AWS Setup¶
Amazon Web Services (AWS) provides the preferred hosting for the SEED Platform.
seed is a Django Project and Django’s documentation is an excellent place for general understanding of this project’s layout.
Prerequisites¶
Ubuntu server 14.04 or newer.
sudo apt-get update
sudo apt-get upgrade
sudo apt-get install -y libpq-dev python-dev python-pip libatlas-base-dev \
gfortran build-essential g++ npm libxml2-dev libxslt1-dev git mercurial \
libssl-dev curl uwsgi-core uwsgi-plugin-python
PostgreSQL and Redis are not included in the above commands. For a quick installation on AWS it is okay to install PostgreSQL and Redis locally on the AWS instance. If a more permanent and scalable solution, it is recommended to use AWS’s hosted Redis (ElastiCache) and PostgreSQL service.
Note
postgresql >=9.4
is required to support `JSON Type`_
# To install PostgreSQL and Redis locally
sudo apt-get install redis-server
sudo apt-get install postgresql postgresql-contrib
Amazon Web Services (AWS) Dependencies¶
The following AWS services are used for SEED:
- RDS (PostgreSQL >=9.4)
- ElastiCache (redis)
- SES
Python Dependencies¶
Clone the SEED repository from github
$ git clone git@github.com:SEED-platform/seed.git
enter the repo and install the python dependencies from requirements
$ cd seed
$ sudo pip install -r requirements/local.txt
JavaScript Dependencies¶
npm
is required to install the JS dependencies. The bin/install_javascript_dependencies.sh
script will
download all JavaScript dependencies and build them. bower
and gulp
should be installed globally for
convenience.
$ sudo apt-get install build-essential
$ sudo apt-get install curl
$ sudo npm install -g bower gulp
$ bin/install_javascript_dependencies.sh
Database Configuration¶
Copy the local_untracked.py.dist
file in the config/settings
directory to
config/settings/local_untracked.py
, and add a DATABASES
configuration with your database username,
password, host, and port. Your database configuration can point to an AWS RDS instance or a PostgreSQL 9.4 database
instance you have manually installed within your infrastructure.
# Database
DATABASES = {
'default': {
'ENGINE':'django.db.backends.postgresql_psycopg2',
'NAME': 'seed',
'USER': '',
'PASSWORD': '',
'HOST': '',
'PORT': '',
}
}
In the above database configuration, seed
is the database name, this
is arbitrary and any valid name can be used as long as the database exists.
create the database within the postgres psql
shell:
CREATE DATABASE seed;
or from the command line:
createdb seed
create the database tables and migrations:
python manage.py syncdb
python manage.py migrate
create a superuser to access the system
$ python manage.py create_default_user --username=demo@example.com --organization=example --password=demo123
Note
Every user must be tied to an organization, visit /app/#/profile/admin
as the superuser to create parent organizations and add users to them.
Cache and Message Broker¶
The SEED project relies on redis for both cache and message brokering, and
is available as an AWS ElastiCache service.
local_untracked.py
should be updated with the CACHES
and CELERY_BROKER_URL
settings.
CACHES = {
'default': {
'BACKEND': 'redis_cache.cache.RedisCache',
'LOCATION': "seed-core-cache.ntmprk.0001.usw2.cache.amazonaws.com:6379",
'OPTIONS': { 'DB': 1 },
'TIMEOUT': 300
}
}
CELERY_BROKER_URL = 'redis://seed-core-cache.ntmprk.0001.usw2.cache.amazonaws.com:6379/1'
Running Celery the Background Task Worker¶
Celery is used for background tasks (saving data, matching, creating
projects, etc) and must be connected to the message broker queue. From the
project directory, celery
can be started:
celery -A seed worker -l INFO -c 2 -B --events --maxtasksperchild 1000
Running the Development Web Server¶
The Django dev server (not for production use) can be a quick and easy way to get an instance up and running. The dev server runs by default on port 8000 and can be run on any port. See Django’s runserver documentation for more options.
$ ./manage.py runserver
Running a Production Web Server¶
Our recommended web server is uwsgi sitting behind nginx. The
bin/start_uwsgi.sh
script can been created to start uwsgi
assuming
your Ubuntu user is named ubuntu
.
Also, static assets will need to be moved to S3 for production use. The
bin/post_compile
script contains a list of commands to move assets to S3.
$ bin/post_compile
$ bin/start_uwsgi
The following environment variables can be set within the ~/.bashrc
file to
override default Django settings.
export SENTRY_DSN=https://xyz@app.getsentry.com/123
export DEBUG=False
export ONLY_HTTPS=True