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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:
Light Reference Shopping List (Europe): ~180 €
- Any >1GB USB stick will do.
- A NAS/Samba share works too.
Full Reference Shopping List (Europe): ~465 €
- 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.
Setup
- 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:
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[email protected]:~$ sudo adduser opendex
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Adding user `opendex' ...
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Adding new group `opendex' (1001) ...
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Adding new user `opendex' (1001) with group `opendex' ...
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Creating home directory `/home/opendex' ...
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Copying files from `/etc/skel' ...
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New password:
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Retype new password:
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passwd: password updated successfully
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Changing the user information for opendexd
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Enter the new value, or press ENTER for the default
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Full Name []:
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Room Number []:
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Work Phone []:
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Home Phone []:
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Other []:
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Is the information correct? [Y/n] [email protected]:~$ Y
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- 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:
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[email protected]:~$ sudo usermod -aG sudo opendex
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[email protected]:~$ sudo usermod -aG docker opendex
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# switch to user opendex
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[email protected]:~$ sudo su - opendex
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[email protected]:~$ docker run hello-world
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Hello from Docker!
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This message shows that your installation appears to be working correctly.
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- 1.Looking good! Optionally, add an alias to enter your opendexd environment by simply typing "opendex":
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[email protected]:~$ sudo nano ~/.bash_aliases
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# add the line
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alias opendex='bash ~/opendex.sh'
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# CTRL+S, CTRL+X. Then run
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[email protected]:~$ source ~/.bashrc
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- 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)!
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# check the USB stick's path with
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[email protected]:~$ ls -la /dev/ | grep sd
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crw------- 1 root root 2, 61 Dec 3 16:27 ptysd
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brw-rw---- 1 root disk 8, 0 Dec 3 16:27 sda
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brw-rw---- 1 root disk 8, 1 Dec 3 16:27 sda1 #this is your USB Stick
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crw------- 1 root root 3, 61 Dec 3 16:27 ttysd
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# set it to automount via fstab
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[email protected]:~$ sudo nano /etc/fstab
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# add the line
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/dev/sda1 /media/USB ext4 defaults 0 2
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# CTRL+S, CTRL+X. Then mount it
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[email protected]:~$ sudo mkdir /media/USB
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[email protected]:~$ sudo mount -a
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# check if mounting worked
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[email protected]:~$ df -h
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# make sure opendexd can use it
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[email protected]:~$ sudo chown opendex:opendex /media/USB
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Last modified 8mo ago