v18 Upgrade

[Benjamin Williams]

I have a handful of Linux based 3CX instances (all on-prem at the customer location) that I am looking to upgrade to v18 within the next 1-2 weeks.

Here is my concern - all of the 3CX instances that I am managing we're all stood up using the non-3CX Debian installer (this was fully driven based on the hardware that I was using, I was unable to get the official 3CX Debian version to install; the install would get to the very end and then just bomb out/stall - this occurred multiple times using different 3CX installers on different hardware). Note: I have been able to use the official 3CX Debian based on v18 on 'new' installs and it seems to work without issue.

My question is this: is it a sure fire guarantee that the v18 automated upgrade will fail on these systems? Please note that the Debian version that was used for these installs was the 'base' version only (I did add SSH services to it but that is all). There are no other 3rd party add-ons and or features enabled on any of these systems.

What is the best way to handle this type of scenario?

 

[SteveITS]

3CX is going to tell you it's unsupported and they recommend backing up, installing, and restoring during the install, to get to a supported config.

You may want to have this page handy: https://www.3cx.com/blog/docs/v18-upgrade-aborted-errors/.

 

[NickD_3CX]

Is it guaranteed to fail? No.
Is it likely to fail? Yes.

What I would do in your shoes?
Take a backup of each machine and download it locally.
Then attempt the upgrade via the Management Console.
In most cases, if the upgrade fails it will roll back. There are a few rare cases where the machine thoughay not be able to recover.

In the last case, you will need to redeploy the V18 ISO from scratch and restore the backup to restore functionality.

If the upgrade fails but rolls back to V16, you'll still need to do the same, but you will have the luxury of scheduling it for later if required.

To be honest though, you should possibly consider redeploying all of them from scratch using the 3CX ISO to be fully within the 'supported' category.

 

[Benjamin Williams]

Thank you for all of the feedback, truly appreciated!