https://dagster.io/ logo
#ask-ai
Title
# ask-ai
p

Peter Mburu

03/08/2024, 9:28 AM
@Scout fix this command: gosu django ddtrace-run dagster-webserver -h 0.0.0.0 -p 3000 -m pipelines --path-prefix apps/dagster_pipelines $*
s

Scout

03/08/2024, 9:28 AM
Based on the documentation, the
dagster-webserver
command is used to run the Dagster webserver, which serves the Dagit UI and interacts with your Dagster instance. The command you've provided seems to be intended to run the Dagster webserver with the
ddtrace-run
wrapper for Datadog tracing, using
gosu
to change the user to
django
. Here's a breakdown of the command you've provided: - `gosu django`: This part of the command is used to switch the current user to
django
before executing the subsequent command. - `ddtrace-run`: This is a wrapper provided by the
dd-trace
package for Python, which instruments your application to send traces to Datadog. - `dagster-webserver`: This is the command to run the Dagster webserver. - `-h 0.0.0.0`: This option sets the host for the webserver, allowing it to be accessible from any IP address. - `-p 3000`: This sets the port on which the webserver will listen. - `-m pipelines`: This option specifies the module where Dagster definitions reside as top-level symbols/variables and loads the module as a code location in the current Python environment. - `--path-prefix apps/dagster_pipelines`: This option is not explicitly documented in the provided documentation. However, it seems to be intended to set a URL path prefix for the webserver, which is useful when hosting Dagit behind a reverse proxy or in a subpath. - `$*`: This is a shell syntax that expands to all the positional parameters passed to the script or command, starting from the first one. If the
--path-prefix
option is not working as expected, it's possible that it's not supported by the version of Dagster you are using, or it might be an incorrect usage. The documentation does not provide details on a
--path-prefix
option for the
dagster-webserver
command. To address the issue, you should ensure that you are using the correct and supported options for the
dagster-webserver
command. If
--path-prefix
is not supported, you may need to configure the path prefix at the reverse proxy level instead of the Dagster webserver level. If you continue to experience issues, please check the Dagster version you are using and consult the latest documentation or release notes for any changes or additional flags that may be relevant to your use case.
p

Peter Mburu

03/08/2024, 9:38 AM
@Scout fix this command: gosu django ddtrace-run dagster-webserver -h 0.0.0.0 -p 3000 -m apps/dagster_pipelines dagster_webserver-1 | 2024-03-08 093755 +0000 - dagster.code_server - ERROR - Error while importing code dagster_webserver-1 | Traceback (most recent call last): dagster_webserver-1 | File "/usr/local/lib/python3.8/site-packages/dagster/_core/code_pointer.py", line 135, in load_python_module dagster_webserver-1 | return importlib.import_module(module_name) dagster_webserver-1 | File "/usr/local/lib/python3.8/importlib/__init__.py", line 127, in import_module dagster_webserver-1 | return _bootstrap._gcd_import(name[level:], package, level) dagster_webserver-1 | File "<frozen importlib._bootstrap>", line 1014, in _gcd_import dagster_webserver-1 | File "<frozen importlib._bootstrap>", line 991, in _find_and_load dagster_webserver-1 | File "<frozen importlib._bootstrap>", line 973, in _find_and_load_unlocked dagster_webserver-1 | ModuleNotFoundError: No module named 'apps/dagster_pipelines' dagster_webserver-1 | dagster_webserver-1 | The above exception was the direct cause of the following exception: dagster_webserver-1 | dagster_webserver-1 | Traceback (most recent call last): dagster_webserver-1 | File "/usr/local/lib/python3.8/site-packages/dagster/_grpc/server.py", line 408, in init dagster_webserver-1 | self._loaded_repositories: Optional[LoadedRepositories] = LoadedRepositories( dagster_webserver-1 | File "/usr/local/lib/python3.8/site-packages/dagster/_grpc/server.py", line 242, in init dagster_webserver-1 | loadable_targets = get_loadable_targets( dagster_webserver-1 | File "/usr/local/lib/python3.8/site-packages/dagster/_grpc/utils.py", line 50, in get_loadable_targets dagster_webserver-1 | else loadable_targets_from_python_module(module_name, working_directory) dagster_webserver-1 | File "/usr/local/lib/python3.8/site-packages/dagster/_core/workspace/autodiscovery.py", line 35, in loadable_targets_from_python_module dagster_webserver-1 | module = load_python_module( dagster_webserver-1 | File "/usr/local/lib/python3.8/site-packages/dagster/_core/code_pointer.py", line 140, in load_python_module dagster_webserver-1 | raise DagsterImportError( dagster_webserver-1 | dagster._core.errors.DagsterImportError: Encountered ImportError:
No module named 'apps/dagster_pipelines'
while importing module apps/dagster_pipelines. Local modules were resolved using the working directory
/usr/src/app
. If another working directory should be used, please explicitly specify the appropriate path using the
-d
or
--working-directory
for CLI based targets or the
working_directory
configuration option for workspace targets. dagster_webserver-1 | 2024-03-08 093755 +0000 - dagster.code_server - INFO - Started Dagster code server for module apps/dagster_pipelines in process 56 dagster_webserver-1 | 2024-03-08 093755 +0000 - dagster-webserver - INFO - Serving dagster-webserver on http://0.0.0.0:3000/pipelines in process 46
s

Scout

03/08/2024, 9:38 AM
The error message indicates that the module
apps/dagster_pipelines
cannot be found. This is likely because the Python path does not include the directory where this module is located. The error message also suggests that if the working directory should be different, you should specify it explicitly using the
-d
or
--working-directory
option. To fix this command, you need to ensure that the
apps/dagster_pipelines
module is in the Python path or adjust the working directory accordingly. If the
apps/dagster_pipelines
directory is a subdirectory of
/usr/src/app
, then the command should work as expected, since the error message indicates that
/usr/src/app
is being used as the working directory. However, if
apps/dagster_pipelines
is not a subdirectory of
/usr/src/app
, or if it is not in the Python path, you will need to adjust the working directory using the
-d
or
--working-directory
option to point to the correct location of the
apps/dagster_pipelines
module. Here's how you might adjust the command:
Copy code
bash gosu django ddtrace-run dagster-webserver -h 0.0.0.0 -p 3000 -m apps.dagster_pipelines -d /path/to/your/modules
Replace
/path/to/your/modules
with the actual path to the directory containing your
apps
directory. Please note that the
-m
option expects a Python module path using dot notation, not a file path. So, if
apps/dagster_pipelines
is a Python package, it should be referenced as
apps.dagster_pipelines
(with a dot) rather than
apps/dagster_pipelines
(with a slash). Make sure that the directory structure of your project is correct and that the
apps/dagster_pipelines
directory contains an
__init__.py
file to be recognized as a Python package. If the structure is correct and the package is still not found, you may need to add the parent directory of
apps
to the
PYTHONPATH
environment variable or use the
-d
option to specify the working directory as shown above.
4 Views