Setting Up a Stable Diffusion API with Control Net using RunPod Serverless

Generative Labs
3 Jul 202313:02

TLDRThis tutorial guides you through setting up a Stable Diffusion API with Control Net using RunPod's serverless technology. It simplifies the process by eliminating Docker file configuration, allowing for easy setup and changes through the A1111 console. The video covers creating a network volume, deploying a pod, configuring the stable diffusion models, and launching the A1111 application. It also demonstrates how to create a serverless endpoint using a pre-built Docker image and testing the API with Postman. The tutorial concludes with generating images using both standard and Control Net methods, providing a practical example of the API's capabilities.


  • πŸš€ **Eliminate Docker Configuration**: The tutorial introduces a method to set up a stable diffusion API without configuring everything in a Docker file.
  • πŸ” **Console Configuration**: You can log into the A1111 console for configuration and manage the stable diffusion pod directly.
  • πŸ“¦ **Network Volume Creation**: A network volume is created to install stable diffusion, which simplifies the storage and management of models.
  • πŸ’Ύ **Robust Model Storage**: The script allocates 100 gigabytes for model storage, ensuring there is enough space for robust models.
  • πŸ”— **Linking with Python Jupyter**: The process involves linking up with Python Jupyter to access and run the A1111 run pod notebook.
  • πŸ› οΈ **Kanemaru Installation**: For control net configuration, the script guides on installing the Kanemaru module.
  • πŸ“‚ **Model Directory Management**: It's necessary to move stable diffusion models to the expected directory and remove any unwanted files or symbolic links.
  • 🌐 **Serverless Endpoint**: The tutorial shows how to create a serverless endpoint using a pre-built Docker image from Docker Hub.
  • πŸ“ **API Testing with Postman**: Postman is used to test the serverless API, with a configuration file provided for ease of setup.
  • πŸ”‘ **API Key and Serverless ID**: The serverless ID and API key are essential for configuring Postman to interact with the serverless endpoint.
  • πŸ–ΌοΈ **Control Net Arguments**: The script explains how to use control net arguments with base64 encoded images for text image generation.
  • πŸ“ˆ **Iterative Learning**: The tutorial encourages learning and mastering generative AI and media through new content and feedback.

Q & A

  • What is the purpose of setting up a stable diffusion API with Control Net using RunPod serverless?

    -The purpose is to harness the power of Control Net for stable diffusion through a serverless API, eliminating the need for complex Docker file configurations and allowing for easy changes in the configuration by restarting the stable diffusion pod.

  • How does moving stable diffusion configuration outside of Docker simplify the process?

    -Moving the configuration outside of Docker allows for a more straightforward setup and management of the stable diffusion environment, as changes can be made directly through the A1111 console without the need to modify Docker files.

  • What is the first step in setting up the stable diffusion API?

    -The first step is to create a network volume on RunPod to install stable diffusion, which involves navigating to 'My Storage', selecting 'Create Network Volume', naming it, and defining its storage capacity.

  • How does one deploy a pod to adjust the network volume settings?

    -To deploy a pod, one chooses 'RunPod Fast, Stable Diffusion' and then deploys it. After deployment, they connect to it using Python Jupyter.

  • What is the role of the A1111 run pod notebook in the setup process?

    -The A1111 run pod notebook is used to run cells that install and configure stable diffusion, including the installation of the kanemaru configuration for Control Net.

  • Why is it necessary to move the stable diffusion models to a specific directory?

    -The models need to be moved to the directory that stable diffusion expects them to be in, as only files stored in the /workspace directory are included in the volume.

  • How does one create a serverless endpoint for the stable diffusion API?

    -To create a serverless endpoint, one goes to the 'Serverless' section in RunPod, creates a new template using a pre-built Docker image from Docker Hub, and then creates a new endpoint using that template, linking it to the previously configured network volume.

  • What is the simplest option for creating a serverless endpoint?

    -The simplest option is to use a pre-built Docker image from Docker Hub without modification and create a new template in RunPod referencing that image.

  • How can one test the serverless stable diffusion API?

    -The API can be tested using Postman, by first installing the Postman configuration file provided in the tutorial, updating the serverless ID and API key in the variables, and then making API calls to check the availability of control net models and to generate images with or without control net.

  • What is the process to obtain a base64 encoded string for an image to use with Control Net?

    -To obtain a base64 encoded string, one uploads an image to the website provided in the helper file, copies the encoded string, pastes it into a text file, and removes the 'data:image' prefix.

  • How can one ensure that text image generation is working with Control Net?

    -One can ensure text image generation is working by making an API call using the Control Net with a specific prompt and the base64 encoded string of an image, and observing the generated image output.

  • What is the importance of feedback and subscription to the channel for future tutorials?

    -Feedback helps the creators improve content quality, and subscribing to the channel ensures that viewers are updated with the latest tutorials on generative AI and generative media tools and techniques.



πŸ˜€ Setting Up a Stable Diffusion API with Serverless Technology

This paragraph introduces the tutorial's focus on creating a stable diffusion API using serverless technology. It emphasizes the ease of configuration by eliminating the need for Docker file setup, and instead, using an A1111 console for managing the diffusion configuration. The process involves creating a network volume, deploying a pod, and utilizing run pod technologies to install and configure stable diffusion. The tutorial also guides on how to adjust configurations by restarting the stable diffusion pod and making changes in the A1111 console. It outlines the steps to create a network volume, develop a serverless API, and test the setup using Postman, including moving stable diffusion models to the correct directory and removing unnecessary symbolic links.


