[Samba] kerberos ticket expired

[Adam Williams]

> I have tried kinit -r 7d -l 7d admin to keep the ticket last longer, but it
> ignored my flags and use default 1 day ticket life time. 

As a point of interest - most KDCs enforce a maximum ticket life time,
and kinit can only request up-to that life time; requests for a longer
life will just get 'bumped down'.  Every KDC I've met liked 24hrs as a 
ticket life (one can, of course, always renew).