Add basic network log analysis to node:cluster-node-health-check slash command

[marty-power]

Add basic network log analysis to node:cluster-node-health-check slash command

What this PR does / why we need it:

Adds additional network logging analysis for node health check slash command.

Checklist:

• Subject and description added to both, commit and PR.
• Relevant issues have been referenced.
• This change includes docs.

Summary by CodeRabbit

• Documentation
  • Updated cluster node health-check documentation to include network log inspection procedures.
  • Added diagnostics for NetworkManager, OVN, OVS, CNI, iptables, and DNS errors across nodes.
  • Included network interface error diagnostics with verbose option support.
  • Expanded remediation guidance for network-related issues.

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[coderabbitai]

Walkthrough

Documentation update to cluster node health check command file, adding a dedicated network logs diagnostic section with code examples for inspecting NetworkManager, OVN, OVS, CNI, iptables, and DNS errors, along with expanded remediation guidance.

Changes

Cohort / File(s)	Summary
Network Log Diagnostics Documentation plugins/node/commands/cluster-node-health-check.md	Added new network logs inspection section including checks for NetworkManager, OVN, OVS, CNI, iptables/nftables, and DNS errors across nodes. Includes conditional verbose interface diagnostics, concrete example snippets, and expanded remediation guidance. Renumbered subsequent sections to accommodate new content.

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~10 minutes

• Verify accuracy of network diagnostic commands and output examples
• Confirm section numbering and cross-references are consistent throughout the document
• Review remediation guidance for completeness and correctness

Pre-merge checks and finishing touches

✅ Passed checks (7 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title accurately and specifically describes the main change: adding network log analysis functionality to the cluster-node-health-check command. It is clear, concise, and directly reflects the changeset.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
No Real People Names In Style References	✅ Passed	The pull request does not contain any references to real people by name in style references, example prompts, or instructions.
No Assumed Git Remote Names	✅ Passed	The pull request does not contain any git commands or hardcoded git remote names. The documentation focuses entirely on Kubernetes cluster node health checking.
Git Push Safety Rules	✅ Passed	The custom check for Git Push Safety Rules is not applicable to this pull request. The PR contains only documentation changes to a markdown file with no git operations or push instructions.
No Untrusted Mcp Servers	✅ Passed	This pull request only modifies documentation in a markdown file, adding guidance and examples for network log analysis in cluster node health checks. There are no npm packages, MCP server installations, or code introducing untrusted MCP servers.

✨ Finishing touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment

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[openshift-ci]

Hi @marty-power. Thanks for your PR.

I'm waiting for a github.com member to verify that this patch is reasonable to test. If it is, they should reply with /ok-to-test on its own line. Until that is done, I will not automatically test new commits in this PR, but the usual testing commands by org members will still work. Regular contributors should join the org to skip this step.

Once the patch is verified, the new status will be reflected by the ok-to-test label.

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[coderabbitai]

Actionable comments posted: 1

📜 Review details

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Review profile: CHILL

Plan: Pro

Cache: Disabled due to data retention organization setting

Knowledge base: Disabled due to data retention organization setting

📥 Commits

Reviewing files that changed from the base of the PR and between 46a84d8 and dc3974c.

📒 Files selected for processing (1)

• plugins/node/commands/cluster-node-health-check.md (10 hunks)

🔇 Additional comments (3)

plugins/node/commands/cluster-node-health-check.md (3)

19-19: LGTM: Documentation updates accurately reflect new network logs functionality.

The description updates at lines 19 and 29 correctly introduce the new network diagnostic capability without overstating scope.

Also applies to: 29-29

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341-341: LGTM: Section renumbering is consistent and correct throughout the document.

All subsequent sections were renumbered correctly after insertion of the new section 8:

• Section 9 (was 8): Kernel Parameters
• Section 10 (was 9): Recent Node Events
• Section 11 (was 10): Pod Status
• Section 12 (was 11): Node Labels
• Section 13 (was 12): Summary Report
• Section 14 (was 13): JSON Format

Also applies to: 431-431, 453-453, 480-480, 519-519, 546-546, 575-575

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706-726: LGTM: Example outputs and remediation guidance are comprehensive and consistent.

The new example network log errors (lines 706–726) and remediation section (lines 858–886) follow the document's established pattern for presenting issues with investigation steps and common causes.

Also applies to: 858-886

[theobarberbany]

/ok-to-test

[theobarberbany]

/lgtm

This command looks sufficiently complex / long that we should probably consider shipping bash scripts alongside it, rather than in the command definition.

If that's something you'd like to do I'm sure it would be welcome! :D

[openshift-ci]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: marty-power, theobarberbany

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