Install Proxmox VE on Debian 12 Bookworm
The installation of a supported Proxmox VE server should be done via bare-metal ISO installer. In some cases it makes sense to install Proxmox VE on top of a running Debian Bookworm 64-bit, especially if you want a custom partition layout.
For this How-To any official Bookworm installation medium should work.
Install a standard Debian Bookworm (amd64)
Install a standard Debian Bookworm, for details consider the Debian installation guide, and configure a static IP.
Note: The Debian installer performs network configuration by IPv6 autoconfiguration and DHCP by default, if available. To force manual network configuration in the UEFI installer, press
E and add
netcfg/disable_autoconfig=true to the Linux command line. For the BIOS installer, select the
Help entry and start the installation by typing
installgui netcfg/disable_autoconfig=true. For further details, see the Debian installer documentation.
It is recommended to only install the "standard system utilities" and "SSH server" package selection, as Proxmox VE brings its own packages for QEMU and LXC. A desktop environment is not necessary.
Add an /etc/hosts entry for your IP address
The hostname of your machine must be resolvable via
This means that in
/etc/hosts you need one of the following entries for your hostname:
- 1 IPv4 or
- 1 IPv6 or
- 1 IPv4 and 1 IPv6
Note: This also means removing the address
127.0.1.1 that might be present as default.
For instance, if your IP address is
192.168.15.77, and your hostname
prox4m1, then your
/etc/hosts file could look like:
127.0.0.1 localhost 192.168.15.77 prox4m1.proxmox.com prox4m1 # The following lines are desirable for IPv6 capable hosts ::1 localhost ip6-localhost ip6-loopback ff02::1 ip6-allnodes ff02::2 ip6-allrouters
You can test if your setup is ok using the
hostname --ip-address 192.168.15.77 # should return your IP address here
Install Proxmox VE
Adapt your sources.list
Add the Proxmox VE repository:
echo "deb [arch=amd64] http://download.proxmox.com/debian/pve bookworm pve-no-subscription" > /etc/apt/sources.list.d/pve-install-repo.list
Add the Proxmox VE repository key as root (or use sudo):
wget https://enterprise.proxmox.com/debian/proxmox-release-bookworm.gpg -O /etc/apt/trusted.gpg.d/proxmox-release-bookworm.gpg # verify sha512sum /etc/apt/trusted.gpg.d/proxmox-release-bookworm.gpg 7da6fe34168adc6e479327ba517796d4702fa2f8b4f0a9833f5ea6e6b48f6507a6da403a274fe201595edc86a84463d50383d07f64bdde2e3658108db7d6dc87 /etc/apt/trusted.gpg.d/proxmox-release-bookworm.gpg
Update your repository and system by running:
apt update && apt full-upgrade
Install the Proxmox VE Kernel
First you need to install and boot the Proxmox VE kernel, as some packages depend on specific kernel compile flags to be set or feature extensions (e.g., for apparmor) to be available.
apt install proxmox-default-kernel systemctl reboot
Install the Proxmox VE packages
Install the Proxmox VE packages
apt install proxmox-ve postfix open-iscsi chrony
Note that you can replace
chrony with any other NTP daemon, but we recommend against using
systemd-timesyncd on server systems, and the
ntpsec-ntpdate option might conflict with bringing up networking on boot on some hardware.
Configure packages which require user input on installation according to your needs.
If you have a mail server in your network, you should configure postfix as a satellite system. Your existing mail server will then be the relay host which will route the emails sent by Proxmox VE to their final recipient.
If you don't know what to enter here, choose local only and leave the system name as is.
Remove the Debian Kernel
Proxmox VE ships its own kernel and keeping the Debian default kernel can lead to trouble on upgrades, for example, with Debian point releases. Therefore, you must remove the default Debian kernel:
apt remove linux-image-amd64 'linux-image-6.1*'
Update and check grub2 config by running:
Recommended: Remove the os-prober Package
os-prober package scans all the partitions of your host to create dual-boot GRUB entries.
But the scanned partitions can also include those assigned to virtual machines, which one doesn't want to add as boot entry.
If you didn't install Proxmox VE as dual boot beside another OS, you can safely remove the
apt remove os-prober
Connect to the Proxmox VE web interface
Connect to the admin web interface (
If you have a fresh install and have not added any users yet, you should select PAM authentication realm and login with
root user account.
Create a Linux Bridge
Create a Linux Bridge called
vmbr0, and add your first network interface to it.
The recommended default configuration can be adapted from the example given in the documentation. See the default configuration using a bridge.
Upload Subscription Key
The Proxmox VE enterprise repository is set up automatically during the installation as it's the recommended repository for stable, enterprise usage.
Access to that repository is one of the benefits of a Proxmox VE subscription, see this forum thread for more info about why you should get one.
You should upload your subscription key now in the web interface, then you can remove the no-subscription repository added for installation.
PVE Kernel fails to boot
If the kernel fails to boot with
error: bad shim signature., make sure Secure Boot is disabled.
resolv.conf gets overwritten
The PVE GUI expects to control DNS management and will no longer take its DNS settings from
Any package that auto-generates (overwrites)
/etc/resolv.conf will cause DNS to fail,
e.g. packages 'resolvconf' for IPv4 and 'rdnssd' for IPv6.
If you see messages like
ipcc_send_rec failed: Connection refused then you should review your
/etc/hosts file according to the instructions above.
Network Fails on Boot Due to NTPsec Hook
Some users reported that after the upgrade their network failed to come up cleanly on boot, but worked if triggered manually (e.g., using
ifreload -a), when ntpsec was installed.
We're still investigating for a definitive root cause, but it seems that an udev hook which the
/etc/network/if-up.d/ntpsec-ntpdate might hang on some hardware, albeit due to changes not directly related to ntpsec.
Since the chrony NTP daemon is used as default for new installations since Proxmox VE 7.0 the simplest solution might be switching to that via
apt install chrony.