How to Install and Configure Proxmox VE on a Bare Metal Dedicated Server

Tutorial Contents

Prerequisites

Before installing Proxmox VE, ensure your dedicated server meets the following requirements:

Verify Virtualization Support

If you currently have a Linux OS installed and want to check compatibility, boot into Linux and run:

egrep -c '(vmx|svm)' /proc/cpuinfo

Expected Output: If the output is greater than 0, hardware virtualization is enabled (Example: 8).

Phase 1: Installation Media & Booting

1

Download Proxmox VE ISO

Download the latest Proxmox VE ISO image from the official Proxmox website. Verify the downloaded ISO checksum to ensure file integrity:

sha256sum proxmox-ve_*.iso

Compare the output with the checksum provided by Proxmox.

2

Create Bootable Installation Media

On Linux: Use the dd command.

sudo dd if=proxmox-ve.iso of=/dev/sdX bs=4M status=progress oflag=sync

Note: Replace /dev/sdX with your actual USB drive identifier.

On Windows: Tools like Rufus can be used to create a bootable USB installer.
Crucial: When prompted by Rufus, you must select "DD Image mode". Writing a Proxmox ISO in standard ISO mode often corrupts the installer and causes it to fail during boot.

3

Boot the Dedicated Server

Insert the bootable USB drive and access the server's BIOS or IPMI/KVM console. Set the USB drive as the primary boot device and restart the server. You'll see the Proxmox installation menu.

Select Install Proxmox VE and press Enter.

4

Accept License Agreement

The installer will load and display the end-user license agreement. Click I Agree to continue.

Phase 2: Core Installation & Setup

5

Configure Storage

Choose the target disk for installation. For production environments, ZFS is highly recommended due to data integrity, snapshots, replication, and RAID capabilities.

Example storage options:

• ext4 or xfs: Standard Linux filesystems.
• ZFS RAID0: For a single SSD.
• ZFS RAID1: For two SSDs for redundancy.

Click Next after selecting your storage configuration.

6

Configure Region and Time Settings

Select your Country, Time Zone, and Keyboard Layout.

Example: Country: Sri Lanka | Timezone: Asia/Colombo | Keyboard: English (US)

Proceed to the next step.

7

Set Administrator Credentials

Create a strong root password (Example: StrongPassword123!). Enter a valid email address for system notifications and alerts.

8

Configure Network Settings

Enter your network information provided by your hosting provider.

• Management Interface: eno1
• Hostname: proxmox.example.com
• IP Address: 192.168.1.10/24
• Gateway: 192.168.1.1
• DNS Server: 8.8.8.8

Review carefully before proceeding and click Install. The installation process usually takes between 5 and 15 minutes.

9

First Boot

After the installation completes:

1. Remove the Installation Media (USB).
2. Reboot the Server.

Once booted, you'll see a console screen showing your web interface URL (Example: https://192.168.1.10:8006).

10

Access the Proxmox Web Interface

Open a web browser and navigate to your assigned URL: https://SERVER_IP:8006.

Login with:

• Username: root
• Password: your-root-password
• Realm: Linux PAM

You now have access to the Proxmox Dashboard.

Phase 3: System Configuration

11

Update Proxmox Packages

Open the shell from the web interface or connect to your server via SSH. Update your repositories and upgrade installed packages:

apt update
apt full-upgrade -y
reboot

12

Configure Enterprise-Free Repository

Many administrators use the free community repository if they do not have a paid subscription key.

GUI Method (Recommended for beginners):

• Navigate to Node -> Updates -> Repositories.
• Select the pve-enterprise repository and click Disable.
• Click Add, select No-Subscription, and save.
• Click Reload to update package lists.

CLI Method (Alternative):

# Disable enterprise repository
sed -i 's/^deb/#deb/g' /etc/apt/sources.list.d/pve-enterprise.list

# Add the no-subscription repository
echo "deb http://download.proxmox.com/debian/pve bookworm pve-no-subscription" > /etc/apt/sources.list.d/pve-install-repo.list
apt update

13

Create Linux Bridge Networking

Proxmox uses Linux bridges for VM networking. First, view your exact interface name:

ip addr

Edit your network configuration:

nano /etc/network/interfaces

Example configuration (Ensure eno1 matches the interface found via ip addr):

auto lo
iface lo inet loopback

iface eno1 inet manual

auto vmbr0
iface vmbr0 inet static
    address 192.168.1.10/24
    gateway 192.168.1.1
    bridge-ports eno1
    bridge-stp off
    bridge-fd 0

Apply changes by restarting the networking service:

systemctl restart networking

14

Configure Storage for Virtual Machines

Navigate to Datacenter → Storage. From here, you can add various storage types such as Directory, NFS, CIFS, ZFS, or Ceph.

Check available storage via CLI:

pvesm status

Phase 4: VM Creation & Security

15

Upload ISO Images

Navigate to Datacenter → Node → local → ISO Images. Upload operating system ISOs such as Ubuntu Server, Debian, Rocky Linux, or Windows Server via the GUI.

Alternatively, you can upload them directly via command line (SCP):

scp ubuntu.iso root@server:/var/lib/vz/template/iso/

16

Create Your First Virtual Machine

Click Create VM in the top right corner and configure the following:

• General: VM ID: 100 | Name: ubuntu-server
• OS: Select the uploaded ISO.
• System: Leave default values.
• Disk: Bus/Device: VirtIO | Disk Size: 50 GB
• CPU: Cores: 4
• Memory: RAM: 4096 MB
• Network: Bridge: vmbr0 | Model: VirtIO

Finish the wizard, right-click your new VM in the sidebar, and click Start.

17

Enable Firewall Protection

Navigate to Datacenter → Firewall and set Firewall to Yes.

Command line verification and activation:

pve-firewall status
systemctl enable pve-firewall
systemctl start pve-firewall

18

Configure Automatic Backups

Navigate to Datacenter → Backup and create a backup job. This ensures your VMs are safe in case of disaster.

• Recommended schedule: Daily, 02:00 AM
• Compression: ZSTD

CLI manual backup example:

vzdump 100 --compress zstd --storage local

19

Secure SSH Access

If not already installed, install the SSH server:

apt install openssh-server -y

Edit your SSH configuration:

nano /etc/ssh/sshd_config

Recommended changes:

PermitRootLogin prohibit-password
PasswordAuthentication no

Restart the SSH service to apply changes:

systemctl restart ssh

20

Monitor System Health

Useful monitoring commands to keep your Proxmox server running smoothly:

• CPU usage: top
• Memory usage: free -h
• Disk usage: df -h
• ZFS status: zpool status
• Proxmox services: systemctl status pveproxy

Best Practices for Production Deployments

To achieve maximum performance and reliability in a live environment, consider the following best practices:

• Use enterprise-grade SSD or NVMe drives.
• Configure ZFS RAID for redundancy.
• Schedule daily backups to an offsite location.
• Keep Proxmox updated regularly via the package manager.
• Enable firewall protection on the Datacenter and Node levels.
• Use strong passwords and enforce SSH keys for root access.
• Monitor storage health frequently.
• Separate management and VM traffic across different physical network interfaces when possible.