Allow more time for the etcd cluster to start up

[kvaps]

This change increases the startupProbe’s failureThreshold from the default value of 3 to 10. With a probe every 5 seconds, that gives etcd up to 50 seconds to start.

In one of my clusters, etcd becomes ready in about 25 seconds.

Summary by CodeRabbit

• Bug Fixes
  • Increased the failure threshold for startup probes to allow more consecutive failures before marking the startup as failed, improving reliability during application startup.

[coderabbitai[bot]]

Walkthrough

The getStartupProbe function in the statefulset controller was updated to set the FailureThreshold field to 10 in the returned probe configuration, allowing more probe failures before marking startup as failed. Correspondingly, the test case was updated to reflect this new threshold. Other probe settings and logic remain unchanged.

Changes

File(s)	Change Summary
internal/controller/factory/statefulset.go	Set FailureThreshold to 10 in startup probe config
internal/controller/factory/statefulset_test.go	Updated test to expect FailureThreshold of 10 in startup probe

Poem

A probe with patience, now set to ten,
Waits for the cluster to rise again.
Fewer false alarms, more startup grace,
Etcd awakens at its own pace.
In code we trust, with thresholds new,
The cluster starts—success in view!

[!WARNING] There were issues while running some tools. Please review the errors and either fix the tool's configuration or disable the tool if it's a critical failure.

🔧 golangci-lint (1.64.8)

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Reviewing files that changed from the base of the PR and between b4ad1f7dbad6a5c98bf358dfacfebf329a684c4c and 74c603ca2c2b167b5760ec995667281ed92771d7.

📒 Files selected for processing (2)

• internal/controller/factory/statefulset.go (1 hunks)
• internal/controller/factory/statefulset_test.go (1 hunks)

🚧 Files skipped from review as they are similar to previous changes (1)

• internal/controller/factory/statefulset.go

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🔇 Additional comments (1)

internal/controller/factory/statefulset_test.go (1)

220-220: LGTM! Test correctly reflects the increased startup probe failure threshold.

The change appropriately updates the test expectation to match the new default startup probe configuration. This allows 50 seconds (10 × 5s) for etcd startup instead of the previous 15 seconds, which aligns perfectly with the PR objectives. The change is properly isolated to only the default startup probe while maintaining original thresholds for readiness/liveness probes and user-provided custom probes.

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