[ask]is anybody here having a trouble after upgrading RAM or HDD?

[El_makong]

as the title says,
is there anyone having some trouble after upgrading RAM?
as for the HDD,
after upgrading from 2 physical HDD to 4 HDD, from RAID 1 to RAID 10, is there any problem with proxmox or VMs?
if there is, please share the solution to me.how to fix that.thanks

 

[blackpaw]

What sort of problems? Random host crashes / lockups?

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[El_makong]

What sort of problems? Random host crashes / lockups?

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well,i am just asking.
because if i upgrade my host,i want to know how to prevent some trouble..
like vm not work,or anything else...
i have been thinking...if i move VMs to some backup site,then i move it back again,will it work?...i wonder...
maybe its like this..
HOST A(the 1st server).
move VMs to HOST B(the backup server)
then i upgrade the hardware on HOST A,after i finish, move data from HOST B back to HOST A...
will it get some trouble??

 

[blackpaw]

Well I presumed you meant you were having problems.

As to what could go wrong - how long is a piece of string?

Biggest potential issue would probably be faulty RAM. Once you installed it I'd be running an overnight memory test - I think there's an option in the proxmox boot menu for that.

 

[wahmed]

I believe you are asking, if you change your Proxmox Node hardware will all your VM still work. The short answer is, Yes. I have upgraded all of my nodes simply swapping the OS hdd to a brand new node and all worked perfectly. VMs really do not care what hardware platform you have as long as Proxmox cluster can start without issue. In Windows environment simply swapping OS hdd causes major issue, but Linux is very much adaptable. As blackpaw pointed out in the last post, you should do overnight burn-in test to make sure your hardware itself works ok. As long as your new node can be online, you can simply migrate VMs to it or restore VMs from backup. Even if you are restoring VMs from old backup which was done from old hardware, your VM will still work. You just might have to tweak the Virtual NIC to adapt the new hardware but other than that you should not have any problem.

 

[udo]

...You just might have to tweak the Virtual NIC to adapt the new hardware...

Hi,
I assume you mean the real hardware nic on the server - if this change, you must adapt /etc/udev/rules.d/70-persistent-net.rules on the host.
The VMs don't care about changes on the hosts - as long you have the same ressources (network-bridges, storages).

Udo

 

[wahmed]

Hi,
I assume you mean the real hardware nic on the server - if this change, you must adapt /etc/udev/rules.d/70-persistent-net.rules on the host.
The VMs don't care about changes on the hosts - as long you have the same ressources (network-bridges, storages).

Udo

Yes physical hardware is what i meant. When changing NIC without changing persistent rules as you have suggested OS renames ethX to next available number such as eth5, eth6 etc. which is pretty common thing. That can mess up the virtual nic since bridge like vmbr0 will longer work because eth0 has changed to eth2 or whatever. Most of us know all these, this is just to clarify new starters in Proxmox.

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[El_makong]

well,you guys...i ask about upgrading RAM or HDD...what does NIC have to do with this??