cluster: Persistently disable THP

[dveeden]

What problem does this PR solve?

Close None

What is changed and how it works?

Check List

Tests

• Manual test (add detailed scripts or steps below)

tiup cluster check topology.yaml --apply

And then check /etc/default/grub:

...
GRUB_CMDLINE_LINUX="crashkernel=1G-4G:192M,4G-64G:256M,64G-:512M resume=/dev/mapper/rl-swap rd.lvm.lv=rl/root rd.lvm.lv=rl/swap transparent_hugepage=never"
...

Related changes

• tiup: Update THP docs docs#20070

Release notes:

TiUP Cluster Check now disables THP persistently

[codecov-commenter]

Codecov Report

❌ Patch coverage is 0% with 5 lines in your changes missing coverage. Please review.
✅ Project coverage is 42.35%. Comparing base (73f2c7a) to head (c51dc96).
⚠️ Report is 2 commits behind head on master.

Files with missing lines	Patch %	Lines
pkg/cluster/manager/check.go	0.00%	5 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #2498      +/-   ##
==========================================
+ Coverage   38.33%   42.35%   +4.02%     
==========================================
  Files         424      424              
  Lines       47078    47082       +4     
==========================================
+ Hits        18047    19940    +1893     
+ Misses      26620    24451    -2169     
- Partials     2411     2691     +280     

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[dveeden]

/retest

[ti-chi-bot]

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[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2025-02-05 02:30:36.448513277 +0000 UTC m=+238907.980925270: ☑️ agreed by breezewish.
• 2026-04-10 01:43:53.598686477 +0000 UTC m=+1093438.804046533: ✖️🔁 reset by xhebox.

[ti-chi-bot]

New changes are detected. LGTM label has been removed.