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Add link to AlwaysPullImages admission controller

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Qiming Teng
2017-09-12 14:20:07 +08:00
committed by Andrew Chen
parent 855556c1f7
commit 34df90be81
1 changed files with 7 additions and 4 deletions
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docs/concepts/containers/images.md
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@@ -19,10 +19,13 @@ The `image` property of a container supports the same syntax as the `docker` com
## Updating Images
The default pull policy is `IfNotPresent` which causes the Kubelet to not
pull an image if it already exists. If you would like to always force a pull
you must set a pull image policy of `Always` or specify a `:latest` tag on
your image.
The default pull policy is `IfNotPresent` which causes the Kubelet to skip
pulling an image if it already exists. If you would like to always force a pull,
you can do one of the following:
- set the `imagePullPolicy` of the container to `Always`;
- use `:latest` as the tag for the image to use;
- enable the [AllwaysPullImages](/docs/admin/admission-controllers/#alwayspullimages) admission controller.
If you did not specify tag of your image, it will be assumed as `:latest`, with
pull image policy of `Always` correspondingly.