/var/lib/cobbler/snippets/redhat_register is in maas-provision-common 2.2.2-0ubuntu4.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 | # begin Red Hat management server registration
#if $redhat_management_type != "off" and $redhat_management_key != ""
mkdir -p /usr/share/rhn/
#if $redhat_management_type == "site"
#set $mycert_file = "RHN-ORG-TRUSTED-SSL-CERT"
#set $mycert = "/usr/share/rhn/" + $mycert_file
wget http://$redhat_management_server/pub/RHN-ORG-TRUSTED-SSL-CERT -O $mycert
perl -npe 's/RHNS-CA-CERT/$mycert_file/g' -i /etc/sysconfig/rhn/*
#end if
#if $redhat_management_type == "hosted"
#set $mycert = "/usr/share/rhn/RHNS-CA-CERT"
#end if
#set $endpoint = "https://%s/XMLRPC" % $redhat_management_server
rhnreg_ks --serverUrl=$endpoint --sslCACert=$mycert --activationkey=$redhat_management_key
#else
# not configured to register to any Red Hat management server (ok)
#end if
# end Red Hat management server registration
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