Set up Tilemill on Ubuntu 12.04 and the OSM bright stylesheet and postgres/postgis and imposm and import OpenStreetMap data for the Isle of Wight (it's fairly small so it'll import quickly)

setup-mapbox.sh

#!/bin/bash

# Based on http://www.mapbox.com/tilemill/docs/guides/osm-bright-ubuntu-quickstart/

sudo add-apt-repository --yes ppa:developmentseed/mapbox
sudo apt-get update
sudo apt-get --yes install tilemill libmapnik nodejs postgresql postgresql-9.1-postgis build-essential python-dev protobuf-compiler libprotobuf-dev libtokyocabinet-dev python-psycopg2 libgeos-c1 python-pip git
sudo pip install imposm

mkdir osm
cd osm

# OPTIONAL Move postgres data directory onto EC2 ephemeral storage.
echo "--- /etc/postgresql/9.1/main/postgresql.conf	2013-07-25 11:59:03.000000000 +0000
+++ /etc/postgresql/9.1/main/postgresql.conf	2013-07-25 12:03:08.817403077 +0000
@@ -38,7 +38,8 @@
 # The default values of these variables are driven from the -D command-line
 # option or PGDATA environment variable, represented here as ConfigDir.
 
-data_directory = '/var/lib/postgresql/9.1/main'		# use data in another directory
+#data_directory = '/var/lib/postgresql/9.1/main'		# use data in another directory
+data_directory = '/mnt/postgres-data'
 					# (change requires restart)
 hba_file = '/etc/postgresql/9.1/main/pg_hba.conf'	# host-based authentication file
 					# (change requires restart)" > postgresql.conf.diff

# UNCOMMENT THESE LINES if you want your postgres data on ephemeral storage:
#sudo cp -rp /var/lib/postgresql/9.1/main /mnt/postgres-data
#sudo patch /etc/postgresql/9.1/main/postgresql.conf < postgresql.conf.diff

# Allow postgres anonymous local login:

echo "--- /etc/postgresql/9.1/main/pg_hba.conf  2013-07-05 18:10:55.219538710 +0100
+++ /etc/postgresql/9.1/main/pg_hba.conf	2013-07-05 18:15:13.558666437 +0100
@@ -82,16 +82,16 @@
 # maintenance (custom daily cronjobs, replication, and similar tasks).
 #
 # Database administrative login by Unix domain socket
-local   all             postgres                                peer
+local   all             postgres                                trust
 
 # TYPE  DATABASE        USER            ADDRESS                 METHOD
 
 # \"local\" is for Unix domain socket connections only
-local   all             all                                     peer
+local   all             all                                     trust
 # IPv4 local connections:
-host    all             all             127.0.0.1/32            md5
+host    all             all             127.0.0.1/32            trust
 # IPv6 local connections:
-host    all             all             ::1/128                 md5
+host    all             all             ::1/128                 trust
 # Allow replication connections from localhost, by a user with the
 # replication privilege.
 #local   replication     postgres                                peer" > pg_hba.diff

sudo patch /etc/postgresql/9.1/main/pg_hba.conf < pg_hba.diff

sudo /etc/init.d/postgresql restart

psql -U postgres -c "create database osm;"
psql -U postgres -d osm -f /usr/share/postgresql/9.1/contrib/postgis-1.5/postgis.sql
psql -U postgres -d osm -f /usr/share/postgresql/9.1/contrib/postgis-1.5/spatial_ref_sys.sql

# Download and configure osm-bright style:

git clone https://github.com/mapbox/osm-bright.git
cp osm-bright/configure.py.sample osm-bright/configure.py

echo "--- configure.py	2013-07-05 18:11:40.804348839 +0100
+++ configure.py	2013-07-05 18:25:43.313367483 +0100
@@ -4,7 +4,7 @@
 from collections import defaultdict
 config = defaultdict(defaultdict)
 
-config[\"importer\"] = \"osm2pgsql\" # either 'imposm' or 'osm2pgsql'
+config[\"importer\"] = \"imposm\" # either 'imposm' or 'osm2pgsql'
 
 # The name given to the style. This is the name it will have in the TileMill
 # project list, and a sanitized version will be used as the directory name
@@ -20,7 +20,7 @@
 config[\"postgis\"][\"host\"]     = \"\"
 config[\"postgis\"][\"port\"]     = \"\"
 config[\"postgis\"][\"dbname\"]   = \"osm\"
-config[\"postgis\"][\"user\"]     = \"\"
+config[\"postgis\"][\"user\"]     = \"postgres\"
 config[\"postgis\"][\"password\"] = \"\"
 
 # Increase performance if you are only rendering a particular area by" > configure.diff

patch osm-bright/configure.py < configure.diff

# Download and import some map data (I chose the isle of wight for as it's small/fast to load)
wget http://download.geofabrik.de/europe/great-britain/england/isle-of-wight-latest.osm.pbf
imposm --connection postgis://postgres:@localhost/osm -m ./osm-bright/imposm-mapping.py --read --write --optimize --deploy-production-tables isle-of-wight-latest.osm.pbf 

# One can run mapbox to create the user folder and import examples.
# Here we create it manually meaning you miss out on the example projects.
mkdir -p ~/Documents/MapBox/project
cd osm-bright
./make.py