How to Deploy Application Functions to Existing Resources in Azure – Step by Step

Introduction 

Deploying application functions to existing resources in Azure can seem daunting, but with the right guidance, you can achieve this efficiently. This guide will walk you through each step, ensuring you can deploy your functions seamlessly. 

To begin with, you need to initialize your Azure Developer CLI (azd). This is crucial for setting up your environment and ensuring that all necessary configurations are in place. 

  1. Open your terminal or command prompt where your azd project files are located.
  2. Run the following command to initialize azd – azd init
  3. Verify and Modify Environment Values

If your application has already been deployed to other resources, it is essential to verify and potentially modify the environment values to ensure compatibility with the existing resources. 

  1. Run the command – azd env get-values 
  2. Review the values returned by the command and ensure they align with your current environment configuration. 
  3. If necessary, modify these values in the .env file to match the required settings. 

 

Update Tags for Resources

Before deploying your application, it is important to update the tags for the resources where the code will be deployed. These tags help identify and manage the application within your Azure environment. Typically, the tags to update are azd-env-name and azd-service-name.

To update the tags, navigate to your resource group in the Azure portal and modify the necessary tag values to correspond with your deployment settings. 

It is critical to ensure that the azd-env-name tag is updated for your Resource Group in the Azure portal. This tag is essential for correctly identifying the environment in which your application will be deployed.

 Authenticate to Azure

Before deploying the application, it is essential to authenticate to Azure. This ensures that you have the necessary permissions to proceed with the deployment process. 

Run one of the following commands to log in:

azd auth login

or, if you prefer to use a device

azd auth login –use-device-code

Finally, execute the following command to deploy the application without provisioning new resources:

azd deploy <service> 

Replace  with the name of your Azure Function service as defined in your azure.yaml file. This command will deploy only the application code to the specified service that refers by tag azd-service-name. 

Conclusion 

By following these steps, you should be able to deploy your application functions to the existing resources in Azure efficiently. Make sure to verify your environment values thoroughly and adjust them as needed to ensure a smooth deployment process.