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[scheduler] Introduce controller-runtime manager and switch Shoot controller #4320

Merged
merged 19 commits into from
Aug 10, 2021
Merged

[scheduler] Introduce controller-runtime manager and switch Shoot controller #4320

merged 19 commits into from
Aug 10, 2021

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xrstf
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@xrstf xrstf commented Jul 6, 2021 •
edited by timuthy
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How to categorize this PR?

/area dev-productivity
/kind technical-debt

What this PR does / why we need it:
This PR replaces the home grown controller management and leader election in the gardener-scheduler with the controller-runtime Manager and its cohorts.

Which issue(s) this PR fixes:
Parts of #4251
Parts of #4380

Special notes for your reviewer:

Release note:

The following changes have been made incompatibly to the `GardenerSchedulerConfiguration`:
- The configuration key `server` has been refined into `healthProbes` and `metrics`. Note that both cannot be listening on the same port.
- The `CachedRuntimeClients` feature gate has been removed, objects are now always cached.
- `lockObjectName` was removed in favor of `resourceName`.
- `lockObjectNamespace` was removed in favor of `resourceNamespace`.

If you deploy Gardener with the provided Helm charts, note that the metrics endpoint for the Gardener-Scheduler is now exposed via a service on port `9090`.

@gardener-robot gardener-robot added area/dev-productivity Developer productivity related (how to improve development) kind/technical-debt Something that is only solved on the surface, but requires more (re)work to be done properly labels Jul 6, 2021
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@xrstf Thank you for your contribution.

@gardener-robot gardener-robot added needs/review size/L Denotes a PR that changes 100-499 lines, ignoring generated files. labels Jul 6, 2021
@xrstf xrstf force-pushed the scheduler-ctrlruntime-manager branch from 5fc4cc4 to 599e8cd Compare July 6, 2021 13:17
@gardener-robot gardener-robot added size/XL Denotes a PR that changes 500-999 lines, ignoring generated files. and removed size/L Denotes a PR that changes 100-499 lines, ignoring generated files. labels Jul 6, 2021
@xrstf xrstf force-pushed the scheduler-ctrlruntime-manager branch from f674a65 to 7e28c65 Compare July 6, 2021 20:06
@xrstf xrstf force-pushed the scheduler-ctrlruntime-manager branch from 7e28c65 to a54adf3 Compare July 12, 2021 13:46
rfranzke
rfranzke reviewed Jul 14, 2021
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/needs rebase
/invite @timebertt

@timuthy timuthy removed their assignment Aug 9, 2021
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timuthy commented Aug 10, 2021

@timebertt thanks a lot for your review. I addressed all your comments in the latest commit. Additionally, I added a health check which was missing before, so that the /healthz endpoint didn't work.

timebertt
timebertt reviewed Aug 10, 2021
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Awesome, this looks great now! 🥳
Two easy-to-fix comments left ;)

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timebertt
timebertt approved these changes Aug 10, 2021
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Very nice, thank you for continuing the PR and addressing all of my suggestions! :)
/lgtm

@timuthy timuthy added this to the v1.29 milestone Aug 10, 2021
@timuthy timuthy merged commit c8f7398 into gardener:master Aug 10, 2021
@timebertt timebertt mentioned this pull request Aug 18, 2021
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@timebertt timebertt mentioned this pull request Sep 11, 2021
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krgostev pushed a commit to krgostev/gardener that referenced this pull request Apr 21, 2022
@xrstf @timuthy
use ctrlruntime Manager to manage shoot scheduler controller (gardene…
a0e0a54 
…r#4320)

* use ctrlruntime Manager to manage shoot scheduler controller

* remove dead code

* make zap logger/logr code reusable

* nicer error trace

* deprecated SchedulerConfig.Server in favor of .HealthServer and .MetricsServer

* PR feedback

* remove metrics.go

* revendor

* PR feedback

* fix PR feedback

* update controlplane chart

* introduce pkg/logger.Format constants

* PR feedback

* Add default log format for Gardenlet

* Unify leader election options for GSched

* Use predicates for GSched

* Fix verify

* Address review comments

* Remove skip caller from logger

Co-authored-by: Tim Usner <tim.usner@sap.com>
krgostev pushed a commit to krgostev/gardener that referenced this pull request Jul 5, 2022
@xrstf @timuthy
use ctrlruntime Manager to manage shoot scheduler controller (gardene…
ddaa0aa 
…r#4320)

* use ctrlruntime Manager to manage shoot scheduler controller

* remove dead code

* make zap logger/logr code reusable

* nicer error trace

* deprecated SchedulerConfig.Server in favor of .HealthServer and .MetricsServer

* PR feedback

* remove metrics.go

* revendor

* PR feedback

* fix PR feedback

* update controlplane chart

* introduce pkg/logger.Format constants

* PR feedback

* Add default log format for Gardenlet

* Unify leader election options for GSched

* Use predicates for GSched

* Fix verify

* Address review comments

* Remove skip caller from logger

Co-authored-by: Tim Usner <tim.usner@sap.com>
@rfranzke rfranzke changed the title use ctrlruntime Manager to manage shoot scheduler controller Introduce controller-runtime manager in gardener-scheduler and switch Shoot controller Jul 19, 2022
@gardener-prow gardener-prow bot added size/XXL Denotes a PR that changes 1000+ lines, ignoring generated files. and removed size/XL Denotes a PR that changes 500-999 lines, ignoring generated files. labels Jul 19, 2022
@rfranzke rfranzke changed the title Introduce controller-runtime manager in gardener-scheduler and switch Shoot controller [scheduler] Introduce controller-runtime manager and switch Shoot controller Sep 23, 2022
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@timebertt timebertt timebertt approved these changes

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Labels
area/dev-productivity Developer productivity related (how to improve development) kind/technical-debt Something that is only solved on the surface, but requires more (re)work to be done properly size/XXL Denotes a PR that changes 1000+ lines, ignoring generated files.
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@xrstf @gardener-robot @rfranzke @timebertt @timuthy @AndreasBurger @gardener-robot-ci-1 @gardener-robot-ci-2 @gardener-robot-ci-3