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Merge pull request #24885 from soltysh/cronjob_alpha

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Add information how to enable cronjob controller v2
This commit is contained in:
Kubernetes Prow Robot
2020-11-12 07:56:52 -08:00
committed by GitHub
parent 20546141c0 4f0068f333
commit 68898b09e9
2 changed files with 10 additions and 2 deletions
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content/en/docs/concepts/workloads/controllers/cron-jobs.md
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@@ -32,8 +32,6 @@ The name must be no longer than 52 characters. This is because the CronJob contr
append 11 characters to the job name provided and there is a constraint that the append 11 characters to the job name provided and there is a constraint that the
maximum length of a Job name is no more than 63 characters. maximum length of a Job name is no more than 63 characters.
<!-- body --> <!-- body -->
## CronJob ## CronJob
@@ -82,6 +80,14 @@ be down for the same period as the previous example (`08:29:00` to `10:21:00`,)
The CronJob is only responsible for creating Jobs that match its schedule, and The CronJob is only responsible for creating Jobs that match its schedule, and
the Job in turn is responsible for the management of the Pods it represents. the Job in turn is responsible for the management of the Pods it represents.
## New controller
There's an alternative implementation of the CronJob controller, available as an alpha feature since Kubernetes 1.20. To select version 2 of the CronJob controller, pass the following [feature gate](/docs/reference/command-line-tools-reference/feature-gates/) flag to the {{< glossary_tooltip term_id="kube-controller-manager" text="kube-controller-manager" >}}.
```
--feature-gates="CronJobControllerV2=true"
```
## {{% heading "whatsnext" %}} ## {{% heading "whatsnext" %}}
content/en/docs/reference/command-line-tools-reference/feature-gates.md
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@@ -83,6 +83,7 @@ different Kubernetes components.
| `CSIVolumeFSGroupPolicy` | `false` | Alpha | 1.19 | | | `CSIVolumeFSGroupPolicy` | `false` | Alpha | 1.19 | |
| `ConfigurableFSGroupPolicy` | `false` | Alpha | 1.18 | 1.19 | | `ConfigurableFSGroupPolicy` | `false` | Alpha | 1.18 | 1.19 |
| `ConfigurableFSGroupPolicy` | `true` | Beta | 1.20 | | | `ConfigurableFSGroupPolicy` | `true` | Beta | 1.20 | |
| `CronJobControllerV2` | `false` | Alpha | 1.20 | |
| `CustomCPUCFSQuotaPeriod` | `false` | Alpha | 1.12 | | | `CustomCPUCFSQuotaPeriod` | `false` | Alpha | 1.12 | |
| `CustomResourceDefaulting` | `false` | Alpha| 1.15 | 1.15 | | `CustomResourceDefaulting` | `false` | Alpha| 1.15 | 1.15 |
| `CustomResourceDefaulting` | `true` | Beta | 1.16 | | | `CustomResourceDefaulting` | `true` | Beta | 1.16 | |
@@ -402,6 +403,7 @@ Each feature gate is designed for enabling/disabling a specific feature:
Check [Service Account Token Volumes](https://git.k8s.io/community/contributors/design-proposals/storage/svcacct-token-volume-source.md) Check [Service Account Token Volumes](https://git.k8s.io/community/contributors/design-proposals/storage/svcacct-token-volume-source.md)
for more details. for more details.
- `ConfigurableFSGroupPolicy`: Allows user to configure volume permission change policy for fsGroups when mounting a volume in a Pod. See [Configure volume permission and ownership change policy for Pods](/docs/tasks/configure-pod-container/security-context/#configure-volume-permission-and-ownership-change-policy-for-pods) for more details. - `ConfigurableFSGroupPolicy`: Allows user to configure volume permission change policy for fsGroups when mounting a volume in a Pod. See [Configure volume permission and ownership change policy for Pods](/docs/tasks/configure-pod-container/security-context/#configure-volume-permission-and-ownership-change-policy-for-pods) for more details.
- `CronJobControllerV2`: Use an alternative implementation of the {{< glossary_tooltip text="CronJob" term_id="cronjob" >}} controller. Otherwise, version 1 of the same controller is selected. The version 2 controller provides experimental performance improvements.
- `CPUManager`: Enable container level CPU affinity support, see [CPU Management Policies](/docs/tasks/administer-cluster/cpu-management-policies/). - `CPUManager`: Enable container level CPU affinity support, see [CPU Management Policies](/docs/tasks/administer-cluster/cpu-management-policies/).
- `CRIContainerLogRotation`: Enable container log rotation for cri container runtime. - `CRIContainerLogRotation`: Enable container log rotation for cri container runtime.
- `CSIBlockVolume`: Enable external CSI volume drivers to support block storage. See the [`csi` raw block volume support](/docs/concepts/storage/volumes/#csi-raw-block-volume-support) documentation for more details. - `CSIBlockVolume`: Enable external CSI volume drivers to support block storage. See the [`csi` raw block volume support](/docs/concepts/storage/volumes/#csi-raw-block-volume-support) documentation for more details.