Linux server configuration

Final project of Udacity Full Stack Web Developer Nanodegree

The goal of the project is to deploy Item Catalog Application as Amazon Lightsail.

The server is available by this url: http://13.59.27.59/

Steps

1. Create an account on AWS and launch an instance with Ubuntu operational system

2. Change ssh port from 22 to 2200

   1. Connect to the server

      chmod 400 LightsailDefaultPrivateKey-us-east-2.pem
      ssh ubuntu@13.59.27.59 -i LightsailDefaultPrivateKey-us-east-2.pem
      

   2. Edit file /etc/ssh/sshd_config

      Port 2200
      PermitRootLogin no
      PasswordAuthentication yes
      

   3. Restart ssh server:

      service sshd restart
      

   4. Change ports in firewall

3. Create a user grader

   1. Create a new account with root permissions

      sudo su -
      adduser grader
      usermod -aG sudo grader
      
      mkdir /home/grader/.ssh
      chown grader:grader /home/grader/.ssh
      chmod 700 /home/grader/.ssh
      cp /root/.ssh/authorized_keys /home/grader/.ssh/
      chown grader:grader /home/grader/.ssh/authorized_keys
      chmod 644 /home/grader/.ssh/authorized_keys
      

   2. Create ssh keys and copy to the user folder

      ssh-keygen -f ssh_keys/grader
      cat ssh_keys/grader.pub | ssh grader@13.59.27.59 -p 2200 "cat >>  ~/.ssh/authorized_keys"
      

   3. Disable login with password in file /etc/ssh/sshd_config

      PasswordAuthentication no
      

4. Configure Linux

   1. Install latest software

      ssh grader@13.59.27.59 -p 2200 -i ssh_keys/grader
      sudo apt-get -qy upgrade
      sudo apt-get -qy update
      

   2. Set timezone to UTC and locale

      sudo timedatectl set-timezone UTC
      
      echo 'LC_ALL="en_US.UTF-8"' >> /etc/environment
      source /etc/environment
      export LC_ALL
      

   3. Install apache2, postgres and python

      sudo apt-get install apache2
      sudo apt-get install libapache2-mod-wsgi-py3
      sudo apt-get install python3-pip
      
      sudo pip3 install --upgrade pip
      sudo pip3 install flask
      sudo pip3 install sqlachemy
      sudo pip3 install oauth2client
      sudo pip3 install psycopg2
      
      sudo apt -qy install postgresql python3-psycopg2 libpq-dev
      

   4. Setup a database

      sudo -u postgres createuser -P catalog
      sudo -u postgres createdb -O catalog catalog
      

5. Deploy project

   1. Clone project to /var/www/

      cd /var/www/
      git clone https://github.com/irsol/item-catalog-app.git
      

   2. Create server.wsgi file

      import sys
      import logging
      
      logging.basicConfig(stream=sys.stderr)
      sys.path.insert(0, "/var/www/item-catalog-app/")
      
      from server import app as application
      

   3. Update /etc/apache2/sites-enabled/000-default.conf

      <VirtualHost *:80>
      	WSGIScriptAlias / /var/www/item-catalog-app/server.wsgi
      
      	<directory /var/www/item-catalog-app/>
      		WSGIApplicationGroup %{GLOBAL}
      		Require all granted
      	</directory>
      
      	ErrorLog ${APACHE_LOG_DIR}/error.log
      	CustomLog ${APACHE_LOG_DIR}/access.log combined
      </VirtualHost>	
      

   4. Change database connection from sqlite to postgres in database_setup.py

      engine = create_engine('postgresql://catalog:<password>@localhost:5432/catalog')
      

   5. Copy client_secrets.json to /var/www/item-catalog-app

   6. Restart apache:

      sudo apache2ctl restart