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Pro Hardware Guide
This guide is written for professional liquidity providers to turn a powerful Mini PC into an always-on OpenDEX node.
Two options are available:
- Any >1GB USB stick will do.
- A NAS/Samba share works too.
- Alternative: ODROID H2+ - same platform, features NVME, needs separate case, power supply and wifi dongle, out of stock at times
- Any >1GB USB stick will do.
- A NAS/Samba share works too.
- 1.Download Ubuntu Server 20.04 LTS onto your computer. Any other linux distribution supporting docker is also fine. This guide was written using
Ubuntu Server 20.04. - 2.Insert a USB Stick into your computer and create the a bootable USB Stick with the ubuntu image you just downloaded.
- 3.Open your Mini PC, plug in RAM & drives, close it, connect it to your router via ethernet cable and to a power supply. Connect a screen via HDMI, a USB keyboard, the created bootable USB Stick, fire the Mini PC up and follow the the inital setup instructions.
- 4.Update ubuntu via
sudo apt update && sudo apt upgrade - 5.If you are using Ubuntu 20.04, install docker & docker-compose by running
sudo apt install docker.io. Otherwise if you are using any version besides Ubuntu 20.04, follow the official instructions to install docker. - 6.Add new user
opendex:
ubuntu@ubuntu:~$ sudo adduser opendex
Adding user `opendex' ...
Adding new group `opendex' (1001) ...
Adding new user `opendex' (1001) with group `opendex' ...
Creating home directory `/home/opendex' ...
Copying files from `/etc/skel' ...
New password:
Retype new password:
passwd: password updated successfully
Changing the user information for opendexd
Enter the new value, or press ENTER for the default
Full Name []:
Room Number []:
Work Phone []:
Home Phone []:
Other []:
Is the information correct? [Y/n] ubuntu@ubuntu:~$ Y
- 1.Add the
opendexuser to the sudo group (advanced users can skip this and use another user to run sudo commands), the docker group and test if docker is working:
ubuntu@ubuntu:~$ sudo usermod -aG sudo opendex
ubuntu@ubuntu:~$ sudo usermod -aG docker opendex
# switch to user opendex
ubuntu@ubuntu:~$ sudo su - opendex
opendex@ubuntu:~$ docker run hello-world
Hello from Docker!
This message shows that your installation appears to be working correctly.
- 1.Looking good! Optionally, add an alias to enter your opendexd environment by simply typing "opendex":
opendex@ubuntu:~$ sudo nano ~/.bash_aliases
# add the line
alias opendex='bash ~/opendex.sh'
# CTRL+S, CTRL+X. Then run
opendex@ubuntu:~$ source ~/.bashrc
- 1.Connect the USB stick to your machine and set it up. It is very important to do this for a mainnet setup (given you do not want to lose money)!
# check the USB stick's path with
opendex@ubuntu:~$ ls -la /dev/ | grep sd
crw------- 1 root root 2, 61 Dec 3 16:27 ptysd
brw-rw---- 1 root disk 8, 0 Dec 3 16:27 sda
brw-rw---- 1 root disk 8, 1 Dec 3 16:27 sda1 #this is your USB Stick
crw------- 1 root root 3, 61 Dec 3 16:27 ttysd
# set it to automount via fstab
opendex@ubuntu:~$ sudo nano /etc/fstab
# add the line
/dev/sda1 /media/USB ext4 defaults 0 2
# CTRL+S, CTRL+X. Then mount it
opendex@ubuntu:~$ sudo mkdir /media/USB
opendex@ubuntu:~$ sudo mount -a
# check if mounting worked
opendex@ubuntu:~$ df -h
# make sure opendexd can use it
opendex@ubuntu:~$ sudo chown opendex:opendex /media/USB
Last modified 2yr ago