This tutorial will show you how to connect to OpenVPN Server from Manjaro 17.0. I will connect to my existing OpenVPN Server installed on Debian 9 Server. If you build your own OpenVPN Server, make sure you download the .ovpn configuration file. This file will be used by the client to connect to the server automatically.
I assume you have a working OpenVPN Server and also you have .ovpn config file on hands. Next we can start configure Manjaro. Open Network, and the follow these steps shown below.
Once connected, you can test or check your IP address via http://whatismyip.com. Your new IP address will be changed to the OpenVPN Server IP address.
I hope that helps and cheers.