One of the key advantages of Phala Cloud is the ability to upgrade your application even while it’s running inside a TEE. Thanks to the flexible architecture of the Dstack SDK, your application isn’t permanently bound to specific hardware configurations.

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Update Process

  1. Navigate to your CVM dashboard
  2. Locate the CVM running the application you wish to update
  3. Click the Code Update button to open the update interface
  4. In the update window, you can:
    • Update your Docker Compose configuration
    • Modify environment variables
    • Adjust application settings

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Important Considerations

NOTEWhen restarting a Phala instance, it may not automatically pull the latest version of a Docker image if the tag has not changed. It’s advisable to increment Docker tags for every new deployment to ensure the latest image is used. This behavior aligns with the need to update the Docker Compose file and execute an upgrade to pull the latest imageThe new environment variables will completely replace all existing variables. Be sure to include all required variables in your update, even those you don’t intend to change.

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Completing the Update

After configuring your update parameters:
  1. Review all changes carefully
  2. Click the Save Changes button to initiate the update
  3. Monitor the update process through the CVM logs
The platform will handle the secure transition to your updated application while maintaining the TEE security guarantees.
Updating in Phala Cloud

Updating in Phala Cloud

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Best Practices for Code Updates

  • Test your updates in a development environment before applying to production
  • Keep a backup of your current configuration before making changes
  • Schedule updates during periods of low user activity
  • Implement version tracking in your application to verify successful updates