new motherboard

NOIDSR

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Mar 1, 2021
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Hello, I am planning to replace my motherboard and CPU that runs the latest PM into the later version with the latest CPU socket 1700. Was just wondering besides BIOS adjustments and individual VM hardware reconfiguration do I need to reconfigure anything in PM itself if I just move and attach all the same SSD/NVME/HDD to the new motherboard? Thanks.
 
You will most likely need to rename your NICs in /etc/network/interfaces and redo the PCI passthrough of all VMs. I also would disable autostart in case you are using PCI passthrough, so you are not passing through the wrong devices.
 
ok, thank you. While I understand hardware in each existing VM must be reconfigured, not sure how to change NIC. Being a newbie in linux i'd like to understand where this can be done. Thanks.
 
You probably won't be able to access the webUI or SSH after replacing the mainboard, so you need to use the local console (keyboard + monitor attached) but you want that anyway to edit your BIOS/UEFI to check that all required features are enabled (virtualization features like Vt-d and so on).
After logging in as root you can check what your NICs are named by running ip addr. Write down your NICs name.
Then backup your old network config with cp /etc/network/interfaces /etc/network/interfaces.backup.
Edit the network config file and replace the old NIC names with the new NIC names: nano /etc/network/interfaces. You can save changes with CTRL+X, Y.
Then restart your network with systemctl restart networking and check if you can access the webUI.
 
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After I replaced the motherboard, network card is not working. I checked ip addr and results are attached. Have no idea what number do I need from there. Also Attached screen shot of what I see in interfaces. I dont see any NIC that I should replace....What I am missing here?
Thanks
 

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Rename all "eno1" in "/etc/network/interfaces" to "enp3s0" and do a systemctl restart networking
 
That worked well and now I have access via the web. However every time I add a new PCI card it changes NIC and have to edit again in interfaces. Is it normal?

Since I replaced my CPU from i7 10700 to i7 12700 I want to increase a core count on one of my VMs but I find very confusing info on the net about the best practice.
Specifically, I wanted to increase a number of cores to my existing MACOS VM (runing together with other 2 VMs at the same time) that until now it was running on i7-10700. Now since I have 4 more cores and 4 more threads with the new CPU what core/socket number is best to set for this VM alone assuming that I need to utilize extra resources I have got with the new CPU?

Since simultinuosly I run Ubuntu server, windows 10 and MAC OS my old CPU setting was:
MACOS 1 socket 10 cores, 10 VCPUs Penryn
Windows 10 1 socket 2 cores, 2 VCPUs Host
Ubuntu server 1 socket 2 cores, 2 VCPUs Host
2 cores left for Proxmox

Thanks!
 
Last edited:
Updated:


That worked well and now I have access via the web. However every time I add a new PCI card it changes NIC and have to edit again in interfaces. Is it normal?

Since I replaced my CPU from i7 10700 to i7 12700 I want to increase a core count on one of my VMs but I find very confusing info on the net about the best practice.
Specifically, I wanted to increase a number of cores to my existing MACOS VM (runing together with other 2 VMs at the same time) that until now it was running on i7-10700. Now since I have 4 more cores and 4 more threads with the new CPU what core/socket number is best to set for this VM alone assuming that I need to utilize extra resources I have got with the new CPU?

Since simultinuosly I run Ubuntu server, windows 10 and MAC OS my old CPU setting was:
MACOS 1 socket 10 cores, 10 VCPUs Penryn
Windows 10 1 socket 2 cores, 2 VCPUs Host
Ubuntu server 1 socket 2 cores, 2 VCPUs Host
2 cores left for Proxmox

Thanks!
 

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