[Samba] Failover DC did not work when Main DC failed

[Kris Lou]

Unless it's _not_ a global catalog.  Check your SRV records again, there
should be corresponding "_gc" records (similar to "_ldap") for each DC.

So, based upon the link/graphic I posted earlier:
* either your 2nd DC isn't being returned as a part of DNS lookups
* or that 2nd DC isn't responding to queries for authentication
* or the client isn't storing/retrieving the 2nd DC's availability for
future lookups
** could be related to DNS? storage via registry-equivalents? no idea here,
but putting it as "client side"

FWIW, I checked my file server (winbind, not sssd):
* checked the logonserver (which DC it was authenticating against)
* stopped samba on that DC
* checked logonserver again -- and it had switched to a different one.  So
4.10 Louis winbind works (for me).

Kris Lou
klou at themusiclink.net


On Sat, Feb 1, 2020 at 8:23 AM Paul Littlefield via samba <
samba at lists.samba.org> wrote:

> On 01/02/2020 15:10, Rowland penny via samba wrote:
> > Not really, all Samba AD DC's are global catalogs ;-)
>
> Ah, OK... so we don't need to worry about that then?
>
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