X-Git-Url: https://git.openstreetmap.org./nominatim.git/blobdiff_plain/afb439b089efd45a5393be8eb0c3e8877f1ff7a7..9545f0bf802f9a3bfe8263d5f170ebb390954e6a:/docs/admin/Deployment-Python.md diff --git a/docs/admin/Deployment-Python.md b/docs/admin/Deployment-Python.md index 6fd24167..9275bab8 100644 --- a/docs/admin/Deployment-Python.md +++ b/docs/admin/Deployment-Python.md @@ -1,6 +1,6 @@ # Deploying the Nominatim Python frontend -The Nominatim can be run as a Python-based +Nominatim can be run as a Python-based [ASGI web application](https://asgi.readthedocs.io/en/latest/). You have the choice between [Falcon](https://falcon.readthedocs.io/en/stable/) and [Starlette](https://www.starlette.io/) as the ASGI framework. @@ -12,30 +12,39 @@ to configure it. !!! Note Throughout this page, we assume your Nominatim project directory is - located in `/srv/nominatim-project` and you have installed Nominatim - using the default installation prefix `/usr/local`. If you have put it - somewhere else, you need to adjust the commands and configuration - accordingly. + located in `/srv/nominatim-project`. If you have put it somewhere else, + you need to adjust the commands and configuration accordingly. - We further assume that your web server runs as user `www-data`. Older - versions of CentOS may still use the user name `apache`. You also need - to adapt the instructions in this case. ### Installing the required packages +The Nominatim frontend is best run from its own virtual environment. If +you have already created one for the database backend during the +[installation](Installation.md#building-nominatim), you can use that. Otherwise +create one now with: + +```sh +sudo apt-get install virtualenv +virtualenv /srv/nominatim-venv +``` + +The Nominatim frontend is contained in the 'nominatim-api' package. To +install directly from the source tree run: + +```sh +cd Nominatim +/srv/nominatim-venv/bin/pip install packaging/nominatim-api +``` + The recommended way to deploy a Python ASGI application is to run the ASGI runner [uvicorn](https://uvicorn.org/) together with [gunicorn](https://gunicorn.org/) HTTP server. We use Falcon here as the web framework. -Create a virtual environment for the Python packages and install the necessary -dependencies: +Add the necessary packages to your virtual environment: ``` sh -sudo apt install virtualenv -virtualenv /srv/nominatim-venv -/srv/nominatim-venv/bin/pip install SQLAlchemy PyICU psycopg[binary] \ - psycopg2-binary python-dotenv PyYAML falcon uvicorn gunicorn +/srv/nominatim-venv/bin/pip install falcon uvicorn gunicorn ``` ### Setting up Nominatim as a systemd job @@ -44,7 +53,7 @@ Next you need to set up the service that runs the Nominatim frontend. This is easiest done with a systemd job. First you need to tell systemd to create a socket file to be used by -hunicorn. Crate the following file `/etc/systemd/system/nominatim.socket`: +hunicorn. Create the following file `/etc/systemd/system/nominatim.socket`: ``` systemd [Unit] @@ -69,11 +78,10 @@ Requires=nominatim.socket [Service] Type=simple -Environment="PYTHONPATH=/usr/local/lib/nominatim/lib-python/" User=www-data Group=www-data WorkingDirectory=/srv/nominatim-project -ExecStart=/srv/nominatim-venv/bin/gunicorn -b unix:/run/nominatim.sock -w 4 -k uvicorn.workers.UvicornWorker nominatim.server.falcon.server:run_wsgi +ExecStart=/srv/nominatim-venv/bin/gunicorn -b unix:/run/nominatim.sock -w 4 -k uvicorn.workers.UvicornWorker nominatim_api.server.falcon.server:run_wsgi ExecReload=/bin/kill -s HUP $MAINPID StandardOutput=append:/var/log/gunicorn-nominatim.log StandardError=inherit