Tara Larrue
02/16/2024, 3:13 PMScout
02/16/2024, 3:13 PMdocker build
with the appropriate context and tag for each Dockerfile. 3. Configure Your Workspace: In your workspace.yaml
file, you can specify multiple code locations by using the load_from
key. For each code location, you would specify the Docker image that should be used. Here's an example snippet from the documentation: yaml load_from: - python_file: relative_path: path/to/dataengineering_spark_team.py location_name: dataengineering_spark_team_py_38_virtual_env executable_path: venvs/path/to/dataengineering_spark_team/bin/python - python_file: relative_path: path/to/team_code_location.py location_name: ml_team_py_36_virtual_env executable_path: venvs/path/to/ml_tensorflow/bin/python
In a containerized environment, you would replace the executable_path
with the Docker image you built for each code location. 4. Run Your gRPC Servers: Each code location will need to run its own gRPC server. You can start these servers in their respective Docker containers. Ensure that the DAGSTER_CURRENT_IMAGE
environment variable is set to the name of the Docker image before starting the server, as this will inform the webserver about the Docker image to use for runs launched from that code location. 5. Launch Runs: When you launch runs from these code locations, the system will use the Docker images specified in the workspace.yaml
file. If you're using run launchers or executors that expect to use Docker images, such as DockerRunLauncher
or docker_executor
, they will use the images you've specified. Please note that the above steps are a high-level guide. The specifics of how you configure your workspace and run your gRPC servers may vary depending on your local setup and the version of Dagster you are using. Always refer to the latest Dagster documentation for the most accurate and detailed instructions.Tara Larrue
02/16/2024, 3:22 PMdagster dev
command I would use to deploy locally? And if deploying to k8s, how do I apply changes to workspace.yaml?Scout
02/16/2024, 3:22 PMdagster dev
command to run your Dagster instance, which includes Dagit (the web interface) and the Dagster daemon. This command is designed for local development and testing, and it's not suitable for production deployments. When using dagster dev
, you don't explicitly "deploy" in the same sense as you would in a Kubernetes environment. Instead, you run your Dagster instance locally with the configuration specified in your workspace.yaml
file. The dagster dev
command automatically picks up changes in your workspace.yaml
file when you start or restart the command. Here's how you would use dagster dev
for local development: shell dagster dev
This command will start the development environment using the configuration specified in your workspace.yaml
file. If you have multiple containerized code locations, you would ensure that each gRPC server for your code locations is running in its respective Docker container, and the workspace.yaml
file would reference these gRPC servers. For deploying to Kubernetes, you would typically use Helm charts to manage your deployments. If you make changes to your workspace.yaml
file and want to apply these changes to your Kubernetes deployment, you would need to rebuild your Docker images if the changes affect the Dockerfile or the code within the images. Then, you would update your Helm chart values to reference the new Docker images and any other configuration changes. Here's a high-level overview of the steps to apply changes to a Kubernetes deployment: 1. Rebuild Docker Images: If necessary, rebuild your Docker images with the updated code or dependencies. 2. Push Docker Images: Push the updated Docker images to your container registry. 3. Update Helm Chart: Modify your Helm chart's values.yaml
file to reference the new Docker images and any other changes you've made to your workspace.yaml
or other configuration files. 4. Deploy with Helm: Apply the changes to your Kubernetes cluster using Helm: shell helm upgrade [RELEASE_NAME] [CHART] --values [VALUES_FILE]
Replace [RELEASE_NAME]
with the name of your Helm release, [CHART]
with the path to your Helm chart, and [VALUES_FILE]
with the path to your values.yaml
file. Please note that the specifics of how you apply these changes can vary depending on your Kubernetes setup and the Helm chart you are using. Always refer to the latest Dagster documentation and your Helm chart documentation for the most accurate and detailed instructions.Tara Larrue
02/16/2024, 3:25 PMScout
02/16/2024, 3:25 PMDockerfile FROM python:3.8-slim # Install Dagster RUN pip install dagster dagster-graphql # Set the DAGSTER_HOME environment variable ENV DAGSTER_HOME=/opt/dagster/dagster_home # Create the DAGSTER_HOME directory RUN mkdir -p $DAGSTER_HOME # Copy your Dagster repository code and other necessary files WORKDIR /opt/dagster/app COPY . /opt/dagster/app # Expose the port that the gRPC server will run on EXPOSE 4000 # Start the Dagster gRPC server CMD ["dagster", "api", "grpc", "-h", "0.0.0.0", "-p", "4000", "-f", "repo.py"]
Replace repo.py
with the path to your Dagster repository file within the container. 2. Build Your Docker Images: Build the Docker image for each code location using the Dockerfile. shell docker build -t my-dagster-repo-image .
3. Run the Docker Containers: Start a Docker container from each image, which will run the gRPC server. shell docker run -d -p 4000:4000 my-dagster-repo-image
The -d
flag runs the container in detached mode, and -p
maps the container's port to a port on the host machine. Make sure to use different host ports if you're running multiple containers on the same host. 4. Configure Your workspace.yaml
: In your workspace.yaml
file, you'll need to specify the gRPC servers for each code location. Here's an example configuration: yaml load_from: - grpc_server: host: localhost port: 4000 location_name: "my_dagster_repo"
If you have multiple containers, you would add additional entries under load_from
with the appropriate host and port for each gRPC server. 5. Start Your Local Dagster Instance: Use the dagster dev
command to start your local Dagster instance, which will now connect to the gRPC servers running in your Docker containers. By following these steps, you can run the gRPC server in each Docker container, allowing your local Dagster instance to load code from multiple containerized environments.Tara Larrue
02/16/2024, 3:37 PMScout
02/16/2024, 3:37 PMworkspace.yaml
file that specifies two code locations, each referring to a Docker image running a gRPC server locally. Each gRPC server is running on a different port to avoid conflicts. yaml load_from: - grpc_server: host: localhost port: 4000 location_name: "code_location_one" - grpc_server: host: localhost port: 4001 location_name: "code_location_two"
In this example: - The first code location is named code_location_one
and is served by a gRPC server running on localhost
at port 4000
. - The second code location is named code_location_two
and is served by a gRPC server running on localhost
at port 4001
. Each grpc_server
entry corresponds to a Docker container running a gRPC server that serves a Dagster repository. The host
should be set to localhost
if you're running the Docker containers on your local machine. The port
should match the port you've exposed and mapped when you started the Docker container. Make sure that the Docker containers for these gRPC servers are running and that the ports specified in the workspace.yaml
file are correctly mapped to the ports exposed by the containers.