Текущая версия chrony собрана без поддержки MS-SNTP, необходимой для клиентов Samba, в режиме DC. ntpsigndsocket directory This directive specifies the location of the Samba ntp_signd socket when it is running as a Domain Controller (DC). If chronyd is compiled with this feature, responses to MS-SNTP clients will be signed by the smbd daemon. Note that MS-SNTP requests are not authenticated and any client that is allowed to access the server by the allow directive, or the allow command in chronyc, can get an MS-SNTP response signed with a trust account’s password and try to crack the password in a brute-force attack. Access to the server should be carefully controlled. An example of the directive is: ntpsigndsocket /var/lib/samba/ntp_signd Кроме опции, нужно определиться, в какой пакет упаковать каталог /var/lib/samba/ntp_signd. Видимо, в samba, но их у нас две. Но это уже не проблема chrony.
Включено, начиная с 3.3-alt2%ubt