Django 1.8 + GIS (postgis) + PostgreSQL 9.4 + Digital Ocean + Gunicorn + Nginx + Ubuntu 14.04 & Virtualenv. Complete Deployment Guide step by step.

Step 0 : Create droplet with django application image.

Step 1 :

Connect to Digital Ocean server :

ssh root@<ip_address>
  

Step 2 :

As Ubuntu 14.04 comes with postgresql 9.3, remove it completely and install 9.4

Steps are as follows :

sudo apt-get --purge remove postgresql\*
sudo aptitude update
sudo aptitude dist-upgrade
echo "deb http://apt.postgresql.org/pub/repos/apt/ trusty-pgdg main" | sudo tee /etc/apt/sources.list.d/pgdg.list
wget --quiet -O - https://www.postgresql.org/media/keys/ACCC4CF8.asc | sudo apt-key add -
sudo aptitude update
## install 9.4
sudo aptitude install --with-recommends postgresql-9.4 postgresql-contrib-9.4 postgresql-server-dev-9.4

  

Step 3 :

Install pip, git , supervisor, postgresql 9.4 etc .

Steps are as follows :

sudo apt-get install python-pip python-dev libpq-dev postgresql-contrib git supervisor
sudo apt-get install python-imaging libjpeg8 libjpeg62-dev libfreetype6 libfreetype6-dev
sudo apt-get install postgresql-9.4-postgis python-psycopg2 postgresql-9.4 postgresql-server-dev-9.4

  

Step 4 :

set up virual env and git repository .

Steps are as follows :

cd /home/django/
sudo pip install virtualenv
virtualenv <prj_name>env
source <prj_name>env/bin/activate
git clone <git repo url> <prj_name>
cd <prj_name>
pip install -r requirements.txt  ## make sure pip install gevent
ln -s /usr/include/freetype2 /usr/include/freetype # if you are using pillow or pip
  

Step 5 :

GEOS, GIS, PROJ, GDAL installation. If you are not intend to use any of this libs, skip this step.

Steps are as follows :

sudo apt-get install binutils libproj-dev gdal-bin
sudo apt-get install python-gdal
  

#make temp directory ourside project directory and download below contents and install. It may take more time .
## GEOS
wget http://download.osgeo.org/geos/geos-3.3.8.tar.bz2
tar xjf geos-3.3.8.tar.bz2
cd geos-3.3.8
./configure
make
sudo make install
sudo ldconfig
cd ..

## PROJ.4
wget http://download.osgeo.org/proj/proj-4.8.0.tar.gz
wget http://download.osgeo.org/proj/proj-datumgrid-1.5.tar.gz
tar xzf proj-4.8.0.tar.gz
cd proj-4.8.0/nad
tar xzf ../../proj-datumgrid-1.5.tar.gz
cd ..
./configure
make
sudo make install
sudo ldconfig
cd ..

## GDAL
wget http://download.osgeo.org/gdal/gdal-1.9.2.tar.gz
tar xzf gdal-1.9.2.tar.gz
cd gdal-1.9.2
./configure
make
sudo make install
sudo ldconfig
cd ..

## PostGIS 
sudo apt-get install libxml2-dev
wget http://download.osgeo.org/postgis/source/postgis-2.1.5.tar.gz
tar xzf postgis-2.1.5.tar.gz
cd postgis-2.1.5
./configure
make
sudo make install
sudo ldconfig
cd ..
###

  

Step 6 :

Allow remote postgres connection if you are going to use pgadmin like tools.

Steps are as follows :

vim /etc/postgresql/9.4/main/postgresql.conf

listen_addresses='localhost'

to

listen_addresses='*'

vim /etc/postgresql/9.4/main/pg_hba.conf

# TYPE DATABASE USER CIDR-ADDRESS  METHOD
host  all  all  0.0.0.0/0 md5

service postgresql restart
  

Step 7 :

Set up db and its postgresql password

Steps are as follows :

sudo su - postgres
psql
ALTER USER postgres with password <something_strong_password>;
CREATE DATABASE <db_name> WITH ENCODING='UTF8' ;
\connect <db_name>;
CREATE EXTENSION postgis;
CREATE EXTENSION postgis_topology;
CREATE EXTENSION postgis_tiger_geocoder;
\q
exit
  

Step 8 :

Migrate Django Models and final changes to settings.py file

Steps are as follows :

# change settings.py to prod db user password
# push all changes to live and pull @ live
python manage.py migrate auth
python manage.py migrate
python manage.py createsuperuser 
python manage.py collectstatic
  

Step 9 :

Nginx , gunicorn, & supervisor changes

Steps are as follows :

## if you have supervisor script for example cronjob then put its short link.
ln -s /home/django/<prj_dir_name>/jobs_supervisor.conf /etc/supervisor/conf.d/jobs_supervisor.conf

# do path changes in /etc/nginx/sites-enabled/django
# do path changes in /etc/init/gunicorn.conf

############## content of gunicorn.conf###############
description "Gunicorn daemon for Django project"

start on (local-filesystems and net-device-up IFACE=eth0)
stop on runlevel [!12345]

# If the process quits unexpectadly trigger a respawn
respawn

setuid django
setgid django
chdir /home/django

exec /home/django/<prj_name>env/bin/gunicorn \
    --name=<prj_name> \
    --pythonpath=<prj_name> \
    --bind=127.0.0.1:9000 \
    --config /etc/gunicorn.d/gunicorn.py \
    <prj_name>.wsgi:application
  

Step 10 :

Above steps has deployed your django project. Note down below quick steps for quick deployment when you make code change to your project.

Steps are as follows :

ssh root@<ip_address>
source /home/django/<prj_name>env/bin/activate
cd /home/django/<prj_name>
git pull origin master
python manage.py collectstatic
python manage.py migrate
cd ..
chown -R django:django <prj_name>
sudo service gunicorn restart
sudo service nginx restart
sudo supervisorctl update
/etc/init.d/supervisor force-reload