Comment 3 for bug 1734225

Thanks for this report.

I can confirm bionic and artful have this fixed:
    debian)
        CTDB_SERVICE_SMB=${CTDB_SERVICE_SMB:-smbd}
        CTDB_SERVICE_NMB=${CTDB_SERVICE_NMB:-nmbd}

But not xenial or trusty, which still use "samba" as the fallback name.