πŸ“š Creating a Serverless Endpoint and Testing with Postman

The second paragraph details the steps to create a serverless endpoint for the stable diffusion API. It presents two options: using a pre-built Docker image from Docker Hub or building a custom one using provided code. The video assumes viewers will opt for the simpler pre-built image route. It guides through creating a new template in run pod, naming it, referencing the Docker Hub image, and setting up a new endpoint. The paragraph also covers linking a network volume, copying the Serverless Endpoint API ID, and testing the setup using Postman with a provided configuration file. It explains how to update variables in Postman, make API calls to retrieve control net models, and generate images with and without control net using specific arguments and base64 encoded images.


🎨 Using Control Net for Text Image Generation

The final paragraph demonstrates how to use the Cannae module with a base64 encoded string of a black and white silhouette image of the letter 'A' for text image generation with control net. It instructs on obtaining the base64 encoded string using a provided website, copying it, and preparing it for the API call by removing the data image prefix. The tutorial concludes with a prompt to try different prompts with the same image and ends by encouraging viewers to like, subscribe, and provide feedback for future content. It highlights the channel's commitment to creating new content on generative AI and media.



πŸ’‘Stable Diffusion API

A Stable Diffusion API is a set of protocols and tools for building software applications that interact with the Stable Diffusion system, which is a type of generative model used for creating images from textual descriptions. In the video, it is the core technology being set up with the help of RunPod's serverless capabilities, allowing users to access and utilize the Stable Diffusion models without the complexity of Docker configuration.

πŸ’‘Control Net

Control Net is a feature or module that allows for more directed control over the image generation process in Stable Diffusion. It is used to guide the model to produce images that adhere to specific stylistic or thematic constraints. In the context of the video, Control Net is being integrated with the Stable Diffusion API to enhance the customization of the generated images.

πŸ’‘RunPod Serverless

RunPod Serverless is a cloud computing service that allows users to deploy and run applications without the need to manage the underlying infrastructure. The video discusses using RunPod Serverless to simplify the process of setting up and maintaining a Stable Diffusion API, by abstracting away the complexities of Docker and providing a more accessible interface for configuration and deployment.

πŸ’‘Network Volume

A network volume in the context of the video refers to a storage system that is accessible over a network. It is used to install and store the Stable Diffusion models. The video outlines the creation of a network volume on RunPod, which is essential for the persistent storage of the models and ensuring that they are available to the API.


Docker is a platform that enables developers to develop, ship, and run applications in containers. Containers are lightweight, standalone, and executable packages of software that include everything needed to run a piece of software, including the code, runtime, system tools, libraries, and settings. In the video, Docker is mentioned as a tool that is being bypassed for easier configuration through RunPod Serverless.

πŸ’‘Serverless Endpoint

A serverless endpoint is a URL through which clients can access a serverless function or service. In the video, creating a serverless endpoint involves setting up a template in RunPod that references a Docker image and is used to expose the Stable Diffusion functionality over the internet without managing servers.


Postman is a popular API development and testing tool that allows users to test and explore APIs. In the video, Postman is used to test the Stable Diffusion API by sending requests and observing the responses. It is instrumental in verifying that the API is functioning correctly and that the image generation meets the expected outcomes.

πŸ’‘Base64 Encoded String

A Base64 encoded string is a text string that represents binary data encoded in a way that can be easily transmitted over text-based systems. In the context of the video, a Base64 encoded string is used to represent an image (a black and white silhouette of the letter 'A') which is then provided as an argument to the Control Net feature for image generation.

πŸ’‘Control Net Arguments

Control Net arguments are specific parameters or inputs provided to the Control Net module to influence the style and content of the generated images. The video demonstrates how to use these arguments with an example of the Cannae module and a Base64 encoded image to guide the Stable Diffusion model in creating controlled outputs.

πŸ’‘API Key

An API key is a unique identifier used to authenticate a user, developer, or calling program to an API. It is a form of token-based access that is passed along with the request to the API to verify the identity of the requester. In the video, the API key is mentioned in the context of setting up and using the Stable Diffusion API with Postman.

πŸ’‘Helper File

A helper file, as mentioned in the video, is a supplementary document or resource that provides additional information, steps, or guidance to assist users in completing a task. In this case, the helper file contains links to resources and detailed instructions that support the setup and testing of the Stable Diffusion API.


Setting up a stable diffusion API with Control Net using RunPod serverless eliminates the need for Docker configuration.

Stable diffusion fusion configuration can be managed outside of Docker through the A1111 console.

RunPod technologies are used to create a network drive, install, and configure stable diffusion, then establish a serverless API.

A network volume is created to install stable diffusion on the network volume.

A serverless stable diffusion API is developed and tested using Postman.

100 gigabytes of storage capacity are allocated for robust model storage.

Control Net configuration involves installing the Kanemaru module.

Stable diffusion models must be moved to the expected directory path for the volume to include them.

Preset symbolic links need to be removed from the stable diffusion model directory.

Launching A1111 requires verifying its start and stop through the appearance of a number and exit message.

Two options are available for creating the serverless endpoint: using a pre-built Docker image or building your own.

A pre-built Docker image from Docker Hub can be used for the simplest serverless endpoint setup.

Serverless endpoint creation involves linking a network volume and using a template.

Postman is used to test the serverless API with a configuration file provided in the tutorial.

Control Net models can be listed and utilized through specific API calls.

Text image generation can be performed with or without using Control Net, utilizing base64 encoded images.

A website is provided to obtain base64 encoded strings for testing images.

The tutorial concludes with a prompt to give feedback and subscribe for more generative AI and media tutorials.