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9.4. Setting tag expirations

Image tags can be set to expire from a Quay.io repository at a chosen date and time using the tag expiration feature. This feature includes the following characteristics:

  • When an image tag expires, it is deleted from the repository. If it is the last tag for a specific image, the image is also set to be deleted.
  • Expiration is set on a per-tag basis. It is not set for a repository as a whole.
  • After a tag is expired or deleted, it is not immediately removed from the registry. This is contingent upon the allotted time designed in the time machine feature, which defines when the tag is permanently deleted, or garbage collected. By default, this value is set at 14 days, however the administrator can adjust this time to one of multiple options. Up until the point that garbage collection occurs, tags changes can be reverted.

Tag expiration can be set up in one of three ways:

  • By setting the quay.expires-after= label in the Dockerfile when the image is created. This sets a time to expire from when the image is built. This label only works for image manifests.
  • By setting the quay.expires-after= annotation label in the Dockerfile when the image is created. --annotation can be passed in for both image manifests and image indexes.

  • By selecting an expiration date on the Quay.io UI. For example:

    Change tag expiration under the Options icon or from the EXPIRES column

Setting tag expirations can help automate the cleanup of older or unused tags, helping to reduce storage space.

9.4.1. Setting tag expiration from a repository
링크 복사

Procedure

  1. On the Red Hat Quay v2 UI dashboard, click Repositories in the navigation pane.
  2. Click the name of a repository that has image tags.
  3. Click the menu kebab for an image and select Change expiration.
  4. Optional. Alternatively, you can bulk add expiration dates by clicking the box of multiple tags, and then select Actions Set expiration.
  5. In the Change Tags Expiration window, set an expiration date, specifying the day of the week, month, day of the month, and year. For example, Wednesday, November 15, 2023. Alternatively, you can click the calendar button and manually select the date.
  6. Set the time, for example, 2:30 PM.
  7. Click Change Expiration to confirm the date and time. The following notification is returned: Successfully set expiration for tag test to Nov 15, 2023, 2:26 PM.

  8. On the Red Hat Quay v2 UI Tags page, you can see when the tag is set to expire. For example:

    Red Hat Quay v2 UI tag expiration

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