@Marvin is it possible to generate api documentation for deployed prefect flows?

The search results indicate that Prefect deploys with an associated OpenAPI schema for parameters, which could serve as a starting point for generating API documentation. However, Prefect's native features related to generating exhaustive API documentation for deployed flows are not directly detailed in the documentation. You can edit certain parts of the deployment YAML before applying changes to include possibly necessary information that could be useful for generating documentation. For building API documentation, you would typically document the flow's parameters, triggers, and any endpoints associated with triggering the flow runs. Since Prefect does support REST API interactions, it's plausible to document these interactions similarly to other REST APIs. For more detailed information, you might want to check Prefect's guide on flows and deployments and infrastructure. If you want to generate API documentation that includes much more than the parameters OpenAPI schema, you might have to manually document the flows or use third-party tools that generate API documentation from OpenAPI schemas or RESTful APIs.

@Marvin I am looking for direction on how to create deployment from my repo that contains multiple flows. Because dependency requirements of some flows , I will need to use multiple Docker images From what I understand, one option is to 'bake' by flow code into a docker image and deploy it to a registry. With this option, Prefect can automatically build and push the docker image to my container registry when deploying. Another option is to use git based storage. This is the option that I am using. When deploying using this option, is there an option to push my image to a registry, or does this need to be a separate operation?

When deploying Prefect flows using git-based storage, pushing your docker image to a registry is generally a separate operation from the deployment process itself. However, there is an option within the Prefect deployment process that can build a Docker image with your flow code and push it to a registry. Based on the documentation, when you use the

prefect.deploy

command, Prefect can build a Docker image that 'bakes in' your flow code and push it to the Docker registry specified in the

image

argument. For this to work, your environment must be authenticated to your Docker registry. If you're using a registry other than Docker Hub, you must provide the full registry path in the

image

argument. This would essentially combine the operation of deploying your flow and pushing the Docker image. For more information on deploying flows and handling Docker images, please refer to: - Deployments Guide - Docker Storage Guide - Code and Storage Guide Note that the deployment process can be controlled via the

prefect.yaml

file, or through interactive prompts with

prefect deploy

. When authentication is needed, you can reference or automatically create Secret or Credential blocks. Please remember, if you have multiple flows with varying dependency requirements, you might consider segregating them into different deployments, potentially linked to different Docker images that contain the specific dependencies for each flow. This would give you control over the execution environment of each flow according to its unique needs.

@Marvin I am storing my code in github and want to use infra overrides to specify the docker image the code should run with. I am using a private container registry - how do I authenticate?

To use infrastructure overrides to specify the Docker image for your flows and authenticate with a private container registry when your code is stored in GitHub with Prefect, you will need to: 1. Specify the Docker Image in Infra Overrides: Use infrastructure overrides to indicate which Docker image your code should run with. This can typically be done when creating the deployment or at the time of running the flow. 2. Authenticate with the Private Container Registry: To properly authenticate with your private container registry, you will need to manage credentials securely within Prefect. Prefect doesn't have direct support for authenticating with private container registries in the documentation excerpts returned from the search. However, you would typically provide credentials either through environment variables or using a Prefect secret configured to hold your registry credentials. For Docker registries, you'd generally need to set the following environment variables for authentication: -

DOCKER_REGISTRY_USER

for the username -

DOCKER_REGISTRY_PASSWORD

for the password 3. Profiles and Configuration: You might have to configure your Prefect deployment settings such as the API server address for Prefect to work inside containers. This can be set using Prefect profiles or by directly configuring the environment. 4. Using an Image from a Private Registry in a Deployment/Infrastructure: When working with cloud infrastructures, like Google Cloud Run, you usually have to configure appropriate access controls. For your private docker registry, you should manage access by securely handling credentials. Documented details on using Docker registries or configuring Prefect's server and API settings can be found at: - Docker Guide - Host Guide - Google Cloud Run Guide Please note that while Prefect documentation provides guidance on how to specify and override work pool images, and how to configure the Prefect server for containerized environments, you may need to handle authentication to private registries via manual configuration of credentials or environment variables if specific documentation on private registry authentication is not available. It's likely that Prefect's secrets management system can be used for storing and accessing registry credentials securely as well.

people auth at two different times usually, at deploy time and at runtime. Lots of times, the place thats pulling at runtime is already authed (ECS/k8s cluster etc) but oftentimes at deployment time people will run some

docker login

command in a github action /

push

step