# ask-ai

Greg H

03/13/2024, 8:28 PM
I'm trying to run dagster in docker, locally and my entrypoint is "dagster-webserver -p 3003:3000". This leads to an error: UserWarning: Error loading repository location devException gRPC server exited with return code -4 while starting up with the command: "/dagster/.venv/bin/python -m dagster api grpc --lazy-load-user-code --socket /tmp/tmpea2solu2 --heartbeat --heartbeat-timeout 45...


03/13/2024, 8:28 PM
Based on the documentation, when you encounter an error with the gRPC server exiting with a specific return code while starting up, it could be indicative of a few different issues. The return code -4, as mentioned in a Github issue, suggests that the process was terminated with signal 4 (SIGILL), which occurs when the CPU encounters an illegal instruction. This could be due to a compatibility issue with the container and the runtime or with a compiled binary used in a dependency. In the specific case you're describing, it seems like there might be a problem with how the gRPC server is being initialized within your Docker container. The documentation provides guidance on how to run your own gRPC server, which includes specifying a target file or module, host address, and port or socket. Here's a general example of how to initialize a gRPC server using a Python file:
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dagster api grpc --python-file /path/to/ --host --port 4266
However, the error you're encountering could be related to several factors, including but not limited to: 1. Compatibility issues with the Python environment or dependencies within the Docker container. 2. Incorrect configuration or command syntax for starting the gRPC server. 3. Network or permission issues within the Docker container that prevent the gRPC server from starting correctly. To troubleshoot this issue, you may want to: - Ensure that all dependencies are correctly installed and compatible with the environment you're running Dagster in. - Verify that the command to start the gRPC server is correctly formatted and includes all necessary arguments. - Check the Docker container's logs for more detailed error messages that might provide additional context. - Ensure that the Docker container has the necessary network permissions and that there are no conflicts with the ports being used. If you continue to face issues, you might want to refer to the full list of options that can be set when running a new gRPC server, as mentioned in the documentation, or seek further assistance from the Dagster community or support channels.