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F5051 - F5 Data-Group Not Found

Agent error code #F5051 indicates that the internal data-group named in the Knocknoc backend does not exist in the configured partition on the F5 BIG-IP. The device returned HTTP 404 Not Found.

Knocknoc does not create the data-group; an administrator must create it (and the iRule that references it) ahead of time. The agent only manages the records inside an existing data-group.

Common causes include:

  • A typo in the Data-group name in the Knocknoc ACL configuration
  • The data-group exists in a different partition than the one configured (default Common)
  • The data-group was renamed or deleted on the BIG-IP

Steps to Resolve

Confirm the Data-Group Name and Partition

  1. In the BIG-IP Configuration utility, go to Local Traffic > iRules > Data Group List
  2. Note the exact name and partition of the internal data-group your iRule consults
  3. In the Knocknoc ACL configuration, set Data-group name and the backend Partition to match exactly

Create the Data-Group if Missing

  1. Create an internal data-group of type Address in the target partition
  2. Reference it from the iRule that gates access
  3. Save and retry in Knocknoc
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