<@ULVA73B9P> my flow is failing when I reference a...
# ask-marvin
k
@Marvin my flow is failing when I reference any integration that requires an install, I receive a flow-run crashed on my worker deployed as an azure container instance. I currently have the integrations installing on startup but for some reason it appears that the worker running on the aci is not access the install
m
It sounds like you're facing a problem with integrating external packages when deploying Prefect flows on Azure Container Instances (ACI). This is often due to the environment not having access to or not properly installing the required packages. To help you better, I'll need to make sure which version of Prefect you are using. Once I confirm that, I can provide guidance or resources specific to that version. Can you let me know your Prefect version? If you're not sure, I can help you figure it out.
k
Prefect 3.x
@Marvin Prefect 3.x
m
Based on the Prefect 3.x documentation, here are a few points that may help address your issue with package installations for Prefect flows running in Azure Container Instances (ACI): 1. ACI Worker Setup: - Ensure that your ACI worker has the necessary permissions set up. This involves creating a custom role for the worker to create, monitor, and delete other container instances. More details are provided in this ACI Worker guide. 2. Worker Types and Packages: - Prefect workers execute flow runs and require additional packages for certain worker types. Make sure that the additional packages necessary for the Azure Container Instance worker are properly installed. You can find more about different worker types and their required packages in the workers documentation. 3. Handling Dependency Installations: - Ensure your Docker image used for the ACI has all required dependencies installed. Incorporate the package installation in the Dockerfile so that when a container instance is started, it already has everything pre-installed. 4. Continuous Deployment: - If you're using CI/CD, organize your code and dependencies correctly to ensure they are available in the respective environments, as described in the deployment guide. If these suggestions don't resolve your issue, consider checking container logs for any specific error messages during package installation or flow run initiations which might provide more insight into what might be missing. Let me know if you need more specific guidance or further help!
k
how can I add extra pip packages to my deployment yaml file for prefect-slack and prefect-email?
@Marvin how can I add extra pip packages to my deployment yaml file for prefect-slack and prefect-email?
m
To add extra pip packages like
prefect-slack
and
prefect-email
to your deployment with a YAML file in Prefect 3.x, you should specify these dependencies so that they are installed in the environment where your flow runs. Here's a general approach to do it: 1. Specify Extra Packages in your Dockerfile: If you are using a Docker-based deployment, you can add a line in your Dockerfile to install these packages. For example:
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RUN pip install prefect-slack prefect-email
This ensures that when your Docker image is built, these packages are included. 2. Use YAML for Configuration: Within your
prefect.yaml
, you can leverage YAML anchors and aliases to manage configurations which can include package installations if you are managing them in the script section. Here’s a conceptual idea:
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job:
     templates:
       install-packages: &install_packages
         name: install-deps
         script: |
           pip install prefect-slack prefect-email
This snippet can then be utilized wherever necessary in your deployment setup to ensure packages are installed. 3. Include in CI/CD Pipeline: - If your deployment involves a CI/CD setup, ensure these packages are listed in your requirements section in your
prefect.yaml
or referenced within your CI/CD scripts. For complete instructions, you might refer to both the Prefect 3.x Deployment YAML Documentation and information from the prefect-slack setup guide. Make sure that your YAML setup matches your infrastructure needs, such as using Docker or Kubernetes, and that your deployment scripts reflect the necessary package management. Let me know if you need further assistance or a more specific setup example!
k
@Marvin can you give an example of a complete deployment file with the extra pip packages included
m
To help you create a complete deployment file with extra pip packages included, such as
prefect-slack
and
prefect-email
, I'll provide you with an example using a typical Prefect YAML configuration for Docker-based deployment. This example will illustrate how you might structure the file to include package installations.
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yaml
name: prefect-deployment
description: An example deployment for Prefect with extra pip packages
version: 1

docker:
  image: prefecthq/prefect:latest  # or any base image you are using
  build:
    context: .
    dockerfile: Dockerfile  # Ensure this file contains package installations

infrastructure:
  type: docker-container  # or your target environment
  env_vars:
    PREFECT_API_URL: "<http://api.your-prefect-instance.com>"

flows:
  - name: example-flow
    script: |
      # Place flow script or reference to Python file
      from prefect import flow

      @flow
      def example_flow():
          print("This is an example flow running with additional packages.")
 
work_pool:
  name: example-work-pool
  type: docker

packages:
  - prefect-slack
  - prefect-email

tasks:
  - name: example-task
    retries: 2
    timeout: 60  # seconds

job:
  templates:
    install-packages: &install_packages
      name: install-deps
      script: |
        pip install -r requirements.txt  # your reqs file with prefect-slack and prefect-email
    run-flow: 
      name: run-flow-job
      steps:
        - *install_packages

build:
  steps:
    - docker:
        command: pip install -r requirements.txt  # repeating for docker build cache optimization

deploy:
  strategy:
    schedule: "@daily"
    work_pool: example-work-pool
### Key Points in the Example: - Docker Setup: Specify a Docker base image and include the necessary commands to install extra packages within the Dockerfile (referenced by
docker:build
), leveraging the
pip install -r requirements.txt
which should include
prefect-slack
and
prefect-email
. - Packages Section: Explicitly list additional packages needed in the
packages
section to ensure visibility and management within the deployment file. - YAML Aliases and Anchors: Illustrates how to define repetitive scripts using YAML anchors to DRY (Don't Repeat Yourself) in your YAML configurations. This configuration assumes you are using Docker containers; however, adapt sections as needed for different infrastructure types like Kubernetes or Azure Container Instances. Always ensure that the deployment correctly aligns with your specific infrastructure requirements and network settings. Feel free to let me know if it's needed to refine details based on a different infrastructure setup.
k
is that example for prefect 3.x deployment yaml?
@Marvin is that example for prefect 3.x deployment yaml?
m
I apologize for any confusion. The example provided was a general idea and might not exactly match the specifics for Prefect 3.x deployment YAML structure. Let's focus on a simplified and correct structure for Prefect 3.x which is more in line with the current documentation. In Prefect 3.x, the deployment configuration is managed via the
prefect.yaml
file, focusing on Docker for the installation of Python packages. Here's an updated version of what your
prefect.yaml
could look like with extra pip packages:
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yaml
name: example-flow
version: 0.1.0
description: Example Prefect deployment with extra pip packages

build:
  - type: docker
    context: .
    dockerfile: Dockerfile

infrastructure:
  type: docker-container
  image: my-prefect-image:latest # Make sure this image installs the necessary packages

dependencies:
  - prefect-slack
  - prefect-email

work_pool:
  type: docker
  image: my-prefect-image:latest  # Same image as defined above
  
deployments:
  - name: example-deployment
    entrypoint: path/to/flow.py:example_flow  # Update with actual flow path
    schedule:
      interval: "every 1 hour"
Dockerfile:
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dockerfile
FROM prefecthq/prefect:latest

# Ensure extra packages are added
RUN pip install prefect-slack prefect-email
### Key Points: - Docker Build: The Docker build section specifies building a Docker image that includes the installation of additional packages (
prefect-slack
,
prefect-email
) directly in the Dockerfile. - Work Pool: Matches the Docker setup with an image that includes these dependencies. - Dependencies Section: Though shown for illustration, the relevant installation commands are now directly handled within the Docker build process. This setup ensures that when deploying to a Docker container, the image used has all required dependencies pre-installed. For precise instructions or modifications, always check the Prefect 3.x Deployment Docs. If there's any more detail or configuration necessary for your particular environment, feel free to ask!