[Samba] Questions about 2n dc and samba update

[Trenta sis]

Hi,

a last question. after adding second dc I understand that we have to execute

#samba-tool dbcheck --cross-ncs
#samba-tool dbcheck --cross-ncs --fix

Correct?

This also will update actual server with 4.4.x and will fix? can
generate any issue?

Or will not update this cahnges to other DC and only will be fixed
when an update to 4.10.7 and then we can execute:

#samba-tool dbcheck --cross-ncs
#samba-tool dbcheck --cross-ncs --fix

Best practices about this steps, is a production server and we need to
know correct steps and order to ensure no downtime (if possible)

Thanks

Missatge de Trenta sis <trenta.sis at gmail.com> del dia dj., 5 de set.
2019 a les 12:32:
>
> Thanks Rowland!!!
>
> Missatge de Trenta sis <trenta.sis at gmail.com> del dia dj., 5 de set.
> 2019 a les 11:52:
> >
> > Hi,
> >
> > Thanks for your information about DNS config.
> > About second server and update, I understand that First I have to
> > transfer role to new added, demote old, and then rejoin and transfer
> > fsmo roles to source server, right?
> > My question is related with demote and transfer FSMO roles, this task
> > are stable and works correct? I'm not clear to demote main server, now
> > with 4.4.5 because no rolback direct  in case of failure...
> >
> > Our actual 4.4.5 has multiple cpu problems, added 4vcpus but is an old
> > version with singe process... My question is if adding second server
> > and if will generate many cpu usage to replicate, all day or only
> > during initial sync... to 4.10.7
> >
> > thanks!
> >
> >
> > Missatge de Trenta sis <trenta.sis at gmail.com> del dia dj., 5 de set.
> > 2019 a les 10:37:
> > >
> > > Hi,
> > >
> > > I have to upgrade 2 different samba AD DC (2 domains) from 4.4.5 to 4.10.7
> > >
> > > First is a single server and updaded with in-place upgrade from 4.4.5
> > > to 4.10.7 and all perfect
> > >
> > > Second environment I need to add a second dc and also upgrade existing
> > > server, and I have some question about how to do this:
> > > - join second domain server with 4.10.7
> > > - then make in place upgrade on existing server dc1?
> > >
> > > reading wiki I'm not sure if rejoin is needed or not, as I have
> > > described recently I have update an existing 4.4.5 (also fileserver)
> > > with in-place method and all weems to work...
> > >
> > > About second domain controller I have question bout dns config,
> > > reading wiki amb not clear about what is the suggested
> > > /etc/resolv.conf on both dc
> > >
> > > dc1
> > > dc1 ipdc1
> > > dc2 ipdc2
> > >
> > > dc2
> > > dc2 ipdc2
> > > dc1 ipdc1
> > >
> > >
> > > or
> > > dc2
> > > dc1 ipdc1
> > > dc2 ipdc2
> > >
> > > dc1
> > > dc2 ipdc2
> > > dc1 ipdc1
> > >
> > > Thanks!