devanshsanghvi/udacity-linux-server-configuration

udacity-linux-server-configuration

Project Description

Take a baseline installation of a Linux distribution on a virtual machine and prepare it to host your web applications, to include installing updates, securing it from a number of attack vectors and installing/configuring web and database servers.

• IP address: 54.82.201.241

• Accessible SSH port: 2200

-Accessible using : ssh grader@54.82.201.241 -p 2200

Steps

1. Create new user named grader and give it the permission to sudo

• Run $ sudo adduser grader to create a new user named grader
• Create a new file in the sudoers directory with sudo nano /etc/sudoers.d/grader
• Add the following text grader ALL=(ALL:ALL) ALL

2. Update all currently installed packages

• Download package lists with sudo apt-get update
• Fetch new versions of packages with sudo apt-get upgrade

3. Change SSH port from 22 to 2200 "I tried but could not do it"

• Run sudo nano /etc/ssh/sshd_config
• Change the port from 22 to 2200
• Confirm by running ssh -i ~/.ssh/udacity_key.rsa -p 2200 root@35.167.27.204

4. Configure the Uncomplicated Firewall (UFW) to only allow incoming connections for SSH (port 2200), HTTP (port 80), and NTP (port 123)

• sudo ufw allow 2200/tcp
• sudo ufw allow 80/tcp
• sudo ufw allow 123/udp
• sudo ufw enable

5. Configure the local timezone to UTC

• Run sudo dpkg-reconfigure tzdata and then choose UTC

6. Configure key-based authentication for grader user

• Run this command cp /root/.ssh/authorized_keys /home/grader/.ssh/authorized_keys

8. Install Apache

• sudo apt-get install apache2

9. Install mod_wsgi

• Run sudo apt-get install libapache2-mod-wsgi python-dev
• Enable mod_wsgi with sudo a2enmod wsgi
• Start the web server with sudo service apache2 start

10. Clone the Catalog app from Github

• Install git using: sudo apt-get install git
• cd /var/www
• sudo mkdir catalog
• Change owner of the newly created catalog folder sudo chown -R grader:grader catalog
• cd /catalog
• Clone your project from github `git clone https://github.com/iliketomatoes/catalog.git catalog'
• Create a catalog.wsgi file, then add this inside:

import sys
import logging
logging.basicConfig(stream=sys.stderr)
sys.path.insert(0, "/var/www/catalog/")

from catalog import app as application
application.secret_key = 'supersecretkey'

• Rename application.py to init.py mv application.py __init__.py

11. Install virtual environment

• Install the virtual environment sudo pip install virtualenv
• Create a new virtual environment with sudo virtualenv venv
• Activate the virutal environment source venv/bin/activate
• Change permissions sudo chmod -R 777 venv

12. Install Flask and other dependencies

• Install pip with sudo apt-get install python-pip
• Install Flask pip install Flask
• Install other project dependencies sudo pip install httplib2 oauth2client sqlalchemy psycopg2 sqlalchemy_utils

13. Update path of client_secrets.json file

• nano __init__.py
• Change client_secrets.json path to /var/www/catalog/catalog/client_secrets.json

14. Configure and enable a new virtual host

• Run this: sudo nano /etc/apache2/sites-available/catalog.conf
• Paste this code:

<VirtualHost *:80>
ServerName 54.82.201.241

ServerAdmin admin@54.82.201.241
WSGIDaemonProcess catalog python-path=/var/www/catalog:/var/www/catalog/venv/lib/python2.7/site-packages
WSGIProcessGroup catalog
WSGIScriptAlias / /var/www/catalog/catalog.wsgi
<Directory /var/www/catalog/catalog/>
Order allow,deny
Allow from all
</Directory>
Alias /static /var/www/catalog/catalog/static
<Directory /var/www/catalog/catalog/static/>
Order allow,deny
Allow from all
</Directory>
ErrorLog ${APACHE_LOG_DIR}/error.log
LogLevel warn
CustomLog ${APACHE_LOG_DIR}/access.log combined
</VirtualHost>

• Enable the virtual host sudo a2ensite catalog

15. Install and configure PostgreSQL

• sudo apt-get install libpq-dev python-dev
• sudo apt-get install postgresql postgresql-contrib
• sudo su - postgres
• psql
• CREATE USER catalog WITH PASSWORD 'password';
• ALTER USER catalog CREATEDB;
• CREATE DATABASE catalog WITH OWNER catalog;
• \c catalog
• REVOKE ALL ON SCHEMA public FROM public;
• GRANT ALL ON SCHEMA public TO catalog;
• \q
• exit

16. Restart Apache

• sudo service apache2 restart

17. Special thanks to stueken who wrote a really helpful README in his repository.

18. Visit site at http://54.82.201.241