cluster: check vm.min_free_kbytes

[nexustar]

What problem does this PR solve?

What is changed and how it works?

Check List

Tests

• Unit test
• Integration test
• Manual test (add detailed scripts or steps below)
• No code

Code changes

• Has exported function/method change
• Has exported variable/fields change
• Has interface methods change
• Has persistent data change

Side effects

• Possible performance regression
• Increased code complexity
• Breaking backward compatibility

Related changes

• Need to cherry-pick to the release branch
• Need to update the documentation

Release notes:

NONE

[ti-chi-bot]

[REVIEW NOTIFICATION]

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[codecov-commenter]

Codecov Report

Attention: 20 lines in your changes are missing coverage. Please review.

Comparison is base (8fe14ca) 56.24% compared to head (e8bbae6) 45.28%. Report is 100 commits behind head on master.

:exclamation: Current head e8bbae6 differs from pull request most recent head f6f27f8. Consider uploading reports for the commit f6f27f8 to get more accurate results

Files	Patch %	Lines
pkg/cluster/operation/check.go	0.00%	18 Missing :warning:
pkg/cluster/task/check.go	0.00%	2 Missing :warning:

Additional details and impacted files

@@             Coverage Diff             @@
##           master    #2179       +/-   ##
===========================================
- Coverage   56.24%   45.28%   -10.95%     
===========================================
  Files         318      317        -1     
  Lines       33452    33457        +5     
===========================================
- Hits        18812    15151     -3661     
- Misses      12399    16282     +3883     
+ Partials     2241     2024      -217     

Flag	Coverage Δ
cluster	36.19% <0.00%> (-8.88%)	:arrow_down:
dm	26.00% <0.00%> (-0.06%)	:arrow_down:
tiup	16.01% <ø> (ø)
unittest	?

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[ti-chi-bot[bot]]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: srstack Once this PR has been reviewed and has the lgtm label, please assign kaaaaaaang for approval. For more information see the Kubernetes Code Review Process.

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[ti-chi-bot[bot]]

[LGTM Timeline notifier]

Timeline:

• 2023-08-13 13:27:51.011467668 +0000 UTC m=+464835.560483640: :ballot_box_with_check: agreed by srstack.