Project Linux Server Configuration (Udacity)

Linux Server Configuration project of Udacity FullStack Nanodegree

The IP address of the project is : 35.227.44.250
Accessible Port is 2200
The Project can be accessed by visiting the URL : http://35.227.44.250.xip.io/

Project Overview

You will take a baseline installation of a Linux server and prepare it to host your web applications. You will secure your server from a number of attack vectors, install and configure a database server, and deploy one of your existing web applications onto it.

Why This Project?

A deep understanding of exactly what your web applications are doing, how they are hosted, and the interactions between multiple systems are what define you as a Full Stack Web Developer. In this project, you’ll be responsible for turning a brand-new, bare bones, Linux server into the secure and efficient web application host your applications need.

What Will I Learn?

You will learn how to access, secure, and perform the initial configuration of a bare-bones Linux server. You will then learn how to install and configure a web and database server and actually host a web application.

Get your server

Start a new Ubuntu Linux server instance on Google Cloud Platform.

Create an instance in Computer Engine of Google Cloud.
Choose an instance image: Ubuntu

SSH into your server.

After the server has been created, click on SSH button
Copy the SSH key and place it in ~/.ssh directory , name it id_rsa
Go to Metadata on google cloud platform, select SSH keys, Edit and add the id_rsa.pub, name it aysait101.
Type ssh -i ~/.ssh/id_rsa aysait101@35.227.44.250 to SSH from your terminal, enter passphrase to connect.

Secure your server

Update all currently installed packages.

sudo apt-get update
sudo apt-get upgrade

Change the SSH port from 22 to 2200.

Go to VM instance interface, View network details, navigate to Firewall rules and add custom port tcp:2200 to allow connection to the port.
While logged in from terminal, sudo nano /etc/ssh/sshd_config and change Port 22 to Port 2200 and change PasswordAuthentication no to enfirce SSH key login.
Restart with sudo service ssh restart
Login using ssh -i ~/.ssh/id_rsa -p 2200 grader@35.227.44.250 and enter passphrase to connect.

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

sudo apt-get install ufw to install ufw
sudo ufw allow 2200/tcp
sudo ufw allow 80/tcp
sudo ufw allow 123/udp
sudo ufw enable
check status using sudo ufw status

Give `grader` access.

In order for your project to be reviewed, the grader needs to be able to log in to your server.

Create a new user account named grader.

Logged in as root, sudo adduser grader
Enter the details to create user.

Give grader the permission to sudo.

sudo nano /etc/sudoers
touch /etc/sudoers.d/grader
sudo nano /etc/sudoers.d/grader, enter the following: grader ALL=(ALL:ALL) ALLand save.

Create an SSH key pair for grader using the ssh-keygen tool.

On your machine, generate SSH key pair using ssh-keygen in ~/.ssh. (I name it linuxTwo)
su - grader logs you in as grader using password.
mkdir .ssh
touch .ssh/authorized_keys
sudo nano .ssh/authorized_keys and paste the contents of linuxTwo.pub.
chmod 700 .ssh, chmod 644 .ssh/authorized_keys
service ssh restart to restart SSH and CTRL D to logout
Use ssh -i ~/.ssh/linuxTwo grader@35.227.44.250 -p 2200 to login using passphrase.

Prepare to deploy your project.

Configure the local timezone to UTC.

sudo dpkg-reconfigure tzdata and choose your region.

Install and configure Apache to serve a Python mod_wsgi application.

sudo apt-get install apache2
sudo apt-get install libapache2-mod-wsgi python-devsudo apt-get install libapache2-mod-wsgi pytdev
sudo apt-get build-dep python-psycopg2.

Install and configure PostgreSQL:

sudo apt-get install postgresql postgresql-contrib
Create a new database user named catalog that has limited permissions to your catalog application database.
sudo su - postgres
CREATE USER catalog WITH PASSWORD 'PASSWORD';
ALTER USER catalog CREATEDB;
CREATE DATABASE catalog WITH OWNER catalog;
GRANT ALL ON SCHEMA public TO catalog;
\q

Install git.

sudo apt-get install git

Deploy the Item Catalog project.

Clone and setup your Item Catalog project from the Github repository you created earlier in this Nanodegree program.

cd /var/www
sudo mkdir catalog
cd /catalog
touch catalog.wsgi to create .wsgi file
sudo nano catalog.wsgi and add the folowing:

#!/usr/bin/python
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 = 'super_secret_key'

clone project from git clone https://github.com/ayseth/item-catalog.git
Renname folder mv item-catalog catalog
cd /catalog
Rename application.py using mv application.py __init__.py
sudo nano __init__.py, go to the end of the file and change

#app.debug = True
#app.run(host='0.0.0.0', port=5000)
app.run()

and change engine = create_engine('sqlite:///catalog.db?check_same_thread=False') to engine = create_engine('postgresql://catalog:PASSWORD@localhost/catalog')
sudo nano database_setup.py and change engine = create_engine('sqlite:///catalog.db?check_same_thread=False') to engine = create_engine('postgresql://catalog:PASSWORD@localhost/catalog')
sudo python database_setup.py
sudo apt-get install virtualenv
sudo virtualenv venv
source venv/bin/activate to activate virtual environment
sudo chmod -R 777 venv
sudo apt-get install python-pip
Install the following,
- pip install sqlalchemy
- pip install httplib2
- pip install requests
- pip install flask
- pip install oauth2client
- pip install Flask-SQLAlchemy
- pip install psycopg2
- pip install psycopg2-binary
deactive to deactivate virtual env
sudo nano /etc/apache2/sites-available/catalog.conf and add the following

<VirtualHost *:80>
    ServerName 35.227.44.250.xip.io
    ServerAdmin aysait101@35.227.44.250
    WSGIDaemonProcess catalog python-path=/var/www/catalog:/var/www/catalog/ven$
    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>

sudo a2ensite catalog
service apache2 reload
sudo service apache2 restart

To check for errors use sudo tail /var/log/apache2/error.log

Other important changes:

For google login to work, add go to google cloud credentials and add http://35.227.44.250.xip.io to Authorized JavaScript origins
Add http://35.227.44.250.xip.io/gconnect, http://35.227.44.250.xip.io/gdisconnect, http://35.227.44.250.xip.io/login to Authorized redirect URIs
Download the client_secerts.json
On your terminal replace the contnets of the old client_secrets.json file with the new client_secrets.json using sudo nano /var/www/catalog/catalog/client_secrets.json and save.
Change the path of client_secrets.json in __init__.py

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Project Linux Server Configuration (Udacity)

Project Overview

Why This Project?

What Will I Learn?

Get your server

Secure your server

Give `grader` access.

Prepare to deploy your project.

Deploy the Item Catalog project.

Other important changes:

References:

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ayseth/linux-configuration

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Repository files navigation

Project Linux Server Configuration (Udacity)

Project Overview

Why This Project?

What Will I Learn?

Get your server

Secure your server

Give grader access.

Prepare to deploy your project.

Deploy the Item Catalog project.

Other important changes:

References:

About

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Give `grader` access.

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