There's no current way from the UI, but if you're in the CLI, you can do the following:
For tracking of CLI user logins:
# last -10
(this shows the last 10 connections made to the server via CLI -> this is primarily the reason that I suggest to customers to not use root, but add new CLI users using "useradd" and then adding to sudoers list for better CLI tracking)
For tracking of AMP UI users:
You'll mainly be looking at the access_log in /var/log/httpd
and want to make sure that all users with access to the UI have their own login usernames
(if they don't, then you may want to add users into AMP Setup -> Users, and change the common 'admin' user's password or disable admin acct)
# tail -f /var/log/httpd/access_log | awk '{print $3}'
This yields the current users with currrnt activity on the UI
For a list of users in that existing log file:
# awk '{users[$3]++}END{for (a in users) print a|"sort -n"}' /var/log/httpd/access_log
Ex output:
# awk '{users[$3]++}END{for (a in users) print a|"sort -n"}' /var/log/httpd/access_log
-
admin
mac_test
pc_test
rgin
Sp7MsrrvWI
trex
(Where my actual user logins were admin, mac_test, pc_test, rgin, and trex. The hash looking username is used by VisualRF. And the '-' can be attributed to background apache processing, which includes login page prior to authentication.)