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

Paul Littlefield info at paully.co.uk
Thu Feb 6 11:44:19 UTC 2020

On 03/02/2020 18:49, Kris Lou via samba wrote:
> From windows:
> echo %logonserver%


> nltest /dsgetdc:<domain>

Address: \\
Dom Guid: bla bla bla
The command completed successfully.

>  From a *nix domain member (i.e. client, not DC):
> wbinfo --getdcname=<domain>
> winbind --ping-dc

wbinfo --getdcname=MYDOMAIN

wbinfo --ping-dc
checking the NETLOGON for domain[mydomain] dc connection to "dc3.mydomain.com" succeeded

> That's probably expected.  I don't think nslookup can query multiple DNS
> servers at once.  But is DC4 actually responding to DNS queries?  Compare
> "nslookup <domain> <DC3-ip>" and "nslookup <domain> <DC4-ip>", which will
> hopefully tell you that both DC3/DC4 are capable of answering queries.

Yep, DC4 is responding to queries.

> This DNS timeout on "standard traffic" is probably what you need to figure
> out then.


> And I hate to ask, but are both samba and bind set to automatically start
> after boot (on the DC's)?



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