Deployment notes for Ubuntu Instance Nginx, uwsgi, postgres, django, virtualenv stack

Deploy Notes

Deployment notes for Ubuntu Instance
Nginx, uwsgi, postgres, django, virtualenv stack

* ssh root
root access (need pem)
ssh -i whatever.pem  ubuntu@ec2-*-*-*-*.compute-1.amazonaws.com

* secure box
- cut off all ports but 22 and 80 using AWS Management Console
- edit /etc/ssh/sshd_config ensure PasswordAuthentication no

* add users
- create: on instance sudo useradd username -m -s /bin/bash
- password: sudo passwd username 
- sudo group: sudo adduser <username> sudo
- create ssh keys: ssh-keygen -t rsa

* ssh devs
(http://aws.amazon.com/articles/1233)
- copy over local users public key
- add to ~/.ssh/authorized_keys
- chmod 700 on ~/.ssh, chmod 600 on authorized_keys
- ssh whatever@ec2-*-*-*-*.compute-1.amazonaws.com
- add to ~/.ssh/config
    Host whatever
    User whatever
    HostName ec2-*-*-*-*.compute-1.amazonaws.com
- now: ssh whatever

* set up environment for hosting
- screen: modify ~/.screenrc
caption always "%{Wb} %H %{Bk}| %{Ck}%-w%50>%{Cb} %n %t %{-}%+w%<%{- Wk}%{Bk} | %=%{Wb} %C "
- install setuptools, pip, and virtualenv:
(http://www.pip-installer.org/en/latest/installing.html)
curl http://python-distribute.org/distribute_setup.py | sudo python
curl https://raw.github.com/pypa/pip/master/contrib/get-pip.py | sudo python
sudo pip install virtualenv

- setup virtualenv for app
1. cd ~/
2. virtualenv whatever.com --no-site-packages
3. activate by: `source bin/activate`

- install & configure uwsgi and nginx
(http://wiki.nginx.org/Install#Ubuntu_PPA)
1. sudo -s
2. sudo apt-get update
3. sudo apt-get install python-software-properties
4. nginx=stable # use nginx=development for latest development version
5. add-apt-repository ppa:nginx/$nginx
6. apt-get update 
7. apt-get install nginx

- Git / pull down application code
1. cd ~/whatever.com
2. sudo apt-get install git
3. git config --global color.ui true
4. add public key of application user to github repo if need be
5. git clone [email protected]:whatever/whatevers.git

- postgres
(https://help.ubuntu.com/community/PostgreSQL)
(https://help.ubuntu.com/12.04/serverguide/postgresql.html)
1. sudo apt-get install postgresql
2. sudo -u postgres createuser whatever
3. sudo -u postgres psql
4. create database whatever;
5. alter user whatever password 'whatever'; # may need to edit /etc/postgres/../pg_hba.conf and make peer to md5 for password
6. test connection; `psql`

- psycopg2
1. pip install psycopg2
2. may need to 
    sudo apt-get install libpq-dev python-dev

- PIL
1. pip install PIL
w/ jpeg support
(http://dimamoroz.com/blog/3-ubuntu-pil-jpeg-support/)
1. sudo apt-get install libjpeg62-dev
2. cd /usr/lib
3. sudo ln -s x86_64-linux-gnu/libjpeg.so
4. sudo ln -s x86_64-linux-gnu/libz.so


- installing python packages
1. pip install whatever

- Spinning Up App
1. python manage.py syncdb
2. python manage.py migrate
3. test using python manage.py runserver 0.0.0.0:8000 (ensure port is opened)
4. dump local data, pg_dump dbname > output.sql
5. restore data psql dbname < output.sql

- uwsgi
1. pip install uwsgi

- Wiring up uwsgi and nginx
1. create ~/whatevers.com/conf/nginx.conf
2. create ~/whatevers.com/logs, point these in nginx.conf
(http://projects.unbit.it/uwsgi/)
3. create ~/whatever.com/media
4. ln -s /path/to/admin_tools/media/ admin_tools
5. start uwsgi `uwsgi -s 127.0.0.1:8000 -H /home/whatever/whatever.com/ -w whatever.wsgi -M`