data. Merge should wait for those diagnostics to be redacted or narrowly allowlisted.

Suggested reviewers: shubham-pampattiwar, eemcmullan

Sequence Diagram(s)

sequenceDiagram
  participant BackupRestoreSuite
  participant SelectMCEChannel
  participant OpenShiftConfig
  participant MCEInstallation
  participant DumpHypershiftDiagnostics
  participant KubernetesClientset

  BackupRestoreSuite->>SelectMCEChannel: request channel
  SelectMCEChannel->>OpenShiftConfig: read OCP version
  OpenShiftConfig-->>SelectMCEChannel: desired status or version history
  SelectMCEChannel-->>BackupRestoreSuite: selected channel
  BackupRestoreSuite->>MCEInstallation: install MCE
  BackupRestoreSuite->>DumpHypershiftDiagnostics: collect diagnostics on readiness failure
  DumpHypershiftDiagnostics->>KubernetesClientset: list pods and read filtered operator logs
  KubernetesClientset-->>DumpHypershiftDiagnostics: diagnostic data
  BackupRestoreSuite->>BackupRestoreSuite: validate HyperShift readiness after manifest deployment

Loading

---

Important

Pre-merge checks failed

Please resolve all errors before merging. Addressing warnings is optional.

❌ Failed checks (1 error, 2 warnings)

Check name	Status	Explanation	Resolution
No-Sensitive-Data-In-Logs	❌ Error	The new DumpHypershiftDiagnostics path logs raw MCE operator pod-log lines. It only filters for generic substrings such as error, denied, and reconcil; it does not redact tokens, passwords, AP…	Do not log arbitrary pod-log lines. Replace them with fixed diagnostic categories and explicitly allow-listed, non-sensitive fields. If raw lines are required, apply a tested redaction step before logging that removes credentials, tokens, A…
Docstring Coverage	⚠️ Warning	Docstring coverage is 75.00% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 4 functions across 4 files.	Write docstrings for the functions missing them to satisfy the coverage threshold.
Microshift Test Compatibility	⚠️ Warning	The modified Ginkgo HCP suite now calls libhcp.SelectMCEChannel from its BeforeAll. That function creates and reads configv1.ClusterVersion (config.openshift.io/v1), which MicroShift does not …	MicroShift compatibility notice: This test uses an API that is not available on MicroShift. If this repository's presubmit CI does not already include MicroShift jobs, verify the test with an additional CI job: For parallel tests: `/pay…

✅ Passed checks (12 passed)

Check name	Status	Explanation
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Stable And Deterministic Test Names	✅ Passed	No changed Ginkgo test title was introduced. The full two-commit diff adds setup, channel-selection, and diagnostics code only. The current Describe, DescribeTable, and Entry titles are static a…
Test Structure And Quality	✅ Passed	PASS: The pull request introduces no new Ginkgo It block or resource-creation path. The existing suite setup already uses BeforeAll with AfterAll/AfterEach cleanup. All readiness checks in the…
Single Node Openshift (Sno) Test Compatibility	✅ Passed	No new Ginkgo test is added. The PR changes the existing HCP Backup and Restore tests BeforeAll setup and adds MCE channel selection and best-effort diagnostics. The declaration comparison shows t…
Topology-Aware Scheduling Compatibility	✅ Passed	The PR changes only HCP e2e setup and diagnostics. It adds OCP-version-based MCE channel selection and reads existing pod, event, and CR status data. The diff adds no deployment manifests, controller …
Ote Binary Stdout Contract	✅ Passed	PASS. The PR adds only log.Printf calls and fmt.Sprintf/fmt.Errorf calls. Go's standard logger defaults to os.Stderr, and repository inspection found no redirection to os.Stdout or klog stdo…
Ipv6 And Disconnected Network Test Compatibility	✅ Passed	PASS: The PR does not add a new Ginkgo test declaration. It changes the existing suite's BeforeAll setup and adds Kubernetes API diagnostics. The added code contains no IPv4 addresses, IPv4-only parsi…
No-Weak-Crypto	✅ Passed	The complete PR diff from base 4a4ee69 to HEAD adds OCP version parsing, channel selection, Kubernetes diagnostics, and filtered logging only. The changed Go files add no cryptographic imports or call…
Container-Privileges	✅ Passed	PASS: The pull request changes only two Go test/helper files. The added code selects an MCE channel and collects diagnostics; it does not add Kubernetes manifests or security settings. The complete pa…
Title check	✅ Passed	The title clearly summarizes the primary change: pinning MCE to stable-2.8 only for OCP versions below 4.19.
Description check	✅ Passed	The description explains why the change was needed, describes the implementation, documents limitations, and provides testing results and a test plan. It covers the required rationale and testing info…

Full details: Stable And Deterministic Test Names

Explanation

No changed Ginkgo test title was introduced. The full two-commit diff adds setup, channel-selection, and diagnostics code only. The current Describe, DescribeTable, and Entry titles are static and match the base revision. No dynamic values appear in test titles.

