samba - Jun 2015 - Samba4 Secondary DC as Backup DC (redundancy)

El 23/6/2015 8:11 p. m., "Rowland Penny" <rowlandpenny at
googlemail.com>
escribi?:
>
> On 23/06/15 18:58, Daniel Carrasco Mar?n wrote:
>>
>> Hi,
>>
>> I've sucessfull created a secondary DC using the wiki manual (
>> https://wiki.samba.org/index.php/Join_a_domain_as_a_DC), and is working
>> perfectly, user and groups are synced on both and I can use any of them
for
>> login using clients like Owncloud, Prosody, python scripts...
>>
>> Now my question is: ?how I can use that secondary DC as backup when the
>> main fails?.
>>
>> I've tried to disable the main AD daemon but clients don't try
to connet
to
>> secondary DC, then all fails...
>>
>> Greetings and Thanks!!
>
>
> OK, how do the clients get their ipaddress etc, is this by DHCP or do
they have static addresses ?
>
> If it is by DHCP, then the dhcp server needs to push out both DCs as
nameservers, if static, then each client needs to be set to use both DCs as
nameservers.
>
> The DCs need to be set to use each other as nameservers, falling back to
themselves in case of failure i.e. /etc/resolv.conf needs to be
this:
>
> search samdom.example.com
> nameserver 192.168.0.3
> nameserver 192.168.0.2
>
> Where 'samdom.example.com' is your domain name
> 192.168.0.3 is the other DC
> 192.168.0.2 is the DC this /etc/resolv.conf is on
>
> Swap the two nameserver on the other DC.
>
> Rowland
>
>
> --
> To unsubscribe from this list go to the following URL and read the
> instructions:  https://lists.samba.org/mailman/options/samba
I see. I'll take a look tomorrow.

I'm migrating an old samba domain, then for now i've clients with mixed
DHCP (ip by DHCP, but DNS is static).

Thanks!!

On 23/06/15 19:19, Daniel Carrasco Mar?n wrote:
>
>
> El 23/6/2015 8:11 p. m., "Rowland Penny" <rowlandpenny at
googlemail.com
> <mailto:rowlandpenny at googlemail.com>> escribi?:
> >
> > On 23/06/15 18:58, Daniel Carrasco Mar?n wrote:
> >>
> >> Hi,
> >>
> >> I've sucessfull created a secondary DC using the wiki manual (
> >> https://wiki.samba.org/index.php/Join_a_domain_as_a_DC), and is
working
> >> perfectly, user and groups are synced on both and I can use any of
> them for
> >> login using clients like Owncloud, Prosody, python scripts...
> >>
> >> Now my question is: ?how I can use that secondary DC as backup
when the
> >> main fails?.
> >>
> >> I've tried to disable the main AD daemon but clients don't
try to
> connet to
> >> secondary DC, then all fails...
> >>
> >> Greetings and Thanks!!
> >
> >
> > OK, how do the clients get their ipaddress etc, is this by DHCP or 
> do they have static addresses ?
> >
> > If it is by DHCP, then the dhcp server needs to push out both DCs as 
> nameservers, if static, then each client needs to be set to use both 
> DCs as nameservers.
> >
> > The DCs need to be set to use each other as nameservers, falling 
> back to themselves in case of failure i.e. /etc/resolv.conf needs to 
> be this:
> >
> > search samdom.example.com <http://samdom.example.com>
> > nameserver 192.168.0.3
> > nameserver 192.168.0.2
> >
> > Where 'samdom.example.com <http://samdom.example.com>'
is your
> domain name
> > 192.168.0.3 is the other DC
> > 192.168.0.2 is the DC this /etc/resolv.conf is on
> >
> > Swap the two nameserver on the other DC.
> >
> > Rowland
> >
> >
> > --
> > To unsubscribe from this list go to the following URL and read the
> > instructions: https://lists.samba.org/mailman/options/samba
>
> I see. I'll take a look tomorrow.
>
> I'm migrating an old samba domain, then for now i've clients with 
> mixed DHCP (ip by DHCP, but DNS is static).
>
> Thanks!!
>
It would probably be best to just set the hostname on the clients, then 
get the DHCP server to push out the domain name etc, you can if you 
wish, run a dhcp server on one of the samba4 AD DCs

Rowland

Porque
El 23/6/2015 8:23 p. m., "Rowland Penny" <rowlandpenny at
googlemail.com>
escribi?:
>
> On 23/06/15 19:19, Daniel Carrasco Mar?n wrote:
>>
>>
>> El 23/6/2015 8:11 p. m., "Rowland Penny" <rowlandpenny at
googlemail.com>
escribi?:
>> >
>> > On 23/06/15 18:58, Daniel Carrasco Mar?n wrote:
>> >>
>> >> Hi,
>> >>
>> >> I've sucessfull created a secondary DC using the wiki
manual (
>> >> https://wiki.samba.org/index.php/Join_a_domain_as_a_DC), and
is
working
>> >> perfectly, user and groups are synced on both and I can use
any of
them for
>> >> login using clients like Owncloud, Prosody, python scripts...
>> >>
>> >> Now my question is: ?how I can use that secondary DC as backup
when
the
>> >> main fails?.
>> >>
>> >> I've tried to disable the main AD daemon but clients
don't try to
connet to
>> >> secondary DC, then all fails...
>> >>
>> >> Greetings and Thanks!!
>> >
>> >
>> > OK, how do the clients get their ipaddress etc, is this by DHCP or
do
they have static addresses ?
>> >
>> > If it is by DHCP, then the dhcp server needs to push out both DCs
as
nameservers, if static, then each client needs to be set to use both DCs as
nameservers.
>> >
>> > The DCs need to be set to use each other as nameservers, falling
back
to themselves in case of failure i.e. /etc/resolv.conf needs to be
this:
>> >
>> > search samdom.example.com
>> > nameserver 192.168.0.3
>> > nameserver 192.168.0.2
>> >
>> > Where 'samdom.example.com' is your domain name
>> > 192.168.0.3 is the other DC
>> > 192.168.0.2 is the DC this /etc/resolv.conf is on
>> >
>> > Swap the two nameserver on the other DC.
>> >
>> > Rowland
>> >
>> >
>> > --
>> > To unsubscribe from this list go to the following URL and read the
>> > instructions:  https://lists.samba.org/mailman/options/samba
>>
>> I see. I'll take a look tomorrow.
>>
>> I'm migrating an old samba domain, then for now i've clients
with mixed
DHCP (ip by DHCP, but DNS is static).
>>
>> Thanks!!
>
>
> It would probably be best to just set the hostname on the clients, then
get the DHCP server to push out the domain name etc, you can if you wish,
run a dhcp server on one of the samba4 AD DCs
>
> Rowland
>
Thanks for the suggestion, but i'm using a proxy server as dhcp and for now
i don't want to change it.

Greetings!!