UniFi

The next step is to install the UniFi Controller software.

Add the UniFi repository to the sources list, using the following commands:

echo 'deb http://www.ubnt.com/downloads/unifi/debian unifi4 ubiquiti' | sudo tee -a /etc/apt/sources.list.d/100-ubnt.list > /dev/null
sudo apt-key adv --keyserver keyserver.ubuntu.com --recv 06E85760C0A52C50
sudo apt-get update

Install UniFi, using the following package install command:
```
sudo apt-get -y install unifi
```
The installation takes a couple of minutes to complete, but is fully automated and includes components such as MongoDB.
Stop and disable the default MongoDB database instance, using the following commands:
```
sudo systemctl stop mongodb
sudo systemctl disable mongodb
```
Without making this configuration change, you will have two separate instances of MongoDB running; an unused default database instance, and the UniFi database instance. This is obviously not desirable on a device with limited resources, such as the Raspberry Pi.

Upgrade the Snappy Java Library, using the following commands:

cd /usr/lib/unifi/lib
sudo rm snappy-java-1.0.5.jar
sudo wget https://repo1.maven.org/maven2/org/xerial/snappy/snappy-java/1.1.2/snappy-java-1.1.2.jar
sudo ln -s snappy-java-1.1.2.jar snappy-java-1.0.5.jar

The version included with the UniFi package is significantly out-of-date, and has many known bugs and compatibility issues.

On the Raspberry Pi 1 and Raspberry Pi Zero (W), which are both older ARMv6-based devices, UniFi Cloud Library support must be removed using the following command:
```
sudo rm /usr/lib/unifi/lib/native/Linux/armhf/libubnt_webrtc_jni.so
```
UniFi Cloud access is not supported on ARMv6-based devices, and the presence of this library will stop the UniFi software from starting on these devices.
Once completed, reboot your Raspberry Pi using the following command:
```
sudo reboot
```
When the reboot is complete, proceed with the Setup Wizard.

The UniFi service can take several minutes before it is ready to serve web pages after a reboot.

Setup Wizard

Use a web browser to view HTTPS port 8443 on your Raspberry Pi:
```
https://<raspberrypi>:8443
```
Replace <raspberrypi> in the above example with the IP address of your Raspberry Pi. The UniFi Setup Wizard page will be displayed.

Thank you for purchasing Ubiquiti Enterprise Solution. You will be able to setup your controller in a few minutes.
Select your country and timezone, then click Next. The Discover page will be displayed.

Please select the devices you would like to configure.
If you have any unmanaged devices on the network, you may select them here, then click Next. The Wireless page will be displayed.

For Wireless Networks, the installation wizard can create a secure primary wireless network for you.
Enter your new wireless Secure SSID and Security Key, then click Next, or click Skip to do this later. The Password page will be displayed.

Please provide an administrator name and password for UniFi Controller access.
Enter an Admin Name, Password and Confirm Password for UniFi Controller access, then click Next. The Finish page will be displayed.

Please review the settings below. Click “Back” to make any changes or “Finish” to activate the settings. Once finished you will be redirected to the management interface.
Review the settings shown, then click Finish. The Login page will be displayed.

Login
Enter your Username and Password, then click Login. The Dashboard will be displayed.

Dashboard
The Ubiquiti UniFi Controller software is now installed and running on your Raspberry Pi!