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Next Generation Network Developer Skills

Kyle MesteryPrincipal Engineer, Office of the Cloud CTO, Cisco

My background• Principal Engineer, Office of the

Cloud CTO• Chief OpenStack Architect

• OpenStack Neutron Core Team Member• Open vSwitch VXLAN contribution

• Modular Layer 2 (ML2) Plugin

• OpenDaylight OVSDB Contributor• OpenDaylight MechanismDriver for ML2

• Open vSwitch Contributor• VXLAN

• Flow-based tunneling

• libvirt contributor• Open vSwitch Support

• Live migration support for OVS

The Frontier of Networking

Existing

CLIs

Closed Source

Vendor Lead

Classic Network Appliances

New

APIs

Open Source

Customer Lead

Network Function Virtualization (NFV)

Components of the New Frontier

All of This Leads Us To …

Software Defined Networking

DevOps Defined Networking

DevOps

People Like SDN Because

SDN promises to make networks:

1. Dynamically provisioned

2. Provide scalable capacity

3. Provide abstracted HW complexity

4. Bandwidth on demand

Arming Yourself To Explore This New Frontier

Transformation of Network Engineer

1. Programming skills

2. Tools

3. Getting your hands dirty

From Engineer to Developer

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Programming Skills

5 Reasons Why You Should Learn Basic Programming

1. You’re already programming, even if you don’t know it

2. Everything has an API

3. It’s all about the applications

4. Prototypes

5. New skills, new opportunities

It’s All About the Apps

Top 10 Languages on github.com

Rank Language # of Repositories Created

1 JavaScript 264131

2 Ruby 218812

3 Java 157618

4 PHP 114384

5 Python 95002

6 C++ 78327

7 C 67706

8 Objective-C 36344

9 C# 32170

10 Shell 28561

[1] As of August, 2013: http://adambard.com/blog/top-github-languages-for-2013-so-far/

What are Open Source Networking Projects

Written In?

Project Primary Language Written In

Open vSwitch C

OpenDaylight Java

Floodlight Java

Ryu Python

OpenStack Python

CloudStack Java

OpenContrail C++

What Languages To Learn

Focus on languages for the APIs you are using Java Python Maybe C and/or C++

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Tools of the Trade

IRC (Internet Relay Chat)

Open Source projects all use IRC

Recommended channels in Open Source networking: #openstack-neutron #opendaylight #opendaylight-ovsdb #openvswitch

Mailing Lists

Open Source projects all use mailing lists for communication Documents things in the

archives Allows searching for new

participants

git

Source code management tool of choice github is used to share

code Most projects use github If github is not used, the

projects likely have their own git server

Get a github ID https://github.com/

Wikis

All Open Source projects have Wikis

Provide an easy way to share information Warning: Information can

get stale Warning: Humans don’t like

correcting stale information

An easy way for new contributors to help is to update wikis!

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Getting your hands dirty

Linux

The kernel of choice in the Open Source world KVM or Xen for virtualization OpenStack CloudStack

Prevalent in IaaS world Amazon AWS Rackspace

Popular Switch Operating System Cisco NX-OS Arista EOS Cumulus Linux

Datacenter On Your Laptop

Open vSwitch

Open vSwitch is an Open Source extensible virtual switch Licensed under the Apache 2.0

and GPL licenses

Supports a wide array of protocols Netflow sFlow SPAN RSPAN CLI LACP

Open vSwitch Specifics

Security

Monitoring

QoS

Automated Control

Overlay network building block

Used by many virtualization and IaaS platforms

Kernel module is upstream

Many Linux platforms supported

Sample Open vSwitch Commands

OpenDaylight

OpenDaylight’s mission is to facilitate a community-led, industry-supported open

source platform, including code and architecture, to

accelerate adoption of Software-Defined Networking

and Network Functions Virtualization.

OpenDaylight Project Framework

OpenDaylight “Hydrogen” Release

OpenDaylight GUI

OpenStack

To produce the ubiquitous open source cloud computing

platform that will meet the needs of public and private

cloud providers regardless of size, by being simple to

implement and massively scalable.

OpenStack Official Programs

Compute (Nova)

Object Storage (Swift)

Image Service (Glance)

Identity (Keystone)

Dashboard (Horizon)

Networking (Neutron)

Block Storage (Cinder)

Telemetry (Ceilometer)

Orchestration (Heat)

Database Service (Trove)

Bare Metal (Ironic)

Queue Service (Marconi)

Data processing (Savanna)

Common Libraries (Oslo)

Infrastructure

Documentation

Quality Assurance (QA)

Deployment (TripleO)

Devstack (DevStack)

Release cycle management

OpenStack CLI: Boot a VM

OpenStack CLI: List VMs

OpenStack Horizon GUI

devstack

DevStack’s mission is to provide and maintain tools

used for the installation of the central OpenStack services from source (git repository

master, or specific branches) suitable for development and

operational testing. It also demonstrates and documents examples of configuring and running services as well as command line client usage.

devstack: local.conf example

Puppet, Chef, Ansible, Salt

Where Does This Lead Us?

Linux (Fedora, Ubuntu, Red Hat, etc.)

Xen or KVM

OpenStack or CloudStack or Eucalyptus or oVirt

OpenDaylight

Automation

At the heart of all of this …

IaaS for the masses!

SDN for the masses!

DevOps at scale!

Applications! Yay to applications!

Building Blocks Are Here

References

VirtualBox

OpenStack

OpenDaylight

Open vSwitch

Freenode

Github

stackforge

devstack

Puppet Labs

Chef

Ansible

Saltstack

References Cont.

Brent Salisbury’s Blog: http://networkstatic.net/

Scott Lowe’s Blog: http://blog.scottlowe.org/

Kyle Mestery’s Blog: http://www.siliconloons.com/