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Merge pull request #24904 from derekwaynecarr/hugepages-downward-api

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Add documentation for downward API hugepages
This commit is contained in:
Kubernetes Prow Robot
2020-12-01 08:58:50 -08:00
committed by GitHub
parent 53def8da4f 6b4ab17902
commit 5307e266bb
2 changed files with 9 additions and 5 deletions
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content/en/docs/reference/command-line-tools-reference/feature-gates.md
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@@ -97,6 +97,7 @@ different Kubernetes components.
| `DevicePlugins` | `true` | Beta | 1.10 | |
| `DisableAcceleratorUsageMetrics` | `false` | Alpha | 1.19 | 1.19 |
| `DisableAcceleratorUsageMetrics` | `true` | Beta | 1.20 | 1.22 |
| `DownwardAPIHugePages` | `false` | Alpha | 1.20 | |
| `DryRun` | `false` | Alpha | 1.12 | 1.12 |
| `DryRun` | `true` | Beta | 1.13 | |
| `DynamicKubeletConfig` | `false` | Alpha | 1.4 | 1.10 |
@@ -465,6 +466,7 @@ Each feature gate is designed for enabling/disabling a specific feature:
based resource provisioning on nodes.
- `DefaultPodTopologySpread`: Enables the use of `PodTopologySpread` scheduling plugin to do
[default spreading](/docs/concepts/workloads/pods/pod-topology-spread-constraints/#internal-default-constraints).
- `DownwardAPIHugePages`: Enables usage of hugepages in downward API.
- `DryRun`: Enable server-side [dry run](/docs/reference/using-api/api-concepts/#dry-run) requests
so that validation, merging, and mutation can be tested without committing.
- `DynamicAuditing`(*deprecated*): Used to enable dynamic auditing before v1.19.
content/en/docs/tasks/inject-data-application/downward-api-volume-expose-pod-information.md
+7 -5
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@@ -202,16 +202,18 @@ variables and `downwardAPI` volumes:
* Information available via `fieldRef`:
* `metadata.name` - the pod's name
* `metadata.namespace` - the pod's namespace
* `metadata.uid` - the pod's UID, available since v1.8.0-alpha.2
* `metadata.labels['<KEY>']` - the value of the pod's label `<KEY>` (for example, `metadata.labels['mylabel']`); available in Kubernetes 1.9+
* `metadata.annotations['<KEY>']` - the value of the pod's annotation `<KEY>` (for example, `metadata.annotations['myannotation']`); available in Kubernetes 1.9+
* `metadata.uid` - the pod's UID
* `metadata.labels['<KEY>']` - the value of the pod's label `<KEY>` (for example, `metadata.labels['mylabel']`)
* `metadata.annotations['<KEY>']` - the value of the pod's annotation `<KEY>` (for example, `metadata.annotations['myannotation']`)
* Information available via `resourceFieldRef`:
* A Container's CPU limit
* A Container's CPU request
* A Container's memory limit
* A Container's memory request
* A Container's ephemeral-storage limit, available since v1.8.0-beta.0
* A Container's ephemeral-storage request, available since v1.8.0-beta.0
* A Container's hugepages limit (providing that the `DownwardAPIHugePages` [feature gate](/docs/reference/command-line-tools-reference/feature-gates/) is enabled)
* A Container's hugepages request (providing that the `DownwardAPIHugePages` [feature gate](/docs/reference/command-line-tools-reference/feature-gates/) is enabled)
* A Container's ephemeral-storage limit
* A Container's ephemeral-storage request
In addition, the following information is available through
`downwardAPI` volume `fieldRef`: