OCPBUGS-109595: use RetryWatcher and TCP keepalive for create-guests watch resilience - #9435
OCPBUGS-109595: use RetryWatcher and TCP keepalive for create-guests watch resilience#9435ironcladlou wants to merge 1 commit into
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@ironcladlou: This pull request references Jira Issue OCPBUGS-109595, which is valid. 3 validation(s) were run on this bug
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No actionable comments were generated in the recent review. 🎉 ℹ️ Recent review info⚙️ Run configurationConfiguration used: Repository YAML (base), Central YAML (inherited) Review profile: CHILL Plan: Pro Plus Run ID: 📒 Files selected for processing (1)
Included review availability: Your plan provides up to 4 included reviews per hour; 3 remain after this review. 📝 WalkthroughWalkthroughThe create-guests helper configures a custom management client dialer with a 30-second timeout and keepalive. The condition watcher now uses a Suggested reviewers: Merge Risk: ⚪ Minimal · up to This change improves watch reconnection resilience and TCP keepalive behavior for the create-guests test flow; no actionable merge-blocking risk remains beyond normal checks and review. Important Pre-merge checks failedPlease resolve all errors before merging. Addressing warnings is optional. ❌ Failed checks (1 error)
✅ Passed checks (10 passed)
Full details: Stable And Deterministic Test NamesExplanation PASS: The pull request changes only the Full details: Test Structure And QualityExplanation PASS: The pull request changes only the non-Ginkgo Full details: Topology-Aware Scheduling CompatibilityExplanation PASS: The pull request changes only Full details: Ipv6 And Disconnected Network Test CompatibilityExplanation PASS: The pull request modifies only Full details: No-Weak-CryptoExplanation The PR adds Full details: Container-PrivilegesExplanation PASS: The pull request changes only Full details: No-Sensitive-Data-In-LogsExplanation The PR activates raw client-go error logging for the new watch path. Resolution Use a logging-safe client-go context or logger that redacts request URLs and error details, and do not log the raw wrapped watch error. Log only a fixed failure category plus the generated cluster identifier. Verify that list failures, watch reconnect failures, authorization failures, and timeout failures cannot emit URLs, credentials, tokens, or response payloads.
✨ Finishing Touches🧪 Generate unit tests (beta)
Warning Some tools did not complete. Review the errors below. 🔧 golangci-lint (2.12.2)Error: build linters: unable to load custom analyzer "hypershiftlinter": hack/tools/bin/hypershiftlinter.so, plugin: not implemented Comment |
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This would be a good followup, making the operations fully idempotent and reentrant would enable the entire flow to be automatically retryable internally like any other controller loop |
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[APPROVALNOTIFIER] This PR is APPROVED This pull-request has been approved by: ironcladlou 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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Inline comments:
In `@test/e2e/v2/cmd/create-guests/main.go`:
- Around line 421-426: Update the type-check guard before logClusterProgress to
also reject a typed-nil HostedCluster: return false, nil when !ok or hc == nil,
and only call logClusterProgress and predicate for a non-nil hc.
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Fix all unresolved CodeRabbit comments on this PR:
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test/e2e/v2/cmd/create-guests/main.go
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Codecov Report✅ All modified and coverable lines are covered by tests. Additional details and impacted files@@ Coverage Diff @@
## main #9435 +/- ##
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Coverage 46.65% 46.65%
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Files 784 784
Lines 98883 98883
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Hits 46138 46138
Misses 49620 49620
Partials 3125 3125
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/retest |
Test Resultse2e-aws
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…resilience The hand-rolled watchForCondition loop re-creates watches when the channel closes, but if cl.Watch() itself returns a transient error when establishing the new watch connection, it propagates as a hard failure and terminates the entire CI job. Azure load-balancer idle- timeout drops trigger exactly this: the TCP connection dies after ~4min idle, and the reconnection attempt fails before a new connection is established. Two changes fix this: 1. TCP keepalive (30s) on the management client rest.Config sends probes that prevent idle connection reaping before the Azure timeout fires. 2. Replace the hand-rolled watch loop with client-go's toolswatch.UntilWithSync, which uses RetryWatcher internally to re-establish watches on any error (connection drops, timeouts, 410 Gone) with backoff. This is the same machinery kubelet uses. Out of scope: transport-level retry of write operations and application-level CreateOrUpdate recovery. The hook calls (phases 1, 3, 5, 7) are short-lived requests that aren't susceptible to idle-timeout drops. Making those hooks fully reentrant and retryable at the operation level is a separate concern that requires lifting credential generation out of DeployKeycloak so retries produce identical inputs. Fixes OCPBUGS-109595
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Thanks for taking this forward with the simpler client-go approach. Using One observation from the review:
The change is aligned with the targeted |
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/test e2e-aks |
If the hostedcluster is deleted at any point during this flow there's a serious bug somewhere (e.g. cross-test interactions), and the same defensive rationale applies to every other part of the creation flow that interacts with the hostedcluster resource. That is to say, if I assume this is even a possible state to defend against in this narrow case, we might as well add such checks to every other part of the So I don't think this is worth changing here since every other part of the code also makes the same assumptions, and if we want to change those assumptions for some reason, we should think about it holistically as a separate issue. I don't know it's a practical concern |
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/lgtm thanks for clarifying. That makes sense. |
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Local validation performed against commit |
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/verified by e2e-v2-azure-self-managed, @vsolanki12 |
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/retest |
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The hand-rolled watchForCondition loop re-creates watches when the channel closes, but if cl.Watch() itself returns a transient error when establishing the new watch connection, it propagates as a hard failure and terminates the entire CI job. Azure load-balancer idle-timeout drops trigger it: the TCP connection dies after ~4min idle, and the reconnection attempt fails before a new connection is established.
Two changes fix this:
TCP keepalive (30s) on the management client rest.Config sends probes that prevent idle connection reaping before the Azure timeout fires.
Replace the hand-rolled watch loop with client-go's toolswatch.UntilWithSync, which uses RetryWatcher internally to re-establish watches on any error (connection drops, timeouts, 410 Gone) with backoff.
Out of scope: transport-level retry of write operations and application-level CreateOrUpdate recovery. The hook calls (phases 1, 3, 5, 7) are short-lived requests that aren't susceptible to idle-timeout drops. Making those hooks fully reentrant and retryable at the operation level is a separate concern that requires lifting credential generation out of DeployKeycloak so retries produce identical inputs.
Summary by CodeRabbit