Deploying and Using the Stable Diffusion Application

Step 1: Creating a Cloud Service Agency for FunctionGraph

To deploy a Stable Diffusion application, you need to configure an agency for FunctionGraph to allow it to use other cloud services.

1. Log in to the IAM console. In the navigation pane, choose Agencies. On the Agencies page that is displayed, click Create Agency in the upper right corner.
2. Set the following parameters:
   • Agency Name: Enter serverless_trust.
   • Agency Type: Select Cloud service.
   • Cloud Service: Select FunctionGraph.
   • Validity Period: Select Unlimited.
   • (Optional) Description: Enter Stable Diffusion.

3. Click OK. The system displays a message indicating that the creation is successful. Click Authorize.
4. On the Select Policy/Role page, search for the policies listed in Table 1 as required, select them, and click Next.

   Table 1 Policies and related description

   Policy	Description	Mandatory
   SWR Admin	SoftWare Repository for Container (SWR) administrator with full permissions.	Yes
   VPC Administrator (The system will select the Server Administrator system role that the system role depends on. You do not need to manually cancel the selection.)	VPC Administrator: administrator of the VPC service. Server Administrator: server administrator.	Mandatory for uploading and using a custom model.
   SFS FullAccess	Full permissions for SFS	Mandatory for mounting an SFS file system.
   SFS Turbo FullAccess	Full permissions for SFS Turbo.	Mandatory for mounting an SFS file system.

5. On the Select Scope page shown in Figure 1, select Region-specific projects, select cn-east-3 [CN East-Shanghai1], and click OK.
   Figure 1 Region-specific projects
   

6. After the authorization is successful, click Finish to view the authorization record.

Step 2: Buying a Dedicated Gateway

Step 3: Creating an Application Using the Stable Diffusion Template

1. Log in to the FunctionGraph console and select CN East-Shanghai1 region. In the navigation pane on the left, choose Applications. In the upper right corner, click Create. The page for selecting a template is displayed.
2. As shown in Figure 2, find the AI Drawing Stable-Diffusion template and click Create Application. Read the displayed description carefully, select the check box, and click Agree and Continue.
   Figure 2 Selecting the AI Drawing Stable-Diffusion template
   
   

   If the Service Subscription dialog box is displayed, read the description and click Enable Now.

3. On the Configure Application page, set application parameters as shown in Figure 3. After setting the parameters, click Create Now in the lower right corner of the page.
   • Application Name: Enter a custom name or use the default name.
   • Agency: Select the serverless_trust agency created in Step 1: Creating a Cloud Service Agency for FunctionGraph.
   • APIG Instance: Select the gateway created in Step 2: Buying a Dedicated Gateway.
     Figure 3 Application configuration
     

4. Wait until the application is created. The application contains resources such as functions, API gateways, and triggers, as shown in Figure 4. For details about the key resources of FunctionGraph, see Table 2.
   To make it easier for you to experience the feature, a temporary domain name is allocated to you. The temporary domain name can be used only for testing and is valid for 30 days. To allow long-term access to applications, bind a custom domain name. For details, see (Optional) Binding a Custom Domain Name.

   Figure 4 Application created
   

   Table 2 Key function services

   Resource Logical Name	Description
   stable_diffusion	Accesses the Stable Diffusion WebUI through the APIG trigger.
   custom_models_tool	Manages Stable Diffusion resources (uploading models and plug-ins and downloading images) via the APIG trigger.

Step 3: Using the Default Model and Temporary Domain Name for AI Drawing

1. On the application details page shown in Figure 5, click Access Application. The Stable Diffusion WebUI page is displayed. The first cold start takes about 30 seconds. If the loading times out, refresh the page.
   Figure 5 Accessing the application
   

2. On the txt2img tab page, enter the corresponding prompt word and reverse prompt (in both Chinese and English), and click Generate on the right. An image that matches the prompt word description is generated.
   Figure 6 Stable Diffusion WebUI
   
   

   The application created in the preceding steps can only use the default model built in the application for AI drawing. If you want to use more custom models, you need to mount an external file system to the application. For details, see (Optional) Uploading a Custom Model.