fix: exporter and grafana are abnormal in prometheus

[srstack]

What problem does this PR solve?

close #1852

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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• nexustar

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[codecov-commenter]

Codecov Report

Merging #1853 (0945772) into master (762dd94) will decrease coverage by 0.08%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #1853      +/-   ##
==========================================
- Coverage   52.62%   52.53%   -0.08%     
==========================================
  Files         306      306              
  Lines       34986    34986              
==========================================
- Hits        18408    18379      -29     
- Misses      14418    14439      +21     
- Partials     2160     2168       +8     

Flag	Coverage Δ
cluster	40.84% <ø> (-0.08%)	⬇️
dm	24.55% <ø> (-0.04%)	⬇️
playground	12.79% <ø> (ø)
tiup	14.44% <ø> (-0.02%)	⬇️
unittest	21.26% <ø> (-0.01%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
pkg/cluster/api/pdapi.go	57.47% <0.00%> (-3.16%)	⬇️
pkg/repository/store/txn.go	56.91% <0.00%> (-2.13%)	⬇️
pkg/cluster/api/dmapi.go	59.88% <0.00%> (-1.74%)	⬇️
pkg/cluster/spec/tiflash.go	68.51% <0.00%> (-0.67%)	⬇️

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[nexustar]

instead of use tcp on all port probe, I think we had better use another job

[srstack]

instead of use tcp on all port probe, I think we had better use another job

cc

[nexustar]

/merge

[ti-chi-bot]

This pull request has been accepted and is ready to merge.

Commit hash: 0945772