Book Image

Mastering Python Networking

Book Image

Mastering Python Networking

Overview of this book

This book begins with a review of the TCP/ IP protocol suite and a refresher of the core elements of the Python language. Next, you will start using Python and supported libraries to automate network tasks from the current major network vendors. We will look at automating traditional network devices based on the command-line interface, as well as newer devices with API support, with hands-on labs. We will then learn the concepts and practical use cases of the Ansible framework in order to achieve your network goals. We will then move on to using Python for DevOps, starting with using open source tools to test, secure, and analyze your network. Then, we will focus on network monitoring and visualization. We will learn how to retrieve network information using a polling mechanism, ?ow-based monitoring, and visualizing the data programmatically. Next, we will learn how to use the Python framework to build your own customized network web services. In the last module, you will use Python for SDN, where you will use a Python-based controller with OpenFlow in a hands-on lab to learn its concepts and applications. We will compare and contrast OpenFlow, OpenStack, OpenDaylight, and NFV. Finally, you will use everything you’ve learned in the book to construct a migration plan to go from a legacy to a scalable SDN-based network.
Table of Contents (22 chapters)
Title
Humble Bundle
Credits
Foreword
About the Author
About the Reviewer
www.PacktPub.com
Customer Feedback
Preface
12
OpenStack, OpenDaylight, and NFV

The Ansible vault


As you can see from the previous section, many a times, the Ansible variable often provides sensitive information such as username and password. It would be a good idea to put some security measures around the variables so that we can safeguard against these information. The Ansible vault provides encryption for files rather than using plain text.

All Ansible Vault functions start with the ansible-vault command. You can manually create a encrypted file via the create option. You will be asked to enter a password. If you try to view the file, you will find that the file is not in clear text:

$ ansible-vault create secret.yml
Vault password:

$ cat secret.yml
$ANSIBLE_VAULT;1.1;AES256
336564626462373962326635326361323639323635353630646665656430353261383737623<skip>653537333837383863636530356464623032333432386139303335663262
3962

You can later on edit the file via the edit option or view the file via the view option:

$ ansible-vault edit secret.yml 
Vault password:

$ ansible...