# Deploy Flask app to AWS EC2

## 1. Connect to EC2
Launch an instance on AWS. You'll get a `.pem` file. Download and save it to a private path.

Change permission first: `chmod 400 /path/to/your/pemfile.pem`

Connect to instance via ssh:

ssh -i /path/to/your/pemfile.pem ubuntu@my-instance-public-ip-address

## 2. Install something you'll need

sudo apt-get update
sudo apt install pipenv
sudo apt install python3 python3-pip
sudo apt-get install apache2
sudo apt-get install libapache2-mod-wsgi-py3

install python 3.7

sudo add-apt-repository ppa:deadsnakes/ppa
sudo apt install python3.7

## 3. Configure Apache Settings
### 3.1 Apache settings

cd /etc/apache2/sites-enabled
sudo vim 000-default.conf

add the conten below:

WSGIDaemonProcess flaskapp threads=5
WSGIScriptAlias / /var/www/html/{your_app_name}/flaskapp.wsgi

<Directory flaskapp>
  WSGIProcessGroup flaskapp
  WSGIApplicationGroup %{GLOBAL}
  Order deny,allow
  Allow from all
</Directory>

### 3.2 wsgi settings

vim flaskapp.wsgi

add the conten below:

import sys 
sys.path.insert(0, '/var/www/html/{your_app_name}')
from {main.py} import app as application

make a symbolic link

sudo ln -sT ~/{your_app_name} /var/www/html/{your_app_name}

## 4. Useful Commands
### Upload to EC2

scp -i /path/to/your/pemfile.pem /local/path/to/your.csv ubuntu@my-instance-public-ip-address:path/to/your.csv

### Restart Apache Server

sudo service apache2 restart

### Trace Apache Log

tail -f /var/log/apache2/error.log