Book Image

Raspberry Pi Networking Cookbook - Second Edition

By : Rick Golden
Book Image

Raspberry Pi Networking Cookbook - Second Edition

By: Rick Golden

Overview of this book

<p>With increasing interest in Maker Projects and the Internet of Things (IoT), students, scientists, and hobbyists are using the Raspberry Pi as a reliable, inexpensive platform to connect local devices to Internet services.</p> <p>This book begins with recipes that are essential to installing the Raspberry Pi and configuring it for network access. Then it continues with recipes on installing common networking services such as firewalls and file sharing.</p> <p>The final chapters include recipes for network monitoring, streaming data from the Raspberry Pi to IoT services, and using clusters of Raspberry Pis to store and analyze large volumes of data.</p>

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Raspberry Pi Networking Cookbook - Second Edition
Rick Golden
Jan, 2016 | 352 pages
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Table of Contents (14 chapters)
Raspberry Pi Networking Cookbook Second Edition
Raspberry Pi Networking Cookbook Second Edition
Credits
Credits
About the Author
About the Author
About the Reviewers
About the Reviewers
www.PacktPub.com
www.PacktPub.com
Preface
Preface
Free Chapter
1
Installation and Setup
Installation and Setup
Introduction
Preparing for the initial boot
Downloading new SD cards
Booting with NOOBS
Mac OS X disk utilities – diskutil and dd
Image Writer for Windows – Win32DiskImager.exe
Convert and copy for Linux – dd
Booting Raspbian Linux for the first time
Shutting down the Raspberry Pi
2
Administration
Administration
Introduction
Executing commands with privileges (sudo)
Expanding the size of a filesystem (raspi-config)
Configuring memory usage (raspi-config)
Configuring remote access (raspi-config)
Obtaining remote access by using SSH
Obtaining remote access by using PuTTY
Changing the login password (passwd)
Adding a user (useradd)
Giving a user sudo privileges (id and usermod)
3
Maintenance
Maintenance
Introduction
Updating the operating system (apt-get)
Upgrading Raspbian from wheezy to jessie using sources.list
Searching for software packages (apt-cache)
Installing a package (apt-get)
Package management (aptitude)
Reading the built-in documentation (man)
Reading the built-in documentation (info)
4
File Sharing
File Sharing
Introduction
Mounting USB disks (pmount)
Accessing another computer's files (smbclient)
Sharing folders from other computers (mount.cifs)
Auto-mounting USB disks at boot (/etc/fstab)
Auto-mounting a shared folder at boot
Creating a file server (Samba)
Sharing an attached USB disk (Samba)
5
Advanced Networking
Advanced Networking
Introduction
Configuring a static IP address
Creating a firewall with ufw
Remote access to a desktop session (xrdp)
Remote access to the monitor (x11vnc)
Installing a web server (Apache, lighttpd, Nginx)
Installing a wiki (mediawiki)
Creating a wireless access point with hostapd
Installing a network trace utility
Installing a network protocol analyzer
Enabling the IPv6 network protocol
6
IoT – Internet of Things
IoT – Internet of Things
Introduction
Easy access to hardware
Installing the GrovePi
Controlling devices from a web page
Connecting to an IoT platform
Creating an IoT gateway
7
Clustering
Clustering
Introduction
Installing a high-availability load balancer
Installing a distributed filesystem
Creating a supercomputer
Index
Index

Controlling devices from a web page

This recipe uses a simple Python script to show how devices attached to the Raspberry Pi can be controlled from a web page.

The web.py programming framework for Python can be used to serve web pages from scripts that are written in the Python programming language. This recipe features a Python script that serves a web page displaying the current state of a GrovePi LED and enables a button on the web page to turn a GrovePi LED on and off. It is a simple example, but is an excellent foundation for simple Internet of Things projects.

After completing this recipe, you will have installed and applied the web.py Python framework to serve a web page that can be used to turn an LED on and off.

Getting ready

The following are the ingredients for controlling devices from a web page:

  • An initial setup or basic networking setup for the Raspberry Pi that already has the GrovePi interfaces and drivers installed (see the previous recipe, Installing the GrovePi, for instructions...

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