What is photon-machine login?
In the screenshot below, when starting the vc machine from the vmware esxi web, the system requires photon-machine login. What is this login?
you have installed the VCSA with IP address it seems. Please check the VC pnid.
run this command on VC.
/usr/lib/vmware-vmafd/bin/vmafd-cli get-pnid --server-name localhost
you need to provide root password to login. If you forgot the password, login to grub mode and reset the password.
When you don't use a FQDN to install vCSA and only an IP (which is not supported) a hostname cannot be assigned to the appliance. This in turn causes other issues down the line. If you want to do this "correctly" then you need to use an FQDN with internal DNS entries.