What is Proxmox?

A Type-1 hypervisor that provides similar functionality to Hyper-V, ESXi, XenServer, KVM, etc. The advantage is that it's open source.

Installation Environment

For proper usage, regardless of the environment, it must be installed on bare metal.

The minimum requirements are as follows:

CPU: x86 64bit cpu
*Intel VT/AMD-V capable CPU for full virtualization support

RAM: 1GB RAM + additional RAM needed for guests

Hard drive (anything that can store data)

At least 1 network card

In my case, I installed it on the following specs:

Lenovo ThinkPad E485 (Ryzen 3 2200U + 12GB RAM(8 + 4) + 1TB HDD)

As you can see from the specs, a hypervisor doesn't require particularly high specifications. A laptop sitting unused in your drawer is more than enough.

Installation Process

1. Download the ISO file from the official website.

2. Burn the ISO file to USB. (Use rufus on Windows, dd on Linux)

3. Plug the USB into the laptop and boot. When you see the following screen, select Install Proxmox VE.

4. Complete the installation by appropriately selecting the disk, a suitable password, appropriate timezone, and other appropriate options.

5. Connect to https://server-ip:8006 and log in. In my case, it was 192.168.100.113:8006.

Remove Subscription Repository and Add Non-Subscription Repository

# vim /etc/apt/sources.list.d/pve-enterprise.list

Comment out as follows:

# deb https://enterprise.proxmox.com/debian/pve buster pve-enterprise

Open the configuration file with the following command:

# vim /etc/apt/sources.list

Add the following content:

# no subscription
deb http://download.proxmox.com/debian/pve bullseye pve-no-subscription

Save and update:

# apt update && apt dist-upgrade -y

The web console shows a warning, but it doesn't matter since this is a development server!

Remove Subscription Notice Message on Login

# vim /usr/share/javascript/proxmox-widget-toolkit/proxmoxlib.js

Around line 513, find:

if (res == null || res == undefined ||
		!res || res.data.status.toLowerCase() ! = 'active') {

Replace with the following code:

if (false) {

Apply the changes with the following command:

# systemctl restart pveproxy.service

Sleep Mode Settings When Installed on a Laptop

If you're using Proxmox as a server, it would be inconvenient if it goes into sleep mode when you close the lid.

# vim /etc/systemd/logind.conf

Change the following line:

#HandleLidSwitch=suspend

To this:

HandleLidSwitch=ignore

Then run the following command:

# systemctl restart systemd-logind

Now closing the lid won't put the system into sleep mode.

Apply Dark Mode to Web Console

bash <(curl -s https://raw.githubusercontent.com/Weilbyte/PVEDiscordDark/master/PVEDiscordDark.sh ) install

Press F5 to reload and the theme will be applied!!

https://github.com/Weilbyte/PVEDiscordDark

AMD GPU Backlight Fix

In the /etc/default/grub file,

Add acpi_backlight=native to GRUB_CMDLINE_LINUX_DEFAULT

Run update-grub and then reboot

Future Plans

I plan to use it for building Kubernetes clusters, Jenkins CI/CD, private Docker Registry, and more. For now, I just want to appreciate having an on-premise server for test deployments and production deployments.