<ul><li>This guide explains the implementation of the deactivate/reactivate feature on OpenStack Horizon.</li><li>The front end code includes adding deactivate as an option in the image actions dropdown and writing the view and controller code.</li><li>Services and modules are created to organize and share code, and two services, deactivate-image and reactivate-image, are added.</li><li>The back end code involves making API calls to Glance, updating the status of the image, and adding code to two files.</li></ul>

From Concept to Code: Building the Deactivate/Reactivate Feature in OpenStack Horizon

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