The globus-connect-server session update command updates the current login session by allowing you to log into one or all of your linked identities. You may need to run this command in order to perform certain globus-connect-server commands to manage on a high assurance storage gateway or one of its related collections, or to manage other parts of an endpoint if you’ve not authentication with Globus Auth in a long while.
You can either reauthenticate all identities by passing the --all command-line option, or provide a list of identities that you wish to reauthenticate. Each identity in the list may be provided as either the UUID of the Globus Auth identity (this is displayed in the output of globus-connect-server session show) or the username property of the Globus Auth identity (also showed in the show output).
When you run this command, it will either display a URL to log in with auth, or open your web browser to the authentication page. After completing the requested authentications, if you followed the link manually, paste the Native App Authorization Code value into the terminal to complete the login.