[Samba] Upgrade DC 4.5 -> 4.8, timings?

Rowland penny rpenny at samba.org
Wed Oct 2 12:52:58 UTC 2019

On 02/10/2019 13:42, L.P.H. van Belle via samba wrote:
> Well, if you want Rowland to hear us..
> You should have send this one to the list.  ;-)
You rang ;-)
> On the "which first" here there are different opinions.
Oh yes, there are most definitely different options.
> My opinion is, if you systems is running correctly,
> it does not matter if you start with the DC with FSMO or not.
> But Note, this is my opinion and base on my experience.
And mine
> I've always done the server with FSMO first, why? .. Ough..
> Thats something that goes back years, which i cant recall why..
> I also must say why this does not matter to me.
> If i start to upgrade my DC's, i follow these exact steps.
> - pick DC1.
> 1- clear logs.
> 2- reboot, check logs, fix everthing i see.
> 3- reboot, verify everything again, repeat above untill there are 0 errors (or warnings).
Yes, you must start with zero errors before the upgrade, garbage in, 
garbage out.
> 4- ok? Then
> 	5- down all of the AD-DC
> 	6- snapshot all AD-DC's
> 	7- start all AD-DC's
> 	( this take me about 3-5 min for all my DC's. )
> 8- And i start upgrading, one DC at at time.
> 9- If first DC is upgraded, goto 1- again.
> 10- if -1 checks ok, next server, if not goto 2-
> 	- If the first DC fails, i revert back to the first snapshot.
> 	  And find the source of the upgrade problem fix in in advance, then goto 1-
> 	- If the second DC fails, then that systems is off with its settings, goto 1- for DC2.
> And repeat per DC.
Sounds like a good plan to me ;-)


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