How to establish a proper SSH connection

[yyy916]

I need help to create a VM with proper SSH connection so that the sshd is active when it starts. I keep missing out on the necessary Terraform config. Also, due to the fact that the template's setup is lost when run via Terraform, I can only add the authorized keys for ssh via sshkeys = <<EOF ....EOF . I see other variables like preprovision and ssh_host . I'm lost on which ones are not outdated. Can someone help me understand the other neccessities?