Fix Postgres not being reachable from outside container

Dockerfile

@@ -143,6 +143,8 @@ COPY postgresql.custom.conf.tmpl /etc/postgresql/10/main/
 RUN chown -R postgres:postgres /var/lib/postgresql \
   && chown postgres:postgres /etc/postgresql/10/main/postgresql.custom.conf.tmpl \
   && echo "\ninclude 'postgresql.custom.conf'" >> /etc/postgresql/10/main/postgresql.conf
+RUN echo "host all all 0.0.0.0/0 md5" >> /etc/postgresql/10/main/pg_hba.conf \
+      && echo "host all all ::/0 md5" >> /etc/postgresql/10/main/pg_hba.conf
 
 # copy update scripts
 COPY openstreetmap-tiles-update-expire /usr/bin/

README.md

@@ -92,6 +92,37 @@ docker run \
     run
 ```
 
+### Connecting to Postgres
+
+To connect to the PostgreSQL database inside the container, make sure to expose port 5432:
+
+```
+docker run \
+    -p 80:80 \
+    -p 5432:5432 \
+    -v openstreetmap-data:/var/lib/postgresql/10/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 80:80 \
+    -p 5432:5432 \
+    -e PGPASSWORD=secret \
+    -v openstreetmap-data:/var/lib/postgresql/10/main \
+    -d overv/openstreetmap-tile-server \
+    run
+```
+
 ## Performance tuning and tweaking
 
 Details for update procedure and invoked scripts can be found here [link](https://ircama.github.io/osm-carto-tutorials/updating-data/).

postgresql.custom.conf.tmpl

@@ -21,3 +21,5 @@ random_page_cost = 1.1
 track_activity_query_size = 16384
 autovacuum_vacuum_scale_factor = 0.05
 autovacuum_analyze_scale_factor = 0.02
+
+listen_addresses = '*'

run.sh

@@ -2,13 +2,16 @@
 
 set -x
 
-function CreatePostgressqlConfig()
-{
+function createPostgresConfig() {
   cp /etc/postgresql/10/main/postgresql.custom.conf.tmpl /etc/postgresql/10/main/postgresql.custom.conf
   sudo -u postgres echo "autovacuum = $AUTOVACUUM" >> /etc/postgresql/10/main/postgresql.custom.conf
   cat /etc/postgresql/10/main/postgresql.custom.conf
 }
 
+function setPostgresPassword() {
+    sudo -u postgres psql -c "ALTER USER renderer PASSWORD '${PGPASSWORD:-renderer}'"
+}
+
 if [ "$#" -ne 1 ]; then
     echo "usage: <import|run>"
     echo "commands:"
@@ -22,14 +25,15 @@ fi
 
 if [ "$1" = "import" ]; then
     # Initialize PostgreSQL
-    CreatePostgressqlConfig
+    createPostgresConfig
     service postgresql start
     sudo -u postgres createuser renderer
     sudo -u postgres createdb -E UTF8 -O renderer gis
     sudo -u postgres psql -d gis -c "CREATE EXTENSION postgis;"
     sudo -u postgres psql -d gis -c "CREATE EXTENSION hstore;"
     sudo -u postgres psql -d gis -c "ALTER TABLE geometry_columns OWNER TO renderer;"
     sudo -u postgres psql -d gis -c "ALTER TABLE spatial_ref_sys OWNER TO renderer;"
+    setPostgresPassword
 
     # Download Luxembourg as sample if no data is provided
     if [ ! -f /data.osm.pbf ]; then
@@ -75,9 +79,10 @@ if [ "$1" = "run" ]; then
     fi
 
     # Initialize PostgreSQL and Apache
-    CreatePostgressqlConfig
+    createPostgresConfig
     service postgresql start
     service apache2 restart
+    setPostgresPassword
 
     # Configure renderd threads
     sed -i -E "s/num_threads=[0-9]+/num_threads=${THREADS:-4}/g" /usr/local/etc/renderd.conf