Quick guide to setting up an Armbian server

A quick reference I use to install and set up a headless Armbian server.
Originally written for a Cubox-i4pro, but it works for most modern SBCs (Orange Pi, Banana Pi, Odroid, etc.).

Note: Some paths or tools may vary slightly depending on whether you’re using a Debian- or Ubuntu-based image, or on the Armbian version.

1. Install to the MicroSD

1.1. Download and prepare the image

Download the image for your device:

wget -c https://dl.armbian.com/your-device/Buster_current

Extract it:

unp Buster_current

(If it’s .xz and you don’t have unp, use unxz file.xz).

1.2. Flash the MicroSD

Make sure you’re using the correct device (/dev/sdX):

sudo dd if=Armbian_20.02.7.img of=/dev/sdX bs=1M status=progress
sync

1.3. First boot

• Insert the card
• Plug in Ethernet
• Power it on
• Wait a couple of minutes

2. First login

Connect via SSH:

ssh root@192.168.1.X

Default password:

1234

On first login, Armbian will force you to:

• Change root password
• Create a regular user (sudo)
• Set timezone

Then:

apt update && apt upgrade -y
reboot

3. Change hostname

sudo hostnamectl set-hostname new-name

Edit /etc/hosts:

sudo nano /etc/hosts

Example:

127.0.0.1   localhost new-name
::1         localhost new-name ip6-localhost ip6-loopback

4. Harden SSH

4.1. Key-based login

On your local machine:

ssh-keygen
ssh-copy-id user@192.168.1.X

4.2. Secure config

On the server:

sudo nano /etc/ssh/sshd_config

Basic setup:

IgnoreRhosts yes
PasswordAuthentication no
PermitEmptyPasswords no
PermitRootLogin no
MaxAuthTries 3
PubkeyAuthentication yes
X11Forwarding no
ClientAliveInterval 300
ClientAliveCountMax 2
Port 3343
AllowUsers user

Restart SSH:

sudo systemctl restart ssh

5. Network setup (static IP)

There are several ways to do this.

👉 Recommended: assign a static lease in your router (DHCP reservation).

If you prefer configuring it on the board:

5.1. Method 1: nmtui (recommended)

sudo nmtui

• Edit connection
• Set IPv4 to manual
• Enter IP, gateway and DNS

5.2. Method 2: armbian-config

sudo armbian-config

• Network → IP
• System → Avahi (optional)

5.3. Method 3: legacy method (not recommended today)

sudo systemctl disable NetworkManager
sudo systemctl stop NetworkManager
sudo nano /etc/network/interfaces

Example:

auto eth0
iface eth0 inet static
    address 192.168.1.100
    netmask 255.255.255.0
    gateway 192.168.1.1

Reboot:

sudo reboot

Nothing fancy — just the baseline setup I tend to use to get an SBC ready as a server.