Managing Drivers
In this article:
Drivers overview
In CloudShell, a driver is a group of commands that can be associated with a blueprint or resource. Each blueprint or resource can have one driver associated with it. Blueprint drivers are developed in CloudShell Authoring while resource drivers can also be developed in Python, on their own or within Shells. To learn more about Shells, see Managing Shells.
Note: Resource drivers are supported for backwards compatibility only.
CloudShell manages the life cycle of the driver, where it:
- Initializes the driver, whereby it allows the driver to do some setup initialization
- Performs Cleanup at the end of driver life cycle, whereby it allows the driver to free system resources for which the driver is no longer required
- Preserves the State of the driver commands
Viewing drivers
In the Manage dashboard, you can view a repository of the blueprint and resource drivers that were uploaded in your domain. You can filter, sort, and search the repository for drivers.
To view existing blueprint and resource drivers:
In the Manage dashboard, from the left sidebar, select Drivers > Blueprint, or Drivers > Resource.
The respective driver catalog opens, displaying the blueprint or resource drivers that were previously added to CloudShell, and related details, including: Name, Type, Version, Blueprints or resource Models, Domains, and Modified by date, time, and user name.
Note: Clicking Manage > Drivers opens the Driver/Blueprint catalog by default.
- To filter the list by domain, from the Domain dropdown list, select All Domains or a particular domain.
- To sort the list, from the Sort By dropdown list, select Modified to sort the list by date and time in chronological order, or select Name to sort the list by driver name in alphabetical order.
- To search for particular drivers, type the relevant text in the search box
at the top of the left sidebar. For example, you can search by name, type, model, or owner.
Adding drivers
You can add drivers to resources or blueprints to add commands that can be run in a sandbox. Drivers can be developed using CloudShell Authoring or Python scripts that comply with the rules defined by CloudShell. To learn how to create Python scripts, see the CloudShell Developer Guide.
Note: Python drivers may have dependencies they need to use in order to run. For additional information, see Requirements, driver dependencies, virtual environments.
You can also automate the execution of Python scripts using the API. For details about automating scripts, see CloudShell Automation API.
You can upload the following CloudShell Authoring and Python drivers to the CloudShell Portal:
For resources, you can add DLL CloudShell Authoring drivers and ZIP files with Python drivers
Note: Python drivers may have dependencies they need to use in order to run. For additional information, see Requirements, driver dependencies, virtual environments.
- For blueprints, you can add DLL CloudShell Authoring drivers
Note: The driver will be added to the domain you are currently in. To expose the driver to all domains, add the driver to the Global domain.
To add blueprint and resource drivers:
- In the Manage dashboard, from the left sidebar, select Drivers > Blueprint or Drivers > Resource to open the respective driver catalog.
In the toolbar, click +Add New Driver.
A dialog box is displayed, prompting you to select a driver to upload.
Browse and select a driver file to upload to CloudShell, and click Open.
The Uploading Completed message is displayed at the top of the driver catalog, indicating the upload status. When completed, the Edit button is displayed on the right. For more information, see Editing drivers.
Note: In the driver catalog, you can easily identify the driver type. The driver names are marked by the respective Python or CloudShell Authoring icon, and the Type column displays the driver type.
Editing drivers
You can edit a driver to modify its default parameters.
To edit blueprint and resource drivers:
- In the Manage dashboard, from the left sidebar, select Drivers > Blueprint or Drivers > Resource to open the respective driver catalog.
- Click the Name of the driver you want to edit.
Or-
Click the driver's More actions button
and select Edit.The Edit Driver dialog box for the respective blueprints or resource driver is displayed.
Edit the relevant fields, as described in the following table. For each driver, additional read-only fields are displayed and vary per driver type and related functions.
Field Description Driver File
The driver file. To replace the current driver file with another one, browse to the location where the required file is located, select the file (DLL file for blueprint drivers, or zip, py, or pyc file for resource drivers), and click Open.
Name
The name of the driver. Edit as required.
Version
The driver version number is automatically generated by the system. The number will be automatically incremented with every new version of the driver.
Description
Type the relevant text to clearly describe the driver.
Models
(Relevant for resource drivers) From the dropdown list, select the relevant resource models to associate the resource driver to. After you upload the resource driver, you will need to associate it to its intended resource models.
To associate drivers to resource models via Resource Manager, see Associating a driver to a resource model.
- Click Apply to apply the changes and keep the window open.
- Click Save to save the changes and close the window.
The updated details of the edited driver are displayed in the relevant blueprint or resource driver catalog.
Activating resource drivers
After you upload the resource driver and you specify the resource models for it, you can then associate this driver with the existing inventory resources that do not have drivers.
To activate a resource driver:
In the Manage dashboard, from the left sidebar, select Drivers > Resource.
The resource driver catalog is displayed.
Click the driver's More actions button
and select Set as active.A dialog box is displayed, prompting you to confirm.
A confirmation message is displayed, indicating the number of resources updated with this driver.
Downloading drivers
To download blueprint and resource drivers:
In the Manage dashboard, from the left sidebar, select Drivers > Blueprint or Drivers > Resource.
The respective blueprint or resource driver catalog is displayed.
Click the driver's More actions button
and select Download.A dialog box is displayed, prompting you to open or save the file.
Deleting drivers
To delete drivers:
In the Manage dashboard, from the left sidebar, select Drivers > Blueprint or Drivers > Resource.
The respective blueprint or resource driver catalog is displayed.
- Select the check boxes next to the relevant drivers that you want to delete.
In the toolbar, click the Delete Selected button.
Or-
Click the script's More actions button
and select Remove.A message is displayed, prompting you to confirm the deletion.
The selected drivers are removed from the respective blueprint or resource driver catalog.
Requirements, driver dependencies, virtual environments
Each Python driver's dependencies are listed in the requirements.txt file that is included in the zip file that contains the driver. The dependencies are installed on the execution server by the pip installation when CloudShell prepares the Python virtual environment for the driver. To use offline execution servers, the admin will need to perform several additional configurations.
For additional information, see What are Python Virtual Environments?.
