What are USERNAME and CLUSTER

[ak77-prime]

Issue in ./help/cloud-guide/test/debug.md

Please verify the instructions here: ssh [email protected] is unfamiliar and doesn't seem to appear anywhere else in the documentation

To set up an SSH tunnel to a Staging or Production environment:

Open a terminal.

Clean up all SSH sessions for each web node of the cluster.

ssh [email protected] 'rm /run/platform/USERNAME/xdebug.sock'
Set up the SSH tunnel for Xdebug for each web node of the cluster.

ssh -R /run/platform/USERNAME/xdebug.sock:localhost:9000 -N [email protected]

Also, it needs to be made clearer what USERNAME and CLUSTER refer to, e.g., in the Staging environment, the URL to access the Origin directly (even though it's disabled by default) is
https://mcstaging.ridersdeal.com.c.am5tm22yxzfj4.dev.ent.magento.cloud/ - notice that there needs to be a .dev inserted after CLUSTER, ie., CLUSTER.dev.ent.magento.cloud