This container allows you to easily set up an OpenStreetMap PNG tile server given a .osm.pbf file. It is based on the latest Ubuntu 18.04 LTS guide from switch2osm.org and therefore uses the default OpenStreetMap style.
First create a Docker volume to hold the PostgreSQL database that will contain the OpenStreetMap data:
docker volume create openstreetmap-data
Next, download an .osm.pbf extract from geofabrik.de for the region that you're interested in. You can then start importing it into PostgreSQL by running a container and mounting the file as /data.osm.pbf. For example:
docker run \
-v /absolute/path/to/luxembourg.osm.pbf:/data.osm.pbf \
-v openstreetmap-data:/var/lib/postgresql/12/main \
overv/openstreetmap-tile-server \
import
If the container exits without errors, then your data has been successfully imported and you are now ready to run the tile server.
If your import is an extract of the planet and has polygonal bounds associated with it, like those from geofabrik.de, then it is possible to set your server up for automatic updates. Make sure to reference both the OSM file and the polygon file during the import process to facilitate this, and also include the UPDATES=enabled variable:
docker run \
-e UPDATES=enabled \
-v /absolute/path/to/luxembourg.osm.pbf:/data.osm.pbf \
-v /absolute/path/to/luxembourg.poly:/data.poly \
-v openstreetmap-data:/var/lib/postgresql/12/main \
overv/openstreetmap-tile-server \
import
Refer to the section Automatic updating and tile expiry to actually enable the updates while running the tile server.
It is also possible to let the container download files for you rather than mounting them in advance by using the DOWNLOAD_PBF and DOWNLOAD_POLY parameters:
docker run \
-e DOWNLOAD_PBF=https://download.geofabrik.de/europe/luxembourg-latest.osm.pbf \
-e DOWNLOAD_POLY=https://download.geofabrik.de/europe/luxembourg.poly \
-v openstreetmap-data:/var/lib/postgresql/12/main \
overv/openstreetmap-tile-server \
import
Run the server like this:
docker run \
-p 8080:80 \
-v openstreetmap-data:/var/lib/postgresql/12/main \
-d overv/openstreetmap-tile-server \
run
Your tiles will now be available at http://localhost:8080/tile/{z}/{x}/{y}.png. The demo map in leaflet-demo.html will then be available on http://localhost:8080. Note that it will initially take quite a bit of time to render the larger tiles for the first time.
The docker-compose.yml file included with this repository shows how the aforementioned command can be used with Docker Compose to run your server.
Tiles that have already been rendered will be stored in /var/lib/mod_tile. To make sure that this data survives container restarts, you should create another volume for it:
docker volume create openstreetmap-rendered-tiles
docker run \
-p 8080:80 \
-v openstreetmap-data:/var/lib/postgresql/12/main \
-v openstreetmap-rendered-tiles:/var/lib/mod_tile \
-d overv/openstreetmap-tile-server \
run
If you do this, then make sure to also run the import with the openstreetmap-rendered-tiles volume to make sure that caching works properly across updates!
Given that you've set up your import as described in the Automatic updates section during server setup, you can enable the updating process by setting the UPDATES variable while running your server as well:
docker run \
-p 8080:80 \
-e UPDATES=enabled \
-v openstreetmap-data:/var/lib/postgresql/12/main \
-v openstreetmap-rendered-tiles:/var/lib/mod_tile \
-d overv/openstreetmap-tile-server \
run
This will enable a background process that automatically downloads changes from the OpenStreetMap server, filters them for the relevant region polygon you specified, updates the database and finally marks the affected tiles for rerendering.
To enable the Access-Control-Allow-Origin header to be able to retrieve tiles from other domains, simply set the ALLOW_CORS variable to enabled:
docker run \
-p 8080:80 \
-v openstreetmap-data:/var/lib/postgresql/12/main \
-e ALLOW_CORS=enabled \
-d overv/openstreetmap-tile-server \
run
To connect to the PostgreSQL database inside the container, make sure to expose port 5432:
docker run \
-p 8080:80 \
-p 5432:5432 \
-v openstreetmap-data:/var/lib/postgresql/12/main \
-d overv/openstreetmap-tile-server \
run
Use the user renderer and the database gis to connect.
psql -h localhost -U renderer gis
The default password is renderer, but it can be changed using the PGPASSWORD environment variable:
docker run \
-p 8080:80 \
-p 5432:5432 \
-e PGPASSWORD=secret \
-v openstreetmap-data:/var/lib/postgresql/12/main \
-d overv/openstreetmap-tile-server \
run
Details for update procedure and invoked scripts can be found here link.
The import and tile serving processes use 4 threads by default, but this number can be changed by setting the THREADS environment variable. For example:
docker run \
-p 8080:80 \
-e THREADS=24 \
-v openstreetmap-data:/var/lib/postgresql/12/main \
-d overv/openstreetmap-tile-server \
run
The import and tile serving processes use 800 MB RAM cache by default, but this number can be changed by option -C. For example:
docker run \
-p 8080:80 \
-e "OSM2PGSQL_EXTRA_ARGS=-C 4096" \
-v openstreetmap-data:/var/lib/postgresql/12/main \
-d overv/openstreetmap-tile-server \
run
The database use the autovacuum feature by default. This behavior can be changed with AUTOVACUUM environment variable. For example:
docker run \
-p 8080:80 \
-e AUTOVACUUM=off \
-v openstreetmap-data:/var/lib/postgresql/12/main \
-d overv/openstreetmap-tile-server \
run
If you are planning to import the entire planet or you are running into memory errors then you may want to enable the --flat-nodes option for osm2pgsql. You can then use it during the import process as follows:
docker run \
-v /absolute/path/to/luxembourg.osm.pbf:/data.osm.pbf \
-v openstreetmap-nodes:/nodes \
-v openstreetmap-data:/var/lib/postgresql/12/main \
-e "OSM2PGSQL_EXTRA_ARGS=--flat-nodes /nodes/flat_nodes.bin" \
overv/openstreetmap-tile-server \
import
Note that if you use a folder other than
/nodesthen you must make sure that you manually set the owner torenderer!
You can find an example of the import performance to expect with this image on the OpenStreetMap wiki.
If you encounter such entries in the log, it will mean that the default shared memory limit (64 MB) is too low for the container and it should be raised:
renderd[121]: ERROR: failed to render TILE ajt 2 0-3 0-3
renderd[121]: reason: Postgis Plugin: ERROR: could not resize shared memory segment "/PostgreSQL.790133961" to 12615680 bytes: ### No space left on device
To raise it use --shm-size parameter. For example:
docker run \
-p 8080:80 \
-v openstreetmap-data:/var/lib/postgresql/12/main \
--shm-size="192m" \
-d overv/openstreetmap-tile-server \
run
For too high values you may notice excessive CPU load and memory usage. It might be that you will have to experimentally find the best values for yourself.
You may be running into problems with memory usage during the import. Have a look at the "Flat nodes" section in this README.
Copyright 2019 Alexander Overvoorde
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
https://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
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