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Install Kura

Kura is provided using a DEB Linux package. Visit the Kura download page to find the correct installation file for the target system.

Installer types

Several installers can be found on such page, and they fall into one of the following categories:

  1. specific device profiles, like `kura_5.5.0_nvidia-jetson-nano_installer.deb`` (identified with the device name in the downloads page);
  2. generic profiles, like kura-5.5.0_generic-arm32_installer.deb; and
  3. profiles with suffix nn, like kura_5.5.0_nvidia-jetson-nano-nn_installer.deb

Profiles of types (1) and (2) ship a Kura version with networking functionalities. In particular, the installers of kind (1) use Kura Networking for leveraging network interface configurations and are made for a specific device.

Installers of type (2) can be installed on targets with NetworkManager; a commonly available tool for managing Linux networking. Kura leverages this tool for networking functionalities. Refer to the Generic installers section for further information.

Installers of type (3) with the suffix nn are No Networking profiles that do not bundle the Kura Network Manager: all the network configurations need to be done outside of Kura. Functionalities missing in NN profiles compared to the full Kura profiles:

  • Networking interfaces management
  • Firewall configuration management
  • Network Threat management

Generic installers

Kura can be installed using the generic profiles:

kura-<kura-version>_generic-<arch>_installer.deb/rpm

where <arch> is one of the supported architectures: x86_64, arm32, and arm64. A generic Kura profile can work on systems that have available the dependencies listed in the Kura dependencies section, and that have at least one physical ethernet interface.

Java Heap Memory Assignment

Eclipse Kura's Generic profile incorporates an adaptive Heap Memory allocation system during installation. The allocation follows a formula based on your gateway's available memory. If your gateway has less than 1024MB of RAM, Kura will set -Xms and -Xmx to 256MB. For gateways with more than 1024MB, one quarter of the total RAM will be assigned to -Xms and -Xmx.

Initial network configuration

During the installation of a generic profile with network management support, the initial network configuration will be generated dynamically using the rules described below:

  • The existing wired and wireless Ethernet network interface names are sorted in ascending lexicographic order.

  • The first wired Ethernet interface in the list will be configured as follows:

    • Status: Enabled for WAN
    • Configure: Using DHCP

  • The first wireless LAN interface will be configured as follows:

    • Status: Enabled for LAN
    • Configure: Manually
    • IP address: 172.16.1.1
    • Passphrase: testKEYS
    • DHCP & NAT: enabled

  • All other network interfaces will be disabled.

For example, if the system contains the following interfaces: wlp2s0, wlp3s0, enp3s0, eno1, ens2; then eno1 will be enabled for WAN in DHCP client mode, wlp2s0 will be configured as an AP, and all other network interfaces will be disabled.

Warning

On systems that do not use systemd's predictable interface naming scheme (see Freedesktop reference) the primary network interface name might change whenever a re-enumeration is triggered (for example, after a reboot or after plugging in an external network adapter).

The advice is to install Kura on systems that use a reliable naming convention for network interfaces.

Systemd consistent network interface naming assigns the name prefix based on the physical location of the device, see Understanding the Predictable Network Interface Device Names for further reference.

Initial firewall configuration

The initial firewall configuration will be as shown in the screenshot below.

Please note that installing a Kura generic profile with network configuration support will replace the current network and firewall configuration with the one shown above.

Other Kura services

Kura generic profiles do not contain gateway specific customizations, this implies that the values of some configuration parameters may be incorrect and/or missing and must be manually filled after installation. For example the user might want to:

  • Configure the other network interfaces, if any.
  • Setup additional firewall rules.
  • Edit the /opt/eclipse/kura/framework/jdk.dio.properties with the correct GPIO mappings. By default this file is empty.

Kura dependencies

To have all the Kura features working, the following dependencies are required:

  • General: setserial, zip, gzip, unzip, procps, usbutils, socat, gawk, sed, inetutils-telnet.
  • Security: polkit or policykit-1, ssh or openssh, openssl, busybox, openvpn.
  • Bluetooth: bluez or bluez5, bluez-hcidump or bluez5-noinst-tools.
  • Time: ntpdate, chrony, chronyc, cron or cronie.
  • Networking: network-manager or networkmanager, bind9 or bind, dnsmasq or isc-dhcp-server or (dhcp-server and dhcp-client), iw, iptables, modemmanager, hostapd, wpa-supplicant, ppp, iproute2.
  • Logs: logrotate.
  • Gps: gpsd.
  • Python: python3.
  • Java: openjdk-17-jre-headless or temurin-17-jdk or openjdk-8-jre-headless or temurin-8-jdk.
  • Others: dos2unix

Supported devices

Kura generic has been tested on the following devices and provides full configuration of all the available interfaces and GPIO mappings.

Device Architecture OS
Raspberry Pi 3/4 arm32 Raspbian "Bookworm"
Raspberry Pi 3/4 arm64 Ubuntu 20.04
Intel Up² x86_64 Ubuntu 20.04
NVIDIA Jetson Nano™ arm64 Ubuntu 20.04

Check out the quick start guides for the detailed installation steps and set-up procedures: