samba - Apr 2023 - Ubuntu update from 18.04 LTS to 22.04 LTS

On 21/04/2023 15:30, Benjamin Schmid via samba wrote:
> Hi,
> 
> I am running a Samba AD DC server on Ubuntu 18.04 LTS. Since 18.04 LTS 
> reaches its end of support, I'd like to upgrade it. Will an apt 
> dist-upgrade be a safe thing to do? Are there any caveats?
> 
> Ideally, I'd like to go to 22.04 LTS.
> 
> Thank you very much in advance,
> 
> Benjamin
> 
If I remember correctly, Ubuntu 18.04 has Samba 4.7.6 (all be it with 
security updates and anything else they backported)

Ubuntu 22.04 gets you 4.15.13 (if I understand correctly)

If you really want to get to a Samba supported version (and you should), 
jump ship to Debian 11 and use Samba from backports, which will get you 
4.17.7

Which ever way you go, I wouldn't want to upgrade Samba in the way that 
you are proposing, there is just too much that can go wrong. I would 
join a new computer as a DC, then demote the old one.

Rowland

On 21.04.23 17:08, Rowland Penny via samba wrote:
>
>
> On 21/04/2023 15:30, Benjamin Schmid via samba wrote:
>> Hi,
>>
>> I am running a Samba AD DC server on Ubuntu 18.04 LTS. Since 18.04 
>> LTS reaches its end of support, I'd like to upgrade it. Will an apt
>> dist-upgrade be a safe thing to do? Are there any caveats?
>>
>> Ideally, I'd like to go to 22.04 LTS.
>>
>> Thank you very much in advance,
>>
>> Benjamin
>>
>
> If I remember correctly, Ubuntu 18.04 has Samba 4.7.6 (all be it with 
> security updates and anything else they backported)
>
> Ubuntu 22.04 gets you 4.15.13 (if I understand correctly)
>
> If you really want to get to a Samba supported version (and you 
> should), jump ship to Debian 11 and use Samba from backports, which 
> will get you 4.17.7
>
> Which ever way you go, I wouldn't want to upgrade Samba in the way 
> that you are proposing, there is just too much that can go wrong. I 
> would join a new computer as a DC, then demote the old one.
>
> Rowland
>
>
Thanks for the quick reply.

I already have a secondary domain controller in the network. So I'd then 
basically follow
https://wiki.samba.org/index.php/Upgrading_a_Samba_AD_DC#Upgrade_A_DC_and_join_it_to_the_domain_again

I'd start with the secondary DC, demote it, update it, and join it 
again. If everything goes smooth, I'd do the same thing with the primary DC.

I'd re-join both with the same command, i.e. the command that I used to 
join the secondary DC in the first place, with all the options specified 
back then, right?

This should work for both upgrading the existing Ubuntu and installing a 
new Debian?

Thanks again, I really appreciate your help,

Bene