[Samba] Migrate and Update (Samba 4.1 ADDC to Samba Latest Version on different Server).

[Juan Ignacio]

Awesome!!! thanks for your fast answer Rowland.

If I understand correctly what you suggest is to make a VM with the Version
of Debian  'Wheezy' i have on the Samba 4.1 OLD Server and start to upgrade
it, I suppose because of the libraries and packages.
Question:  In the new VM server with wheezy, before upgrading the distro do
I need to install the same version of Samba of the old server "4.1"?  That
installation was made from sources on the old one.

Thx.


El jue, 19 ago 2021 a las 13:38, Rowland Penny (<rpenny at samba.org>)
escribió:

> On Thu, 2021-08-19 at 12:14 -0300, Juan Ignacio wrote:
> > Hello friends, I have not asked anything around here for a long time.
> > But the time has come ... I must update the samba 4.1 server that I
> > have in production for 8 years.
>
> Samba is such fast moving, that I wouldn't recommend leaving it so long
> between updates
> >
> > Sorry Rowland for send the email to you i dont know if the samba list
> > is getting my emails.
>
> Seemingly it is.
>
> >
> >  Unfortunately I can't turn off the server or shut it down for a
> > while because I have several things that depend on it so I built a VM
> > with the latest version of Debian that is already ready to compile
> > and install the latest version of Samba.
>
> I think you may have to find time.
>
> >
> > I started by reading the following info.
> > https://wiki.samba.org/index.php/Updating_Samba#The_Update_Process
> >
> >
> https://wiki.samba.org/index.php/Back_up_and_Restoring_a_Samba_AD_DC#So_which_backup_should_I_use.3F
> >
> > But I realized that the backups of my server are made with the
> > information from the following script.
> > https://wiki.samba.org/index.php/Using_the_samba_backup_script
>
> That is the old bash script and I wouldn't depend on it, there was
> never a restore script for one thing.
>
> >
> > When I started to move the backups to the new server in the VM I read
> > the following and did not know how to continue. "Very important
> > notes: Never do a restore and a version change at the same time!
> > Always restore on a system using the same Samba version as the one
> > you created the backup on! Always Restore on a system with the same
> > IP and Hostname. Otherwise you will run into Kerberos and DNS issues.
> > Recommended: Restore on the same OS as you created the backup on. The
> > most important thing in a restore situation is to bring your system
> > back to a running state. Once everything is up and tested, you can
> > then do any required changes.”
> >
> > “Never try to make changes together with a restore! “
> >
> > Then I realized that I couldn't do what I was doing.
> >
> > I would like to know what is the best way to do what I want without
> > messing it up too much or without affecting my current configuration.
> >
> > Some important information.
> > Old Server: Machine Server.
> > OS: Debian 3.2.63-2 + deb7u1
>
> That doesn't look right, 3.6.23 looks like a version of Samba, but
> deb7u1 means 'Wheezy' to me.
>
> > Samba V: Version 4.1.0
> > Samba Provision: Samba AD DC.
> > State: Production
> > Backups: samba-backup script.
> > Members DC: 3
> > Using Samba Ldap for Web Apps authentications.
> > Using Wbind
> > Users: Around 1000
> >
> >
> > New Server: VM Server.
> > OS: Debian 10.10
> >
> > Samba V: Version 4.16 Latest Version Samba
>
> Do you mean 4.14.6 , 4.16 isn't even a twinkle in the Samba developers
> eyes yet :-D
>
> >
> > Provision needed: Samba AD DC.
> > State: Inactive, Testing Phase, RDY Backups.
> > Backups: VM backups if required.
> > Member DC: 3
> > Using Samba Ldap for Web Apps authentications.
> > Using Wbind
> >
> > Users: Around 1000
> >
> > Any help on how to start the process I appreciate.
>
> To be honest, I would add a new DC based on Debian wheezy, Once this is
> running correctly, distro upgrade to stretch, then distro upgrade to
> buster (provided you can get the iso's and it works). If you get this
> far and everything is working correctly, transfer the FSMO roles to the
> new DC. Then repeat for the other DC's.
>
> You can then use Louis's repo: https://apt.van-belle.nl/
>
> This will get you to the latest Samba version.
>
> Once you have upgraded, I suggest you do it more often, the difference
> between 4.1.x and 4.14.x is huge.
>
> Rowland
>
>
>