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docs: highlight the new scale down delay flag

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toast-gear 2022-04-28 16:04:16 +01:00
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@ -489,9 +489,14 @@ A `RunnerDeployment` or `RunnerSet` can scale the number of runners between `min
#### Anti-Flapping Configuration
For both pull driven or webhook driven scaling an anti-flapping implementation is included, by default a runner won't be scaled down within 10 minutes of it having been scaled up. This delay is configurable by including the attribute `scaleDownDelaySecondsAfterScaleOut:` in a `HorizontalRunnerAutoscaler` kind's `spec:`.
For both pull driven or webhook driven scaling an anti-flapping implementation is included, by default a runner won't be scaled down within 10 minutes of it having been scaled up.
This configuration has the final say on if a runner can be scaled down or not regardless of the chosen scaling method. Depending on your requirements, you may want to consider adjusting this by setting the `scaleDownDelaySecondsAfterScaleOut:` attribute.
This anti-flap configuration also has the final say on if a runner can be scaled down or not regardless of the chosen scaling method.
This delay is configurable via 2 methods:
1. By setting a new default via the controller's `--default-scale-down-delay` flag
2. By setting by setting the attribute `scaleDownDelaySecondsAfterScaleOut:` in a `HorizontalRunnerAutoscaler` kind's `spec:`.
Below is a complete basic example of one of the pull driven scaling metrics.