Users not able to login to AIX servers (4267530)

On an AIX servers some Unix enabled Active Directory users may not be able to login and the vastool status output reports the following warning.

"WARNING: 624 sys0 value max_logname doesn't allow all cached users to log in"

This is caused when the AIX systems parameter 'v_max_logname' is set to the default of 9 characters.

Please note that this is not a One Identity issue but an AIX configuration issue.

To check the 'v_max_logname' setting, run the following command.

# lsattr -El sys0 -a max_logname

To change the “max_logname” value run the following command

(In this example the limit is set to 32 characters. )

# chdev -l sys0 -a max_logname=’32’

After making this change the server will need to be rebooted as this is a change made to a Kernel parameter.

Ref: https://www.ibm.com/support/knowledgecenter/en/ssw_aix_71/com.ibm.aix.security/user_group_name_length.htm