[Samba] Samba 4.8.2

[Micha Ballmann]

Is it possible to Mix Samba 4.8.2 with Samba 4.7.7?

I have three domain controller (up to 10000 users) running on Samba 4.7.7. 

I want to kill all samba processes of Dc1 and do all necessary steps for an upgrade to version 4.8.2. Dc2 and Dc2 still running and providing. 

After a reboot of the upgraded server, (Dc1) is the replication still working? Gpos are working?

I cant shutdown all domain controller for the same time, and upgrade them "offline" step by step!

Best regards 
Micha

Am 18. Mai 2018 11:53:36 MESZ schrieb "L.P.H. van Belle via samba" <samba at lists.samba.org>:
>Hi Stefan, 
>
>Good question here. 
>I'll explain, i'll reply to the list also, this info can also be handy
>for others .
>
>I always follow this approach for my DC upgrades. 
>Start with the DC with FSMO roles then the others. 
>
>1) backup. 
>	I use virtual machines for the DC's, so i down all my DC's and take an
>offline snapshot. 
>	If you dont have virtual machines, i suggest the following. 
>	Run :  sudo smbd -b | egrep "/var|etc"
>
>	Stop the DC with FSMO and backup every folder you see in the output. 
>	I use the follow on an other location. 
>
>###############################################
>#!/bin/bash 
>
>systemctl stop samba-ad-dc bind9
># Samba
>for x in $(sudo smbd -b | egrep "/var|etc" | awk '{ print $NF }')
>do
>    # Filebackup
>    if [ -f $x ]
>    then
>        cp $x{,.backup-$(date +%F)}
>    elif [ -d $x ]
>    # Folder
>    then
>        cp -r $x{,.backup-$(date +%F)}
>    fi
>done
>
>
># Bind
>if [ -d /etc/bind ] || [ -d /etc/bind9 ]
>then
>    # Folder
>    if [ -d /etc/bind ]
>    then
>        cp -r /etc/bind{,.backup-$(date +%F)}
>    else
>        cp -r /etc/bind9{,.backup-$(date +%F)}
>    fi
>Fi
>systemctl start samba-ad-dc bind9
># now wait 5 sec, and run samba DB tool check. 
>sleep 5
>samba-tool dbcheck
>samba-tool dbcheck --cross-nc
># error try to fix them before the upgrade or take you chances and to
>it after. 
># Now, you choose.
># a) before, the + is, a fixed database if all ok, the - is, if there
>is an error.
>#    you can do more harm. 
># b) after, the + is, you have more chance that the newer samba has
>better ways to fix things.
>#    but the - is, you hcan have more problem, if the db had problem
>before the upgrade.
># so think wisely if you detect error, and if you dont know, mail the
>list. 
>###############################################
>
>
>2 GET ant DONT install the needed package to upgrade.
>In debian : apt-get update && apt-get upgrade -dy  ( download and end
>it ) 
>Then upgrade: apt-get upgrade
>If the are package changes, like new added packages then run : apt-get
>dist-upgrade 
>Or run a manual apt-get install packagenames... 
>
>3) The upgrade itself.  
>If you run a basic config, then you problemy wont have any problem.
>If you have any problem while upgrading then you didnt read the
>changelogs before the upgrade ;-)... 
>
>Now do the following, look at your screen, you should be able to seen
>which parameter is given the problem.
>
>If you dont see it run : samba-tool testparm 
>
>Still no go, then go here :
>http://downloads.van-belle.nl/samba4/Upgrade-info.txt and 
>go through this file. I contains almost all info you need to know to
>find your problem. 
>Including the links to wiki and samba historical changelogs.
>Now look at the smb.conf changes, and review you smb.conf. 
>If your uable to find it, mail the list, you did your best..  ;-) 
>
>4) After the upgrade.
>I cleanup my samba logs, and reboot the server and i review my logs.
>Samba logs, syslog, daemonlog.
>Even while this should not be needed, i do this so i can make a good
>check of my logs 
>And its also check if you server boots correctly. 
>
>
>I hope this helps someone, more questions, mail the list.
>
>Greetz, 
>
>Louis
>Ps. Its no problem to ask question to me personaly, but i preffer the
>list, so everbody learns from it.
>
>
>> -----Oorspronkelijk bericht-----
>> Van: Stefan G. Weichinger [mailto:lists at xunil.at] 
>> Verzonden: vrijdag 18 mei 2018 10:04
>> Aan: L.P.H. van Belle
>> Onderwerp: Samba 4.8.2
>> 
>> 
>> hi, Louis,
>> 
>> I just read through your email to the samba-ml regarding the 
>> 4.8.2 upgrade
>> 
>> You write "your upgrade will probably end in an error" and something
>> around "correct your smb.conf", but I don't get what changes 
>> to make ...
>> 
>> 2nd: it should be a defensive way to approach this to upgrade one of
>2
>> DCs first, right?
>> 
>> thanks, regards, Stefan
>> 
>> 
>> 
>> 
>
>
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