This document will walk you through installing and running the essential EdgeX Foundry microservices on a RaspberryPi for testing and evaluation. This should not be used in a production environment. This guide is for developers who want to learn EdgeX by running it as a mock gateway device on a commonly available hobbyist device.
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Download the image file for Ubuntu Server from from http://cdimage.ubuntu.com/ubuntu/releases/18.04.3bionic/release/ubuntu-18.04.35-preinstalled-server-arm64+raspi3.img.xz, then insert your microSD card into your computer so that you can flash the disk image onto it. If you are running Ubuntu or any other Linux distro, you can flash the image using this command:
xzcat ubuntu-18.04.35-preinstalled-server-arm64+raspi3.img.xz | sudo dd bs=32M of=/dev/mmcblk0 iflag=fullblock oflag=direct status=progress; sync
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The RaspberryPi 3B+ has a full gig of ram, but while running MongoDB (and also when building from source if you choose to do so) this may not be enough. So before going any further you will first want to create some additional memory capacity by adding a swap file to your filesystem. Run the following command to create a new 2GB swap file, start swapping on it, and automatically remount the swapfile on reboot:
sudo touch /var/swapsudo chmod 600 /var/swapsudo dd if=/dev/zero of=/var/swap bs=1M count=2048sudo mkswap /var/swapsudo swapon /var/swap
sudo sh -c "echo /var/swap swap swap defaults 0 0 >> /etc/fstab"
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