Software Management

Management

thin-edge.io enables you to manage the software installed on your device. The following sections details how to install and remove software packages.

info

For more detailed information on the Cumulocity IoT Device Management features, please check out the official documentation.

To add a new software or software version

1. Navigate to the Management → Software repository page

   

   The page will display all of the software packages which are are available for to be installed on a device.

2. Select Add software and fill in the details

   

   tip

   • If you are using the apt software type and hosting the package in an external repository, then just use an a single space in the Provide a file path option.

3. Select Add software to create the item

To install software on a device

1. Select the software you want to install on the device

   

2. Review the software changes

   

   info

   You can combine installing and removing software in the same operation

3. Select Apply Changes and wait for the operation to complete

   

4. Use the installed package

   

To delete software from a device

1. Select the software you want to remove from the device

   

2. Review the software changes

   

   note

   You can combine installing and removing software in the same operation

3. Select Apply Changes and wait for the operation to complete

   

   

Updating to the latest thin-edge.io version

Updating thin-edge.io from Cumulocity IoT is the same process as installing any other software. You can update all of the thin-edge.io packages by installing a single package called tedge-full.

Below shows instructions on how to update thin-edge.io to the latest version:

1. Create a software package using the instructions in the add a new software package section and use the following package properties

   Property	Value
   Name	tedge-full
   Version	latest
   Software type	apt
   Software File	Select Provide a file path, and use a single space character

   tip

   The Software type value depends on which Software Management Plugin you're using.

   On Debian systems the software type will be apt, but you can also install other Software management Plugin's to support installing other types of packages such as Alpine Linux (apk) or RPM packages (rpm).

2. Select the tedge-full software you want to install on the device

   

3. Review the software changes and select Apply changes

   

4. Wait for the operation to complete

warning

If you are upgrading thin-edge.io from any version prior to 1.0.0 (including 1.0.0-rc.1), then you will have to restart the device after the update before the new version of the tedge-agent will be activated. Until the device is restarted (or the tedge-agent service is restarted), the previous version of the tedge-agent will still be running.

Configuration

Switching to Advanced Software Management

thin-edge.io supports both Legacy Software Management and Advanced Software Management features of Cumulocity IoT. By default, Legacy Software Management is selected. To switch to Advanced Software Management, use the tedge command to change the following configurations:

sudo tedge config set c8y.software_management.api advanced
sudo tedge config set c8y.software_management.with_types true

• The first key c8y.software_management.api can be set to either legacy or advanced.
• If the second key c8y.software_management.with_types is set to true, the c8y_SupportedSoftwareTypes fragment is sent based on the software types reported by the software_list MQTT API.

After changing the configurations, a restart of the tedge-mapper-c8y service is required. To restart the service using systemctl, run this command:

sudo systemctl restart tedge-mapper-c8y

tedge-apt-plugin: Filter packages by name and maintainer

By default the tedge-apt-plugin lists all of the installed Debian (*.deb) packages. On typical Debian installations, the list of packages could easily be more than 500 packages. In order to focus on the Debian packages which are important for your device, the tedge-apt-plugin supports filtering by either name or maintainer.

The package list filter criteria can be configured via the thin-edge.io configuration (e.g. tedge.toml). Create the apt table in tedge.toml and fill it with the name and maintainer keys. The value of each filter key should be a valid regex pattern. Your filters should look like this:

[apt]
name = "(tedge|c8y|python|wget|vim|curl|apt|mosquitto|ssh|sudo).*"
maintainer = ".*(thin-edge.io|other).*"

You can also test the filters by running the tedge-apt-plugin locally on the command line. Running the commands locally help you tune the filters to be sure they work as expected. Below shows some examples of using various filters:

# Match by name
tedge-apt-plugin list --name '^lib.*' --maintainer ''

# Match by maintainer
tedge-apt-plugin list --name '' --maintainer '.*thin-edge.io.*'

# Match by name or maintainer
tedge-apt-plugin list --name 'python3.*' --maintainer '.*thin-edge.io.*'

Once you have the filter criteria that you're happy with, you can make the setting permanent by updating the thin-edge.io configuration.

sudo tedge config set apt.name '(tedge|c8y|python|wget|vim|curl|apt|mosquitto|ssh|sudo).*'
sudo tedge config set apt.maintainer '.*(thin-edge.io|other).*'

FAQ

The following contains frequently asked questions regarding the software management feature.

Hosting linux packages in Cumulocity IoT

The recommended way to install linux packages such as deb, apk and rpm is to install packages directly from a configure package repository such as public repositories for your Operating System, or using a package service such as Cloudsmith, JFrog, Gemfury, Packagecloud etc. Using a package repository supports the full dependency resolution that users are familiar with when install packages manually, e.g. using apt-get install mypackage, and the correct architecture will be automatically selected for your device (e.g arm64/aarch or amd64/x86_64 etc.).

If you choose to host the software packages in Cumulocity IoT or via some other blob store, then the automatic dependency installation and architecture will not function so you have to manage all of this yourself. It might be manageable if you have simple packages with no dependencies and have an architecture agnostic package (e.g. the architecture is set to all or noarch).

When hosting the linux packages within Cumulocity IoT then ensure that:

• the package does not have any dependencies

• the name and version used in the Cumulocity IoT Software repository matches the exact information contained in the package's meta data

  For example, below shows the apt-cache show jq information for the jq package where the Package and Version fields should match the name and version properties in Cumulocity IoT.

  Package: jq
  Version: 1.6-2.1
  Architecture: arm64

  If the package name and version does not match, then the package might fail to be installed due to a validation error.

• the Device type filter property is set in the Cumulocity IoT Software repository if the packages is only valid for a specific CPU architecture. The Device type filter is used to filter which packages are available for different devices types to ensure you can only install compatible packages on a given device.