Full details: Test Structure And Quality

Explanation

PASS: The pull request introduces no new Ginkgo It block or resource-creation path. The existing suite setup already uses BeforeAll with AfterAll/AfterEach cleanup. All readiness checks in the changed setup use explicit 10-minute timeouts and 5-second polling intervals. The new failure descriptions identify the MCE or HyperShift deployment that failed, and the channel-selection failure includes the OCP-version error. The new diagnostics and version lookup perform bounded API operations through the supplied context and do not add an indefinite Eventually or Consistently call. Existing assertions without messages and existing MCE cleanup behavior are unchanged by this pull request.

Full details: Microshift Test Compatibility

Explanation

The modified Ginkgo HCP suite now calls libhcp.SelectMCEChannel from its BeforeAll. That function creates and reads configv1.ClusterVersion (config.openshift.io/v1), which MicroShift does not serve. The enclosing Describe and entries have no [Skipped:MicroShift], [apigroup:...], or IsMicroShiftCluster/g.Skip() protection. This is new behavior in the pull request and applies to every table entry.

Resolution

MicroShift compatibility notice: This test uses an API that is not available on MicroShift. If this repository's presubmit CI does not already include MicroShift jobs, verify the test with an additional CI job: For parallel tests: /payload-job periodic-ci-openshift-microshift-release-4.22-periodics-e2e-aws-ovn-ocp-conformance For serial tests: /payload-job periodic-ci-openshift-microshift-release-4.22-periodics-e2e-aws-ovn-ocp-conformance-serial Because this HCP test is intentionally not applicable to MicroShift, preferably add [apigroup:config.openshift.io] to the enclosing test name, or add [Skipped:MicroShift]. A runtime exutil.IsMicroShiftCluster() check followed by g.Skip() is also valid.

Full details: Single Node Openshift (Sno) Test Compatibility

Explanation

No new Ginkgo test is added. The PR changes the existing HCP Backup and Restore tests BeforeAll setup and adds MCE channel selection and best-effort diagnostics. The declaration comparison shows the same Describe and DescribeTable entries before and after the PR. The added code contains no multi-node or HA assumptions such as node counts, affinity, topology spread, draining, rescheduling, scaling, or cross-node endpoints.

Full details: Topology-Aware Scheduling Compatibility

Explanation

The PR changes only HCP e2e setup and diagnostics. It adds OCP-version-based MCE channel selection and reads existing pod, event, and CR status data. The diff adds no deployment manifests, controller logic, replicas, affinity, topology spread, node selectors or affinity, tolerations, PDBs, or other scheduling constraints. Therefore, it does not introduce a topology compatibility failure under this check.

Full details: Ote Binary Stdout Contract

Explanation

PASS. The PR adds only log.Printf calls and fmt.Sprintf/fmt.Errorf calls. Go's standard logger defaults to os.Stderr, and repository inspection found no redirection to os.Stdout or klog stdout setup. The new diagnostics call returns pod logs and emits them through log.Printf; it does not write directly to stdout. No added process-level fmt.Print*, klog, or Ginkgo configuration output was found.

Full details: Ipv6 And Disconnected Network Test Compatibility

Explanation

PASS: The PR does not add a new Ginkgo test declaration. It changes the existing suite's BeforeAll setup and adds Kubernetes API diagnostics. The added code contains no IPv4 addresses, IPv4-only parsing, CIDRs, IP-based URLs, external URLs, public host lookups, or curl/wget calls. The MCE channel is applied to the existing in-cluster OLM Subscription using the cluster's CatalogSource; the diagnostics query cluster resources and pod logs only.

Full details: No-Weak-Crypto

Explanation

The complete PR diff from base 4a4ee69 to HEAD adds OCP version parsing, channel selection, Kubernetes diagnostics, and filtered logging only. The changed Go files add no cryptographic imports or calls. The only SHA reference is a comment about an image digest pin; it is not SHA1 usage. No MD5, SHA1, DES, 3DES, RC4, Blowfish, ECB mode, custom crypto, or secret/token comparisons were introduced.

