New install of infrastructure and only license key in YML

I just installed the NR Infra agent in Ubuntu and when I run a:

cat /etc/newrelic-infra.yml

all it returns is the license key. Is that normal? I did the install via the NR wizard.

Yes, the basic setup only requires a valid license key in the infrastructure agent config file, all other settings have default values.
You can see all available params for the config file in this template