Symptom
After removing a username from the command line via 'no username' command, the user remains in software and when the user tries to delete the user again they get an error that indicates the user does not exist, even though they can still login with the deleted users credentials
N9K(config)# no username testuser
--CLI accepts the removal of the username ---
+ testuser still appears in the show run
N9K#show user-account
user:admin
this user account has no expiry date
roles:network-admin
user:testuser <<==== still there even after 'no username' command
this user account has no expiry date
roles:network-operator
+ attempt to remove the user again with this error:
N9Kconfig)# no username testuser
user:testuser not present
+ Can still log in with the removed users credentials
Workaround
Option 1: Removing the user using bash:
1.) Enable feature bash to be able to access the Linux Kernel on the Nexus 9K:
N9K(config)# feature bash-shell
2.) Drop down into the bash prompt to access the Linux Kernel
N9K# run bash
bash-4.2$
3.) Log in as root to set yourself up to make changes to the users:
N9K# run bash
bash-4.2$ sudo su
-- confirm you are root --
bash-4.2# whoami
root
4.) Delete the user you do not want
bash-4.2# userdel testuser
5.) Drop out of the bash prompt
bash-4.2# exit
exit
bash-4.2$ exit
exit
5.) Confirm the user is deleted using the #show user-account command in regular NXOS CLI
Option 2:
write erase and reload of the chassis
Further Problem Description
The issue seems to be that sometimes the 'no username' command does not completely remove the username from all of the necessary filesystems that it needs, so there may be a 'stuck' condition where the username is incomplete in software and on the filesystem(s) on the back end.
