An introduction of open source.

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Open Source Community and How to Join HUNG-WEI CHIU, LINKER NETWORKS.INC [email protected]

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Who Am I  Hung-Wei Chiu (hwchiu)  [email protected]  hwchiu.com  Experience  Software Engineer at Linker Netowrks  Software Engineer at Synology (2014~2017)  Co-Found of SDNDS-TW  Open Source experience  SDN related projects (mininet, ONOS, Floodlight, awesome-sdn)  Others

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Linker Networks  Provide vitalization platform for 5G/AI  DCOS, Kubernetes  Cooperate with ONF(Open Network Foundation) to provide Kubernetes solution.  Many community founder/co-founder  GolangTW  Docker.Taipei  SDNDS-TW

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Outline  What is Open Source  Why Open Source  Business about Open Source  How to join Open Source

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Before we start

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2017/11/07~2017/11/09 San Jose

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FUTUREWEI  Head of US Open Source Program Office  Senior Director of Strategy and Business Development  How HUAWEI treat Open Source

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What is Open Source?

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Have You Heard Of  Operations System  Linux/FreeBSD/Android  Version Control  Github/Git/Bitbucket  Deep Learning  Tensorflow/Darkflow/ImageNet/Yolo/Caffe  Programming Language  Nodejs/Go/Python  Browser  Chrome, Firefox

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Open Source Everywhere

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What is Open Source  From OSI (Open Source Initiative)  Free Redistribution  Source code  Derived work  No Discrimination Against Persons or Groups/Fields of Endeavor

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The Opposite Is Closed Source  Microsoft Windows  Microsoft Office  Microsoft Internet Explorer  Mac OSX  Adobe Photoshop  Others

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Why Open Source?

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For Software Itself  Given enough eyeballs, all bugs are shallow  Tends to produce better quality software  Hard to insert backdoors  You can watch whole Linux Kernel source code  https://elixir.free-electrons.com/linux/latest/source

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For Software Itself  Patch on your own schedule  Make it better  When a bug/vulnerability is discovered  Don’t wait the specific vendor/owner to fix it.  You can fix it  Cisco says router bug could be result of ‘cosmic radiation’

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For Developer  Shift developers from low-value work to high-value work  Don’t reinvent wheels  Stand on the shoulders of giants  If you want to write a simple ”Hallow World” application.  Kernel (support keyboard, monitor, mouse)  Editor (modify the language)  Compiler/Assembler (for existing language)  Write your application printf(“Hello World\n”)

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For Developer  Make your coding skill better  Readability  Flexibility  Stability  There are also many tools/docs can help you to improve your coding style.  Pylint, jslint, golint, etc.  Coding style reference (google)  Diagnostic tool

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For Developer  Learn how to work with others.  Document  Version control  Discuss  Peer Review/Code Review  Better coding style  Avoid blind spot

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For Developer  Gain reputation/opportunity  A story about my friend  Research SDN  ONOS controller, no IPv6 features  Intern  Works on Silicon Valley now.

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Business How about business?

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Non-Profit Organization  Linux Foundation  Linux  OpenStack Foundation  OpenStack  Open Networking Foundation  ONOS/CORD

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Non-Profit Organization  Member/Public  Member fee  High priority support  Board  Lead some open source projects  Standard/Technique

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Profit Company  Save Time  System Integration Company  Provides  Customized feature  Better support  Other  Provide a product  Partial open source (License)  Enterprise/Community version

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For Example  Linux  Red Hat Enterprise Linux (Red Hat)  Ubuntu (Canonical)  OpenStack  99Cloud  EasyStack  InwinStack

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Another-Example CSCC  Save Money  Computer Science Computer Center  For NCTU-CS department  Maintain Linux/BSD workstations  Provide services for CS departments

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A story

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How to use open source to build a wireless router?

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Wireless Router

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Features (Software)  Web UI management  Traffic/Parental Control/QoS  Security (IPS/IDS/DPI)  VPN Server  Port Forwarding/Port Trigger  Filter/Firewall  IPv6/PPPoE/DHCP/NAT  Dual Homing/LACP/Bonding

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First  You need to have a kernel

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By the way  Linux has many friends.  User space tools  Iptable  tc  Kernel function  Netfilter  Tc  Conntrack  Bonding

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Features (Software)  Web UI management  Traffic/Parental Control  Security (IPS/IDS/DPI)  VPN Server  Port Forwarding/Port Trigger  Filter/Firewall  IPv6/PPPoE/DHCP/NAT  Dual Homing/LACP/Bonding

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Web UI  Web Server  Nginx/Apace/Lighttpd  Front-end language  JS/CSS/HTML

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Security (IPS/IDS/DPI)  IPS/IDS  Snort  Suricata  DPI  NDPI  Netifyd

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VPN  VPN Server  OpenVPN  SoftetherVPN  Linux Kernel support  IPSec  Strongswan  libreswan

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Combine All

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How to join Open Source ?

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Which Open Source Project ?  You’re using now  The language/tools/software you know  There are something you want to learn or have interest in.  You want to make it better

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For Example  Any programming language  NodeJs, Python, React, go  Any frameworks  Django,Rais,  Any infrastructure/deployment/virtualization  Kubernets, OpenStack, Docker, Ansible  Any useful tools  Any funny side projects

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How to contribute/join it ?  Document  Report Bug/Fix Bug  Test  Promote  Discuss  Translate

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Document  Official website  wiki/github  Personal blog/gitbook  Awesome series  https://github.com/sindresorhus/awesome  Just document everything you know.

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Example  Github project:  state-of-the-art-result-for-machine-learning-problems

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Report Bug/Fix Bug  Report bug  Github issue  Post on forum/mail/slack/irc  Find a bug and fix it.  Hard to join.  Github pull request  Discuss on forum/mail/slack/irc/github

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Another Story  99Cloud  Openstack SI  200RMB per commit

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Test  Test it and report bug.  You can also writing testing for them.  Unit Test  Code coverage  Software Integrity

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Promote  Hold a local meetup/conference  Promote it  How to use  Help someone  Local community  Personal blog/website

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Discuss  Forum, IRC ,Slack ,Mail, etc.  Stack Overflow  Github issue/pull request

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Translate  I18n  Internationalization

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Next Step  Don’t be shy  Don’t be afraid  Don’t be scared  Just do it.

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Summary  Make the world better  No need to reinvent the wheel  Not only be a taker, but also be a giver  It’s never to late to join Open Source