Bug ID 1757341: Restnoded restarting in a loop with "initgroups extra group not found" in /var/log/restnoded/restnoded.log

Last Modified: Jun 19, 2025

Affected Product(s):
BIG-IP TMOS(all modules)

Known Affected Versions:
17.1.0, 17.1.0.1, 17.1.0.2, 17.1.0.3, 17.1.1, 17.1.1.1, 17.1.1.2, 17.1.1.3, 17.1.1.4, 17.1.2, 17.1.2.1, 17.1.2.2

Opened: Dec 02, 2024

Severity: 3-Major

Symptoms

You may notice that the REST API is unavailable, and the restnoded process is stuck in restart loop. The log file /var/log/restnoded/restnoded.log includes the message "Error: initgroups extra group not found", and that same error message can also be seen when starting restnoded manually

Impact

The REST API is unavailable, restnoded continuously restarts.

Conditions

This can be caused by the presense of excessively long lines (of around 4,000 characters or more, with thousands of usernames), at any point in the /etc/group file, prior to the line with the restnoded line.

Workaround

Move the group with the excessively long line to the end of the file (At a minimum, move the restnoded group above the long line)

Fix Information

None

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips