how to create system user account and have it receive a kerberos ticket on boot

[Jelle de Jong]

Hello everybody,

1. How can I get machine that is joined as ipa-client recieve a kerberos 
ticket for a specific user without storing a password or having to 
manually login?

I want to replace this, manual systemd tricker that I currently run:
ExecStart=/usr/bin/bash -c "echo -n "secretpass" | kinit -r 14d -l 7d 
service(a)REALM.LAN"

I need the kerberos ticket because I use it to autenticate with 
smbclient -k to a samba serve to get access to files.

2. How can I make a system user like the admin account only without 
admin rights, but still available with id and getent tools. I need 
machine account that holds a kerberos ticket. A normal user shows up 
everywhere through LDAP, the admin user does not but is still available 
in sssd and other integrations.

Kind regards,

Jelle de Jong