<@ULVA73B9P> how to run prefect server in a docker...
# ask-community
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@Marvin how to run prefect server in a docker container in nomd
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Running Prefect in a Docker container involves a few steps, depending on whether you're using Prefect 2.x or 3.x. Here are some general guidelines for each version: For Prefect 2.x: 1. Set up the Prefect API URL: It's important to configure the communication between your Docker container and the Prefect server. You can set the
PREFECT_API_URL
environment variable appropriately. For Windows and macOS, you might set it to
<http://host.docker.internal:4200/api>
. If you are on Linux, set it to
<http://localhost:4200/api>
and use the
--network="host"
option. 2. Run the Docker command: Use a command like:
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docker run --network="host" -e PREFECT_API_URL=<http://host.docker.internal:4200/api> prefect-docker-guide-image
This ensures that your flow container communicates with the Prefect API. Useful link to guide on Docker image deployment: Prefect 2.x Docker Guide For Prefect 3.x: 1. Set up a PostgreSQL instance: Prefect 3.x may require a PostgreSQL database. Create a Docker container for PostgreSQL:
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docker run -d --name prefect-postgres -v prefectdb:/var/lib/postgresql/data -p 5432:5432 -e POSTGRES_USER=postgres -e POSTGRES_PASSWORD=yourTopSecretPassword -e POSTGRES_DB=prefect postgres:latest
This command creates a database
prefect
with the specified user and password. 2. Configure Prefect to use the PostgreSQL database: Set your Prefect configuration to use this database connection URL:
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prefect config set PREFECT_API_DATABASE_CONNECTION_URL="<postgresql+asyncpg://postgres:yourTopSecretPassword@localhost:5432/prefect>"
Useful link to self-hosting guide for Prefect 3.x: Prefect 3.0 Manage Self-Host These steps should help you get the Prefect server running in a Docker container, but be aware that specific details may vary based on your operating system or specific setup requirements.
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@Marvin How to host Prefect Server in a container in the cloud.
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To host a Prefect Server in a container within the cloud, such as on Google Cloud, AWS, or Azure, you can use Kubernetes or directly deploy Docker containers. Here's a general step-by-step approach applicable to both Prefect 2.x and 3.x, tailored for cloud deployment: ### Prefect 2.x 1. Kubernetes Deployment: - Use the Prefect Helm chart to deploy Prefect onto a Kubernetes cluster. The Helm chart provides templates to configure and deploy all necessary Prefect Server components. - You can find a guide for this in the Prefect documentation: Kubernetes and Helm Chart Setup. 2. Configure API URL: - Set up the API URL to ensure that your containers can communicate with your server. This is required when deploying Prefect inside a container in the cloud. - Example command to set API URL:
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prefect config set PREFECT_API_URL="http://<your-prefect-cloud-url>/api"
- More details are available at the Prefect Hosting Guide. ### Prefect 3.x 1. Using Docker and Kubernetes: - Prefect 3.x can benefit greatly from using Docker for containerizing applications. Use Kubernetes to manage and orchestrate these containers in the cloud. - Start by storing your flow code and dependencies in a Docker image, and deploy it on Kubernetes as documented here. 2. Prefect Cloud Configuration: - Connect to Prefect Cloud by creating an API key and setting it in your cloud infrastructure. - Ensure your Prefect client in the container is pointed to the correct server using:
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prefect config set PREFECT_API_URL=http://<your-prefect-server-IP>:4200
3. Leveraging Cloud Storage: - Use cloud storage solutions like AWS S3, Azure Blob Storage, or GCP GCS buckets to store your Prefect flow code. Configure these in your
prefect.yaml
. These steps allow you to smoothly host and manage Prefect Server in the cloud, taking advantage of cloud orchestration and storage solutions to scale efficiently. For more detailed guidance, you can visit the Prefect 3.0 Kubernetes Guide or the Prefect 3.0 Deployment Guide.