The current status of a token server, as well as a list of the clients that are currently using tokens, can be requested from a client machine via the command line:
$ gurobi_cl --tokens
Example output:
Token server functioning normally.
Maximum allowed uses: 1, current: 1
Tokens currently in use...
Client HostName Client IP Address UserName ------------------------------------------------ ubuntu 127.0.0.1 dj
Found 1 active servers