<@ULVA73B9P> Is there a way to schedule a deployme...
# ask-marvin
a
@Marvin Is there a way to schedule a deployment which runs if its previous run was successful ?
m
In Prefect, scheduling flows based on the success of the previous run isn't directly built into the scheduling framework using just cron or intervals. However, you can achieve this functionality by using Prefect's automation features in both versions. For Prefect 2.x and 3.x, you can employ event-driven automations or use Prefect's orchestration features: 1. Event-Driven Automations: You can set up automations that are triggered by events, such as the successful completion of a flow. This would involve configuring an automation that listens for a "flow run success" event and triggers a new flow run when it occurs. - Prefect 3.x Automation Guide: Automations &amp; Triggers - Prefect 2.x Schedules Guide: Scheduled Flows 2. Conditional Execution Logic: You may also build logic into your flow to conditionally schedule subsequent flows based on the results. This might involve using tasks that check the outcome of previous runs through Prefect's APIs. Here's a light and reality-check humor for you: scheduling flow runs is somewhat like waiting for the toast to pop before putting on the jam—a sensible sequence decision ensuring sweetness meets crunchy success. If you need more detailed guidance, don't hesitate to ask!
a
@Marvin How do you setup prefect v3 inside as a docker compose setup?
m
Setting up Prefect 3.0 with Docker Compose involves creating a Dockerfile and Docker Compose file that builds and runs your Prefect deployment inside a container. Here's a step-by-step overview to help you get started: 1. Create a Dockerfile: You will need a Dockerfile that sets up your environment. Here's a basic outline: - Use a suitable Python base image. - Install Prefect using
pip
. - Copy your flow script into the Docker image. - Set the command to run your Prefect flow. 2. Build and Run the Docker Image: Use the Docker CLI to build your image and run the container. Example commands could be:
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bash
   docker build -t your-image-name .
   docker run -e PREFECT_API_URL=YOUR_PREFECT_API_URL -e PREFECT_API_KEY=YOUR_API_KEY your-image-name
3. Setup Docker Compose: Create a
docker-compose.yml
file to define and manage multi-container Docker applications. Here’s a basic structure:
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yaml
    version: '3.8'

    services:
      prefect:
        build: .
        environment:
          - PREFECT_API_URL=YOUR_PREFECT_API_URL
          - PREFECT_API_KEY=YOUR_API_KEY
        command: [ "prefect", "agent", "start" ]
4. Generate Prefect API Key: You need to supply your Prefect credentials by creating an API key. You can do this from the Prefect dashboard. 5. Run Docker Compose: Execute the following command to bring up your Prefect deployment using Docker Compose:
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bash
   docker-compose up
For more detailed instructions and customization options, you might want to check Prefect's Docker infrastructure examples and dockerizing guidelines. I hope this helps! Deploying Prefect with Docker might initially seem like building a spaceship, but once it's done, you'll be flying through data flows effortlessly.