Full details: Container-Privileges

Explanation

PASS: The pull request changes only two Go test/helper files. The added code selects an MCE channel and collects diagnostics; it does not add Kubernetes manifests or security settings. The complete patch contains no privileged, hostPID, hostNetwork, hostIPC, SYS_ADMIN, allowPrivilegeEscalation, or runAs* settings. The referenced MCE operand manifest is unchanged and contains none of these indicators.

Full details: No-Sensitive-Data-In-Logs

Explanation

The new DumpHypershiftDiagnostics path logs raw MCE operator pod-log lines. It only filters for generic substrings such as error, denied, and reconcil; it does not redact tokens, passwords, API keys, hostnames, or customer data. Any matching operator log line containing such data is emitted unchanged by log.Printf(... line). The new failure callbacks invoke this path during CI failures, so the pull request introduces a direct path from cluster log content to test logs/artifacts.

Resolution

Do not log arbitrary pod-log lines. Replace them with fixed diagnostic categories and explicitly allow-listed, non-sensitive fields. If raw lines are required, apply a tested redaction step before logging that removes credentials, tokens, API keys, URLs/internal hostnames, PII, session IDs, and customer/resource data, and bounds the output. Apply the same review to dynamically logged error text and event/resource names.

Full details: Description check

Explanation

The description explains why the change was needed, describes the implementation, documents limitations, and provides testing results and a test plan. It covers the required rationale and testing information despite using different section headings from the template.

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Actionable comments posted: 3

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Inline comments:
In `@tests/e2e/lib/hcp/mce.go`:
- Around line 148-151: Update the diagnostic logging near the conditions,
components, and event.Message handling to avoid emitting raw API-provided values
into CI artifacts. Log only explicitly allow-listed non-sensitive fields or
redact sensitive strings before the relevant log.Printf calls, while preserving
the existing diagnostic intent.
- Around line 140-170: Update DumpHypershiftDiagnostics to create a short-lived
timeout context at entry, ensure it is canceled, and use that derived context
for every c.Get and c.List call instead of the incoming context. Preserve the
existing diagnostic logging and iteration behavior.
- Around line 148-150: Update the diagnostics around NestedSlice calls in the
MCE status inspection flow to capture each conversion error for
status.conditions and status.components, log both errors with useful field
context, and continue collecting the remaining diagnostics.

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Inline comments:
In `@tests/e2e/hcp_backup_restore_suite_test.go`:
- Around line 257-260: Update RemoveMCE so its polling condition treats a
not-found result from h.Client.Get as completion, while a successfully found MCE
operand continues polling until removal finishes. Preserve the existing error
handling for other Get failures so fallback installation starts only after
removal is confirmed.
- Around line 257-258: Update the fallback assertions around RemoveMCE and
DeleteMCECSV to include operation-specific failure messages, identifying the
relevant MCE CSV value (currentCsv or fallbackCsv) and the operation that failed
for each assertion.

In `@tests/e2e/lib/hcp/utils.go`:
- Around line 172-175: Update the c.Get handling in the
wait.PollUntilContextTimeout callback to retry only expected transient read
errors and return permanent errors immediately; preserve the existing logging
and polling behavior for retryable failures, and ensure every non-retryable
error is propagated instead of converted to false, nil.

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Inline comments:
In `@tests/e2e/lib/hcp/mce.go`:
- Around line 195-213: The filterLogLines path must sanitize matched pod-log
lines before CI emission, and the GetPodContainerLogs error logging path must
not emit raw error text. Add or reuse an allow-list/redaction step after
filterLogLines and before writing either value to CI artifacts, preserving only
approved diagnostic content while removing sensitive data.
- Around line 266-269: The pod-log request in DumpHypershiftDiagnostics lacks a
bounded context and can stall diagnostics indefinitely. Create a short-lived
timeout context within DumpHypershiftDiagnostics and pass it to
GetPodContainerLogs, updating that helper’s signature and Kubernetes request
handling to honor the context while preserving existing log collection behavior.

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Inline comments:
In `@tests/e2e/hcp_backup_restore_suite_test.go`:
- Around line 251-253: Update the readiness-error logging branch around
IsDeploymentReady to avoid logging the raw err value with %v; use a fixed
message or sanitized error classification that cannot expose API server URLs or
internal hostnames, while preserving the existing wait behavior.

