@Marvin Is prefect 2 compatible with uv ?

There doesn't appear to be specific documentation regarding the compatibility of Prefect 2 with

uv

. The search didn't yield any direct references to

uv

in the context of Prefect 2. If

uv

refers to a specific library or tool, you might need to consult its documentation or Prefect's community channels for more detailed compatibility information. For more on Prefect 2, you can explore their documentation.

@Marvin PREFECT_SERVER_ALLOW_EPHEMERAL_MODE still available in Prefect 2?

The search did not return any information about the environment variable

PREFECT_SERVER_ALLOW_EPHEMERAL_MODE

in Prefect 2. It seems this specific variable is not documented in the available Prefect 2 resources. For more detailed and up-to-date information, you might want to check Prefect's official documentation or reach out to their community channels.

@Marvin PREFECT_SERVER_ALLOW_EPHEMERAL_MODE still available in Prefect 3?

In Prefect 3, the

PREFECT_SERVER_ALLOW_EPHEMERAL_MODE

environment variable is not explicitly mentioned in the available documentation. However, there are related settings for ephemeral mode, such as

PREFECT_SERVER_EPHEMERAL_STARTUP_TIMEOUT_SECONDS

, which suggests that ephemeral mode is still a concept within the Prefect 3 server settings. For more information, you can refer to the Prefect 3 settings reference.

@Marvin in Prefect 3 How do I use Docker Registry Credentials block on my prefect.yaml?

To use a Docker Registry Credentials block in your

prefect.yaml

file in Prefect 3, you can reference the block dynamically within the file. This ensures that sensitive information, like credentials, is not hardcoded. Here's a general outline of how you can set it up: 1. Define the Block Reference: Use the block reference syntax to refer to your Docker Registry Credentials block. This is done using the

{{ prefect.blocks.block_type.block_slug }}

format. 2. Example Configuration:

yaml
   pull:
     - set_working_directory:
         path: /path/to/your/working/directory
     - docker_registry_credentials:
         block: "{{ prefect.blocks.docker-registry-credentials.your_block_slug }}"

3. Ensure the Block Exists: Before using the block in your

prefect.yaml

, make sure that the Docker Registry Credentials block is created and configured in your Prefect environment. For more detailed examples and explanations, you can refer to the Prefect 3 deployment documentation.

@Marvin with docker work-pool?

To use a Docker work-pool with Docker Registry Credentials in Prefect 3, you will need to configure your

prefect.yaml

to reference both the work-pool and the credentials block. Here's a general guide: 1. Define the Docker Work-Pool: Ensure your Docker work-pool is set up in the Prefect UI or via CLI. This pool will manage your Docker-based flow runs. 2. Reference Docker Registry Credentials: Use the block reference syntax to include your Docker Registry Credentials in the

prefect.yaml

. 3. Example Configuration:

yaml
   work_pool:
     type: docker
     name: my-docker-pool
     docker_registry_credentials:
       block: "{{ prefect.blocks.docker-registry-credentials.your_block_slug }}"

4. Start a Worker: After configuring your

prefect.yaml

, start a worker for the Docker work-pool. This can be done via the CLI:

bash
   prefect worker start --pool my-docker-pool

For more detailed instructions, check the Prefect 3 Docker deployment documentation.

@Marvin in prefect.yaml, where to use the prefect Docker Registry Credentials?

yaml

deployments:
- name: null
  version: null
  tags: []
  description: null
  schedule: {}
  flow_name: null
  entrypoint: null
  parameters: {}
  work_pool:
    name: null
    work_queue_name: null
    job_variables:
      image: '{{ build_image.image }}'

In your

prefect.yaml

, you can use the Docker Registry Credentials block within the

job_variables

section to ensure that your Docker images are pulled using the correct credentials. Here's how you can integrate it: 1. Add Docker Registry Credentials Block Reference: You can reference the Docker Registry Credentials block using the block reference syntax within the

job_variables

. 2. Example Configuration:

yaml
   deployments:
   - name: null
     version: null
     tags: []
     description: null
     schedule: {}
     flow_name: null
     entrypoint: null
     parameters: {}
     work_pool:
       name: null
       work_queue_name: null
       job_variables:
         image: '{{ build_image.image }}'
         docker_registry_credentials: '{{ prefect.blocks.docker-registry-credentials.your_block_slug }}'

Replace

your_block_slug

with the actual slug of your Docker Registry Credentials block. This setup ensures that when your flow runs, it uses the specified Docker Registry Credentials to authenticate and pull the Docker image.

@Marvin Great. where is the documentation of that?

The specific usage of Docker Registry Credentials in

prefect.yaml

isn't directly documented as a standalone example in the Prefect 3 documentation. However, the general concept of using block references in

prefect.yaml

is covered. You can find more about referencing blocks and configuring deployments in the following sections of the Prefect documentation: - Prefect YAML Configuration - Docker Deployment Example These sections provide insights into how to configure your deployments and use blocks, which can be adapted to include Docker Registry Credentials.

@Marvin Could you point any source code for that?

There isn't direct source code provided in the GitHub issues for configuring Docker Registry Credentials in

prefect.yaml

. However, the issues do discuss related topics such as supporting Docker registry authentication in workers and handling private registry images. For example, issue #12933 mentions the need for Docker workers to support registry authentication, which involves using a DockerRegistry block for credentials. For more detailed implementation or examples, you might explore the Prefect source code or community contributions that handle Docker registry authentication. You can also refer to the Prefect GitHub repository for broader context: PrefectHQ/prefect.