hi/cheers
...sometimes its a bit tricky to upgrade - / till "kill the system" till "get out of range" nerves / and sometimes upgrading automatic "flowes" with "just prashing Enter" /
i know about people staying always at the oldest working Version Linux/Plesk, just upgrading importand system parts/mods.
Its the thing for people like us, they/we want to try the newest Versions at all. Figuring out
(after releases to work with)
the last bugs for the {/i really mean that/} awesome Plesk Coder (really awesome!)
they can work with our requests/failes/ they are close to every time and make the "flow" for automatic upgrade´s "user" friendly till perfect / live = at the same time we try/
i just think that i dont know that, sometimes its just a feeling when "playing" "upgrading" /
but for real that would make sense, when they are live checking the code/engine close to the user by upgrading. /
so that at one moment upgrading failed for days and at the next day/moment all works fine with the same sequence´s as before.
I am not a Coder/Programmer just a "User" managing and learning by "using" at my self (since plesk 9?10? cant remember), but i think i can see a "tiny" bit of the Power in Plesk´s Code/Engine - The Code lives

The Engine is a Great "beast" /
// The upgrade from Ubuntu 14 to 16 and
* is now really easy (fresh backups on your favorite FTPplace/ for big Backups / just to get safe)
you can migrate a hole Server backup from an Onyx/Ubuntu14 System without problems in a fresh Onyx/Ubuntu16 System.
/ just hit a few times Enter / when Ubuntu/System ask´s / by the upgrading process
the System asked for hold old, or get new configurations
just use the default settings (which the system already pretends in the moment you see)
step by step / when needed for someone / dont know why i write/cp that / and really dont know why so stupid-detailed
/ maybe usefull / seeing mistakes, pls -->catch me direct!
but ~ same it´s all described here from Plesk --->
https://docs.plesk.com/en-US/onyx/a...ver-administration/distupgrade-support.74627/
*should work for
- Debian 6 to Debian 7
- Debian 7 to Debian 8
- Ubuntu 12.04 to Ubuntu 14.04
- Ubuntu 14.04 to Ubuntu 16.04
(for 14 to 16 it works i can say that)
----------------------------------------------------------------------------------------------------------------------------------
for easy automatic upgrade flow //
importand to do this step//
----------------------------------------------------------------------------------------------------------------------------------
{1}
Run the pre-upgrade script. The pre-upgrade script is named =
distupgrade.helper.<OS.old-OS.new>_pre.sh
and it is located in the
/usr/local/psa/bin directory.
check dir for your OS/name
This are OS namend commands for the uprade from
Ubuntu 14.04 to 16.04 OS with UpToDate Onyx - of course...
SSH via =
sudo su change to "root" by Enter your pw for the sudo user / or type sudo at each command
cd /usr/local/psa/bin
root@yourserver~#
cd /usr/local/psa/bin
sh distupgrade.helper.ubt14-ubt16.x64.sh
root@yourserver /usr/local/psa/bin~#
sh distupgrade.helper.ubt14-ubt16.x64.sh
---------------------------------------------------------------------------------------------------------------------------------
{2}
after running the
distupgrade.helper.<OS.old-OS.new>_pre.sh script
just Enter this command
do-release-upgrade
root@yourserver /usr/local/psa/bin~#
do-release-upgrade
/its equial in which folder you hit the command
same like
root@yourserver~# do-release-upgrade
or in home folder / whatever / yfikyans
------------------------------------------------------------------------------------------------------------------------------------
upgrading takes a while // remember at this ** for the default settings by the upgrade process.
**
by the upgrading process the System asked a few times for hold old, or get new configurations
just use the default settings (which the system already pretends in the moment you see)
------------------------------------------------------------------------------------------------------------------------------------
{3}
when release upgrade is ready / i think the Server wants to reboot / all is done /
run the post-upgrade script.
distupgrade.helper.<OS.old-OS.new>_post.sh
its located in /usr/local/psa/bin
cd /usr/local/psa/bin
root@yourserver~# /usr/local/psa/bin
check dir for your OS
sh distupgrade.helper.ubt14-ubt16.x64_post.sh
root@yourserver~# sh distupgrade.helper.ubt14-ubt16.x64_post.sh
--------------------------------------------------------------------------------------
done / should be
After the post-upgrade script finishes, Plesk should be up and running.
You can check the upgrade log /var/log/plesk/install/plesk-distupgrade.log for detailed information about the upgrade.
------------------------------------------------------------------------------------------------------
source:
https://docs.plesk.com/en-US/onyx/a...ver-administration/distupgrade-support.74627/
/// Ubuntu 16.04 looks totally overloaded i think / for secure?!best?! use i think its bedder to kick much parts after "well done" upgrade from ubuntu to dump / checking what i dont know / our datacenter is offline till Monday ....