✨Dask backend: Enable /metrics endpoint for scraping with prometheus

[sanderegg]

What do these changes do?

This PR enables the /metrics endpoint on the dask subsystem. I.e. both the dask-scheduler and the dask-sidecar(s) do provide that endpoint.

Related issue/s

How to test

make build up-prod
# go to the dask-scheduler entrypoint, i.e. http://127.0.0.1:8787/metrics
# go to the dask-sidecar entrypoint, i.e. http://127.0.0.1:8788/metrics

Dev Checklist

• No ENV changes or I properly updated ENV (read the instruction)

DevOps Checklist

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (4f136a0) 87.3% compared to head (28ea6f3) 66.1%.

Additional details and impacted files

@@            Coverage Diff            @@
##           master   #5264      +/-   ##
=========================================
- Coverage    87.3%   66.1%   -21.2%     
=========================================
  Files        1302     990     -312     
  Lines       53251   41597   -11654     
  Branches     1167     629     -538     
=========================================
- Hits        46495   27521   -18974     
- Misses       6507   13952    +7445     
+ Partials      249     124     -125     

Flag	Coverage Δ
integrationtests	51.9% <ø> (-13.2%)	⬇️
unittests	82.5% <ø> (-2.6%)	⬇️

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see 634 files with indirect coverage changes

[sonarcloud]

Quality Gate passed

Kudos, no new issues were introduced!

0 New issues
0 Security Hotspots
No data about Coverage
No data about Duplication

See analysis details on SonarCloud