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/hold

Confirmed with the MCE team — the OCP 4.19 minimum in backplane-operator#3784 is intentional, not a bug: MCE 2.11 (ACM 2.16) doesn't officially support OCP 4.18, only via the support-exception process, and the team is actively trying to make that harder to hit by accident. DISABLE_OCP_MIN_VERSION exists as an escape hatch but isn't the recommended path.

More importantly: our actual GovCloud HCP target environment doesn't run MCE 2.11 at all — it's currently ACM 2.13 / MCE 2.8, moving to ACM ~2.15 for extended support. So falling back to v2.11.4 — still inside the unsupported stable-2.11 line — doesn't match what we actually need to validate against.

New direction: we want to be testing HCP backup and restore with OADP 1.6, ACM 2.13, and MCE 2.8, running on OCP 4.18 — pinning the test's MCE channel to stable-2.8 explicitly instead of floating on the 4.18 index's default channel. Tracked in OADP-7564. Updating this PR accordingly.

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/hold cancel

Pushed the stable-2.8 channel pin matching the confirmed ACM 2.13/MCE 2.8 target environment.

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⚠️ Outside diff range comments (1)

tests/e2e/hcp_backup_restore_suite_test.go (1)

259-260: 🩺 Stability & Availability | 🟡 Minor | ⚡ Quick win

Propagate the polling context to the readiness GET.

wait.PollUntilContextTimeout passes its deadline context to the condition, but lib.IsDeploymentReady calls ocClient.Get(context.Background(), ...). A blocked API request can therefore outlive the 10-minute polling timeout. Add a context-aware readiness helper and pass ctx to Client.Get.

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only still-valid issues, skip the rest with a brief reason, keep changes
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In `@tests/e2e/hcp_backup_restore_suite_test.go` around lines 259 - 260, Update
the readiness path used by the PollUntilContextTimeout condition around
IsDeploymentReady so it accepts the polling context and passes that ctx to
Client.Get instead of context.Background(). Add or use a context-aware readiness
helper while preserving the existing deployment and namespace checks.

Source: Path instructions

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Outside diff comments:
In `@tests/e2e/hcp_backup_restore_suite_test.go`:
- Around line 259-260: Update the readiness path used by the
PollUntilContextTimeout condition around IsDeploymentReady so it accepts the
polling context and passes that ctx to Client.Get instead of
context.Background(). Add or use a context-aware readiness helper while
preserving the existing deployment and namespace checks.

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@kaovilai I will perform a full review of the current changes, including the stable-2.8 channel pin and the MCE fallback logic.

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Actionable comments posted: 1

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Inline comments:
In `@tests/e2e/lib/hcp/mce.go`:
- Around line 230-231: Update the diagnostic logging around the MCE retrieval
and the additional referenced log statements to avoid writing raw Kubernetes
errors or operator log lines; redact sensitive values or emit only allow-listed
fields before calling log.Printf, while preserving the diagnostic context and
failure handling.

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Reviewing files that changed from the base of the PR and between 3609d02 and 270f8a6.

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• tests/e2e/hcp_backup_restore_suite_test.go
• tests/e2e/lib/hcp/mce.go

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[weshayutin]

/LGTM
we don't have prechecks w/ this just periodic

[kaovilai]

/cherry-pick oadp-1.6

[openshift-cherrypick-robot]

@kaovilai: once the present PR merges, I will cherry-pick it on top of oadp-1.6 in a new PR and assign it to you.

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In response to this:

/cherry-pick oadp-1.6

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[openshift-ci]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: kaovilai, shubham-pampattiwar, sseago, weshayutin

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• tests/e2e/OWNERS [kaovilai,shubham-pampattiwar,sseago,weshayutin]

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[openshift-ci]

@kaovilai: all tests passed!

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[kaovilai]

/cherry-pick oadp-1.6

[openshift-cherrypick-robot]

@kaovilai: new pull request created: #2412

Details

In response to this:

/cherry-pick oadp-1.6

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes-sigs/prow repository.

[openshift-cherrypick-robot]

@kaovilai: new pull request could not be created: failed to create pull request against openshift/oadp-operator#oadp-1.6 from head openshift-cherrypick-robot:cherry-pick-2406-to-oadp-1.6: status code 422 not one of [201], body: {"message":"Validation Failed","errors":[{"resource":"PullRequest","code":"custom","message":"A pull request already exists for openshift-cherrypick-robot:cherry-pick-2406-to-oadp-1.6."}],"documentation_url":"https://docs.github.com/rest/pulls/pulls#create-a-pull-request","status":"422"}

Details

In response to this:

/cherry-pick oadp-1.6

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes-sigs/prow repository.