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Modify SchedulerQueueingHints #43427

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Oct 12, 2023
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Original file line number Diff line number Diff line change
@@ -186,7 +186,7 @@ For a reference to old feature gates that are removed, please refer to
| `SELinuxMountReadWriteOncePod` | `false` | Alpha | 1.25 | 1.26 |
| `SELinuxMountReadWriteOncePod` | `false` | Beta | 1.27 | 1.27 |
| `SELinuxMountReadWriteOncePod` | `true` | Beta | 1.28 | |
| `SchedulerQueueingHints` | `false` | Alpha | 1.28 | |
| `SchedulerQueueingHints` | `true` | Beta | 1.28 | |
| `SecurityContextDeny` | `false` | Alpha | 1.27 | |
| `ServiceNodePortStaticSubrange` | `false` | Alpha | 1.27 | 1.27 |
| `ServiceNodePortStaticSubrange` | `true` | Beta | 1.28 | |
@@ -701,8 +701,11 @@ Each feature gate is designed for enabling/disabling a specific feature:
- `SELinuxMountReadWriteOncePod`: Speeds up container startup by allowing kubelet to mount volumes
for a Pod directly with the correct SELinux label instead of changing each file on the volumes
recursively. The initial implementation focused on ReadWriteOncePod volumes.
- `SchedulerQueueingHints`: Enables the scheduler's _queueing hints_ enhancement,
- `SchedulerQueueingHints`: Enables [the scheduler's _queueing hints_ enhancement](https://github.com/kubernetes/enhancements/blob/master/keps/sig-scheduling/4247-queueinghint/README.md),
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which benefits to reduce the useless requeueing.
The scheduler retries scheduling pods if something changes in the cluster that could make the pod scheduled.
Queueing hints are internal signals that allow the scheduler to filter the changes in the cluster
that are relevant to the unscheduled pod, based on previous scheduling attempts.
- `SeccompDefault`: Enables the use of `RuntimeDefault` as the default seccomp profile
for all workloads.
The seccomp profile is specified in the `securityContext` of a Pod and/or a Container.