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Description

Inserting Docker records into the CMDB with varying case but the same text succeeds, but upon re-insertion, the data is dropped. The CMDB Identification engine does not properly reconcile the string case when data is reinserted into the database.

For more information about Discovery and Docker, see Docker Virtualization in the product documentation at https://docs.servicenow.com/bundle/istanbul-it-operations-management/page/product/discovery/concept/c-docker-virtualization.html.

Steps to Reproduce

  1. Log into the Docker machine.
  2. Execute docker images.
  3. Select any repository and tag and copy the Image ID.
    Ensure that the tag is not <None>.
  4. Copy the tag name.
  5. If the tag name is latest, the new tag name should be Latest.
  6. Execute docker tag <Image ID> Repository:<newTagName>.
  7. Create more than one duplicate tag.
  8. Execute docker images.
    You should see the new tag and the old tag in the table.
  9. Run Discovery on the Docker machine again.
    Note that only one tag appears in the CMDB. After Discovery is complete and you navigate to Docker > Image tag for the image ID, both tags in different cases should appear in the CMDB.

Workaround

There is no known workaround for this issue. If you are able to upgrade, review the Fixed In field below to determine the versions that have a permanent fix. You can also subscribe to this known error article (click Subscribe button at the top of the article) to receive notifications when more information is available about this issue.


Related Problem: PRB707461

Seen In

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Associated Community Threads

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Article Information

Last Updated:2016-11-23 08:56:29
Published:2016-11-21