[Samba] Samba4 - global catalog (GC) cannot be contacted using Windows 7 RSAT

[Alfonso Conner]

Hi Rowland,

Just a curious question.
Since the origin of my AD comes from PDC. If I were to try and do a
classicupgrade, using same IP, same hostname, same realm, will my windows
pc have login issues?

Regards

On Mon, Jul 22, 2019 at 5:04 PM Alfonso Conner <c1581634 at gmail.com> wrote:

> Hi Rowland,
>
> Noted with thanks.
>
> Regards
>
> On Mon, Jul 22, 2019 at 4:31 PM Rowland penny via samba <
> samba at lists.samba.org> wrote:
>
>> On 22/07/2019 09:23, Alfonso Conner wrote:
>> > Hi Rowland,
>> >
>> > In fact currently in my test environment using the same version of OS
>> > 6.10 and Samba 4.8.5.
>> > I ran 'netstat -plaunt | egrep "ntp|bind|named|samba|?mbd"', I have
>> > :::3268, :::3269, I do not see 0.0.0.0:3268 <http://0.0.0.0:3268> and
>> > 0.0.0.03269.
>> > While I use a Windows PC join to my test domain, I have no issues with
>> GC.
>> >
>> > Not sure how the GC problem can happen but seems to me it looks like a
>> > sometimes thing.
>> > Would the chances of getting be lower if were to use a higher version
>> > of OS and Samba? =)
>> Possibly, but I do not use Centos, so I do not really know :-(
>> >
>> > Now that I have quite a number of Windows PC under this AD, hope you
>> > can correct me if I were to use the below steps:
>> > I referred from Samba wiki
>> > Example to remove DC1 from AD
>> > 1) Transfer FSMO to DC2
>> > 2) Demote DC1
>> > 3) stop DC1 samba service
>> > 4) Disconnect DC1 IP
>> > 5) Configure new_DC1 IP
>> > 6) Join new_DC1 to AD
>> > 7) Transfer FSMO from DC2 to the new_DC1
>> >
>> > I am considering to use CentOS 7.6.1810 with Samba 4.10.6 for my
>> > new_DC1. Prefer to use back the same hostname and IP address.
>>
>> you might prefer to use the same name & IP, but experience has shown
>> this isn't a good idea, apart from that, the above is a reasonable way
>> to upgrade.
>>
>> Rowland
>>
>>
>>
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>