Failed configuring to DSN for Cloudflaer

Hi friends

I have a dsn domain in cloudflaer that I want to associate to a gitlab within a kubernetes, I have followed the configuration steps that the page indicates, but I cannot get the service up through https, but with http yes, some will know what else I have to configure? I already modified the

external_url “

##! Note: During installation/upgrades, the value of the environment variable
##! EXTERNAL_URL will be used to populate/replace this value.
##! On AWS EC2 instances, we also attempt to fetch the public hostname/IP
##! address from AWS. For more details, see:
 external_url ""

with my company’s domain, but it still doesn’t work, I would like to know if I should apply something to the machine where Kubernets runs or directly to the container.