Migrating a proxmox virtual machine from v.7 to v4.4

[luferazth]

Hi guys, Hope you're good.
I wanted to ask about the migration process of virtual machines in proxmox 7 to proxmox 4.
I've been using proxmox for the last 2 months and There are some servers in proxmox 4 which i'd be nice that I have all together.
If you can give me a tip about how to proceed.
I have a ubuntu 14.04 server in proxmox 7. It has a couple of applications and I want it to be in proxmox 4 with the others so we can deploy a fast linux machine.

 

[Lukas Wagner]

Just so that I understand you correctly, you want to migrate VMs running on VE 7.x to a host running 4.4? I'm not sure if this is good idea. I'd suggest upgrading to a recent version of Proxmox VE first before you attempt any migrations.

 

[luferazth]

Just so that I understand you correctly, you want to migrate VMs running on VE 7.x to a host running 4.4? I'm not sure if this is good idea. I'd suggest upgrading to a recent version of Proxmox VE first before you attempt any migrations.

Hi Lukas, thanks for your answer. And yes, I want to migrate a virtual machine from a higher version to an old version. I want to try to join them so I have them all of them. Even if, something breaks, I don't mind, I'd like to do it.

 

[Lukas Wagner]

You could try it via Backup/Restore https://forum.proxmox.com/threads/migrate-vm-to-different-host.106486/ - however, I still highly advise against it, there might be a lot of breakage that you'll have to fix manually (VM config, etc.).

 

[fiona]

Hi,
as @l.wagner said, there are very likely settings in the configuration that the old host does not understand, so you'd need to manually adapt the configuration. But it's also a very bad idea from a security perspective: you won't get any updates for 4.4 and the server will be vulnerable!

Why not go in the other direction and move from old to new?

 

[luferazth]

Hi,
as @l.wagner said, there are very likely settings in the configuration that the old host does not understand, so you'd need to manually adapt the configuration. But it's also a very bad idea from a security perspective: you won't get any updates for 4.4 and the server will be vulnerable!

Why not go in the other direction and move from old to new?

yeah, actually it's not a good idea, but i'd like to try and configure and backup my VMs in the older configs.

 

[luferazth]

Hi,
as @l.wagner said, there are very likely settings in the configuration that the old host does not understand, so you'd need to manually adapt the configuration. But it's also a very bad idea from a security perspective: you won't get any updates for 4.4 and the server will be vulnerable!

Why not go in the other direction and move from old to new?

Hi Fiona, thanks for your reply.
I'd like to know how can I manually configure all the changes? Or should I get into the console and do it somewhere.
I'm kind of new to proxmox and I'm doing some experiments on virtualizations.

This is what I've done:
I created a VM in proxmox 7.2. A Ubuntu machine.
I converted it into a template. I turned the template into a backup.
Then, I transferred that "backup" into the proxmox 4.4.
I then restored it. And what happened was that, the machine needed a Disk image.
Ok, I then upload an ISO of Ubuntu. Which I thought it'd be ready but unfortunatly,
It just booted the Ubuntu Installation. It didn't preserve the configs and files I had in the ubuntu installed in to 7.2 proxmox.
What I would like is that I can have all the exact files and programs.
For example, I have a python 3.2 in ubuntu in proxmox 7.2
I'd like to have that machine in proxmox 4.4.
You've warned me that It's possible some configurations have to be done manually And I would like to know where I can do that configuration and what files I need in the 4.4 version.

thanks in advance for your help and reading me.

 

[fiona]

Hi Fiona, thanks for your reply.
I'd like to know how can I manually configure all the changes? Or should I get into the console and do it somewhere.
I'm kind of new to proxmox and I'm doing some experiments on virtualizations.

Well you need to get rid of all settings the old instance doesn't know about. I still think this is a very bad idea

This is what I've done:
I created a VM in proxmox 7.2. A Ubuntu machine.
I converted it into a template. I turned the template into a backup.
Then, I transferred that "backup" into the proxmox 4.4.
I then restored it. And what happened was that, the machine needed a Disk image.

The disk image should've been included in the backup? Well, maybe 4.4 isn't able to restore it at all.

Ok, I then upload an ISO of Ubuntu. Which I thought it'd be ready but unfortunatly,
It just booted the Ubuntu Installation. It didn't preserve the configs and files I had in the ubuntu installed in to 7.2 proxmox.
What I would like is that I can have all the exact files and programs.
For example, I have a python 3.2 in ubuntu in proxmox 7.2
I'd like to have that machine in proxmox 4.4.
You've warned me that It's possible some configurations have to be done manually And I would like to know where I can do that configuration and what files I need in the 4.4 version.

thanks in advance for your help and reading me.

I don't know what these settings are.