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45ea73913f
pyosmium is now called as a library from the python code, so that pyosmium-get-changes is no longer needed.
57 lines
2.0 KiB
Markdown
57 lines
2.0 KiB
Markdown
# Updating the Database
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There are many different ways to update your Nominatim database.
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The following section describes how to keep it up-to-date using
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an [online replication service for OpenStreetMap data](https://wiki.openstreetmap.org/wiki/Planet.osm/diffs)
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For a list of other methods to add or update data see the output of
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`nominatim add-data --help`.
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!!! important
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If you have configured a flatnode file for the import, then you
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need to keep this flatnode file around for updates.
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#### Installing the newest version of Pyosmium
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It is recommended to install Pyosmium via pip. Make sure to use python3.
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Run (as the same user who will later run the updates):
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```sh
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pip3 install --user osmium
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```
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#### Setting up the update process
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Next the update needs to be initialised. By default Nominatim is configured
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to update using the global minutely diffs.
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If you want a different update source you will need to add some settings
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to `.env`. For example, to use the daily country extracts
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diffs for Ireland from Geofabrik add the following:
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# base URL of the replication service
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NOMINATIM_REPLICATION_URL="https://download.geofabrik.de/europe/ireland-and-northern-ireland-updates"
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# How often upstream publishes diffs
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NOMINATIM_REPLICATION_UPDATE_INTERVAL=86400
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# How long to sleep if no update found yet
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NOMINATIM_REPLICATION_RECHECK_INTERVAL=900
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To set up the update process now run the following command:
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./nominatim replication --init
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It outputs the date where updates will start. Recheck that this date is
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what you expect.
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The `replication --init` command needs to be rerun whenever the replication
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service is changed.
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#### Updating Nominatim
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The following command will keep your database constantly up to date:
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./nominatim replication
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If you have imported multiple country extracts and want to keep them
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up-to-date, [Advanced installations section](Advanced-Installations.md) contains instructions
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to set up and update multiple country extracts.
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