fix issue75: seg fault and listen volcano.sock fail

[linuxfhy]

No description provided.

[volcano-sh-bot]

Welcome @linuxfhy!

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[volcano-sh-bot]

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[linuxfhy]

/assign @william-wang

[linuxfhy]

related issue: #75

[Copilot]

Pull Request Overview

This pull request addresses issue75 by improving error handling around the socket listen setup and adjusting the client usage in the allocation process.

• In the Serve function, the code now attempts to remove the existing socket file and retry listening when net.Listen fails.
• In the Allocate function, the invocation of util.UseClient has been relocated to ensure proper initialization before proceeding with candidate pod evaluation.

Comments suppressed due to low confidence (1)

pkg/plugin/nvidia/server.go:192

• Consider verifying that the error is due to an existing socket (e.g., EADDRINUSE) before removing the file to avoid inadvertently deleting an unrelated file.

log.Printf("Listen sock fail and retry for '%s': %s", m.resourceName, err)

[Copilot]

Ensure the relocation of util.UseClient here is intentional and that omitting its call at the original location does not lead to any side effects or missed initialization.

Suggested change

util.UseClient(m.kubeInteractor.clientset)