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Re: [Samba] DNS replication only working one way




Here is the thing, DC2 is slated to be demoted and retired (it is based on
TKL, that has been updated to samba 4.7.3 using Louis' repository) and then
I was planning on building a new DC2 to replace it using a clean install of
stretch and Louis' repository.  But I wanted to make sure that replication
was working properly before I demoted and retired DC2.

I had a thought on the way in to work this morning, what if I made a DC3?
If all replication worked properly between DC1 and DC3, I could safely
demote and retire DC2, and rebuild it.

So that's what I did first thing this morning.  DC1 and DC3 are replicating
DNS and AD objects just fine!

I will be demoting DC2 and rebuilding it.

Thanks again for your help folks!


On Wed, Dec 13, 2017 at 2:44 AM, Rowland Penny via samba <
samba@xxxxxxxxxxxxxxx> wrote:

> On Tue, 12 Dec 2017 20:51:24 -0600
> Taylor Hammerling <thammerling@xxxxxxxxxxxx> wrote:
>
> > I ran thru the wikipage you linked to, and the results were as they
> > should be
> >
> > # record 1
> > dn: CN=NTDS
> > Settings,CN=DC1,CN=Servers,CN=Default-First-Site-Name,CN=
> Sites,CN=Configuration,DC=tcsbasys,DC=com
> > objectGUID: 0d5ebcac-88d7-44fb-a830-ec3eacb6757f
> >
> > # record 2
> > dn: CN=NTDS
> > Settings,CN=DC2,CN=Servers,CN=Default-First-Site-Name,CN=
> Sites,CN=Configuration,DC=tcsbasys,DC=com
> > objectGUID: 7da1efbb-3b68-4249-ab03-e09c3ffc0d1a
> >
> > # returned 2 records
> > # 2 entries
> > # 0 referrals
> > root@dc1:~# host -t CNAME 0d5ebcac-88d7-44fb-a830-ec3eacb6757f._
> > msdcs.tcsbasys.com
> > 0d5ebcac-88d7-44fb-a830-ec3eacb6757f._msdcs.tcsbasys.com is an alias
> > for DC1.tcsbasys.com.
> >
> > root@dc1:~# host -t CNAME 7da1efbb-3b68-4249-ab03-e09c3ffc0d1a._
> > msdcs.tcsbasys.com
> > 7da1efbb-3b68-4249-ab03-e09c3ffc0d1a._msdcs.tcsbasys.com is an alias
> > for dc2.tcsbasys.com.
> > root@dc1:~#
> >
>
> Right that rules that out ;-)
>
> Is there anything else of the old DC left in AD ?
> Could 'samba-tool samba-tool domain demote
> --remove-other-dead-server=REMOVE_OTHER_DEAD_SERVER' be of use here ?
> Otherwise you may have to find and remove the old DC data manually.
>
> Rowland
>
>
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-- 
*Taylor Hammerling* |  *IT Manager*
2800 Laura Lane | Middleton, WI 53562
*O *(608) 669-9070 *| C *(608) 512-7849
tcsbasys.com | ubiquistat.com
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