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@olevski olevski released this 26 Jul 12:15
· 923 commits to master since this release
0.8.4
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Learn about vigilant mode.

This version of Renku introduces the ability to use persistent volumes for user sessions. This is optional and can be enabled in the values file for the helm chart. In addition to enabling this feature users have the ability to select the storage class used by the persistent volumes. We strongly recommend that a storage class with a Delete reclaim policy is used, otherwise persistent volumes from all user sessions will keep accumulating.

Also, unlike previous versions, with 0.8.4 the amount of disk storage will be strongly enforced, regardless of whether persistent volumes are used or not. With persistent volumes users will simply run out of space. However, when persistent volumes are not used, going over the amount of storage that a user has requested when starting their session will result in eviction of the k8s pod that runs the session and termination of the session. Therefore, admins are advised to review and set proper options for disk sizes in the notebooks.serverOptions portion of the values file.

Improvements

  • UI: Add banner advertising new version to logged-in users and various improvements in the new canary deployment itself.
  • Notbooks: Ability to use persistent volumes for user sessions.

Bug Fixes

  • CI/CD: CI action entrypoint typo (3858df0)
  • Acceptance Tests: flaky FreeTextDatasetSearchSpec (a872504)
  • Acceptance Tests: retry when EOF occurs on the Rest Client (#2211) (e81a212)
  • Acceptance Tests: Wait for the dataset search results (#2210) (132ec8b)

Features

  • CI/CD: parametrize rancher API endpoint (46a5155)

Individual components

For changes to individual components, please check:

Upgrading from 0.8.3

When upgrading from 0.8.3 the following steps should be taken based on whether you:

Use persistent volumes:

  1. Edit the notebooks.userSessionPersistentVolumes section of the values.yaml file changing the enabled flag to true and selecting a storage class to be used with every user session. It is strongly recommended to select a storage class with a Delete retention policy to avoid the accumulation of persistent volumes with every session launch.
  2. Review and modify (if needed) the disk request options in the values.yaml file.
  3. Review and modify (if needed) the the server defaults in the values.yaml file. These will be used if a specific server options is omitted in the request to create a session and should be compatible with any matching values in the serverOptions section. It also allows an administrator to omit an option from the selection menu that is defined in the serverOptions section and have renku always use the default from the serverDefaults section.

Do not use persistent volumes:

  1. Review and modify (if needed) the disk request options in the values.yaml file. Please note that if a user consumes more disk space than they requested (or more than what is set in the serverDefaults of the values file) then the user's session will be evicted. This is necessary because if a user consumes a lot of space on the node where their session is scheduled k8s starts to evict user sessions on that node regardless of whether they are using a lot of disk space or not. This sometimes results in the eviction of multiple sessions and not the session that is consuming the most storage resources.
  2. Review and modify (if needed) the the server defaults in the values.yaml file. These will be used if a specific server options is omitted in the request to create a session and should be compatible with any matching values in the serverOptions section. It also allows an administrator to omit an option from the selection menu that is defined in the serverOptions section and have renku always use the default from the serverDefaults section.
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