GitHub user dosubot[bot] added a comment to the discussion: superset_app_root
doesn't work in superset 4.1.2 with nginx
<!-- Answer -->
To resolve the 404 error when accessing Apache Superset 4.1.2 with a custom
application root '/analytics' in a Kubernetes environment using Nginx as a
proxy, ensure that the `SUPERSET_APP_ROOT` is correctly configured. You can do
this by setting the `SUPERSET_APP_ROOT` environment variable to '/analytics'.
Additionally, ensure that your Nginx configuration correctly forwards requests
to the Superset application with the '/analytics' prefix.
Here is how you can set the `SUPERSET_APP_ROOT`:
```sh
FLASK_APP="superset:create_app(superset_app_root='/analytics')"
```
Or, if you are using Docker:
```sh
SUPERSET_APP_ROOT='/analytics'
```
Make sure your Nginx configuration is set to handle the '/analytics' path
correctly, forwarding it to the Superset service. This might involve setting up
a location block in your Nginx configuration like this:
```nginx
location /analytics/ {
proxy_pass http://your-superset-service/analytics/;
proxy_set_header Host $host;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header X-Forwarded-Proto $scheme;
}
```
Ensure that the Nginx configuration and the Superset application root are
consistent with each other
<sup>[[1]](https://github.com/apache/superset/blob/master/docs/docs/configuration/configuring-superset.mdx)</sup>.
Additionally, when using a reverse proxy with a custom application root, you
should enable the `ENABLE_PROXY_FIX` setting in the Superset configuration to
ensure that all X-Forwarded headers are used correctly. This is important when
Superset is behind a reverse proxy. You can do this by setting:
```py
ENABLE_PROXY_FIX = True
```
Furthermore, ensure that the `X-Script-Name` header is set correctly in your
Nginx configuration to match the prefix
<sup>[[1]](https://github.com/apache/superset/blob/master/docs/docs/configuration/configuring-superset.mdx)</sup><sup>[[2]](https://github.com/apache/superset/blob/master/superset/config.py)</sup>.
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GitHub link:
https://github.com/apache/superset/discussions/33229#discussioncomment-12936470
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