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eclipse IoT Linux open source

Installing and running Eclipse Kura on a Raspberry Pi B (Model 1)

Now that I have a running Kapua instance, its time to look at the network edge to gateways and devices.

Eclipse Kura is a Java/OSGi-based framework for IoT gateways. A gateway is a devices that is distributed at the network edges and communicates with sensor or steering devices using cables, Bluetooth or other private networks.

Sins Kura supports a rather broad range of small devices, my plan is to use a spare Raspberry Pi as gateway hardware.

Unfortunately my old Raspberry PI B is from the first generation, based on the ARMv6 architecture with 512 MB RAM. Therefore I cannot base the OS on Fedora that needs at least Model 2 and ARMv7 or ARMv8 architecture, so that I need to use Download Raspbian for Raspberry Pi  for this. I choose the small server set and write that to the SD card:

unzip -p 2017-11-29-raspbian-stretch.zip | sudo dd of=/dev/sdX bs=4M conv=fsync status=progress

Now inserting the SD card into the Pi, connecting LAN and booting. By default, ssh is disabled so I had to connect a keyboard and monitor and do that manually.

Login as user “pi”, password: “raspberry” (this should be changed asap!)

systemctl enable ssh.service
systemctl start ssh.service
hostname -I

(this will give you the IP address where to connect to.

Now the fun can begin. I typically copy my ssh-key and login from my workstation:

ssh-copy-id ~/.ssh/id_rsa.pub pi@<ip_of_pi>
ssh pi@<ip_of_pi>

Now its time to install Eclipse Kura! Get the latest version from here. Since I have the old Raspberry model I choose this one.  For the installation I mainly followed the Raspberry Pi Quick Start documentation but I will show the steps here, too.

After booting the Pi several steps are needed on the Raspbian OS: At first, the dhcpcd5 packages needs to be removed:

sudo apt-get purge dhcpcd5

then its useful to install the gdebi command tool to find all dependencies needed:

sudo apt-get update
sudo apt-get install gdebi-core

And finally install Java:

sudo apt-get install openjdk-8-jre-headless

Finally, the package can be downloaded and installed:

wget http://download.eclipse.org/kura/releases/<version>/kura_<version>_raspberry-pi-2-3_installer.deb

Note: replace <version> in the URL above with the version number of the latest release (e.g. 3.1.1). Install Kura with:

sudo gdebi kura_<version>_raspberry-pi-2-3_installer.deb

Since Kura will make use of a wifi card to connect to devices, I also inserted a wifi dongle. And now its time for a reboot!

Kura starts up automatically and presents a web UI:

http://<ip-of-pi>
Username: admin

Password: admin
Eclipse kura screenshot
Screenshot from Eclispe kura running on Raspberry Pi B

That’s it! Stay tuned for the next part: Connecting Kura to the central Kapua instance.

By Ingo Boernig

I am totally committed to the open source software ideas and principles. Throughout my career I always worked on integrating and extending Open Source solutions in the enterprise market.

I work at Red Hat, the world's leading provider of open source software solutions. I'm part of the Solution Architect team, responsible for the logistics, retail, travel and energy industry in Germany.

Before joining Red Hat in 2014 I worked in the services unit of IBM, integrating enterprise open source solutions in large organizations and worked on an open source enterprise architecture.

I started my professional career at SUSE in 1999 where the enterprise open source movement kicked off.

I have a diploma in theoretical physics and got exposed to Linux and Open Source software in the mid-nineties at university.

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