User can add multiple "KDC" parameters within [realms] section on krb5.conf that xenapp probe refers.
Here is an example of krb5.conf that multiple KDCs are set on.
[libdefaults]
default_realm = ATHENA.MIT.EDU
dns_lookup_kdc = true
dns_lookup_realm = false
[realms]
ATHENA.MIT.EDU = {
kdc = kerberos.mit.edu
kdc = kerberos-1.mit.edu
kdc = kerberos-2.mit.edu
admin_server = kerberos.mit.edu
master_kdc = kerberos.mit.edu
}
EXAMPLE.COM = {
kdc = kerberos.example.com
kdc = kerberos-1.example.com
admin_server = kerberos.example.com
}
[domain_realm]
mit.edu = ATHENA.MIT.EDU
[capaths]
ATHENA.MIT.EDU = {
EXAMPLE.COM = .
}
EXAMPLE.COM = {
ATHENA.MIT.EDU = .
}
See the detail below link.
MIT Kerberos Documentation > krb5.conf