Ice Breaker with DevOps

Mukta Aphale, DevOps Architect

Hey DevOps, where do I start with you?!

Step 1: Make A Start!

Learning DevOps is like learning to ride a bicycle.You learn to balance, only when you are in motion!

Make A Start To Realise...

● DevOps replaces human tasks● There are no limits to what you can

automate● You will be creating Robots● You need to be creative, innovative● You need to be techy too

Step 2: Change

● Start with a clean slate● Keep your past behind● Be ready for change● Understand you need to: learn-unlearn-

learn-repeat● Keep your mind open● Be proactive, you need to drive yourself

New Culture

● DevOps brings in a new culture● You won't have any requirements● You won't be given any design● You won't be shown any problem● A lot of ideas would be thrown at you● And you would be called to help!

Step 3: Dehumanize!

● Follow the mantra: “Any task should be done only once!”

● Start by writing small scripts to automate any task you would have to do manually

● If it can't be scripted, document it● The challenge should be: the 2nd time you have to

do the same task, it should take 10 times less time than the first attempt!

Step 4: Understand Fundamentals

● DevOps is here to automate nearly everything

● But you can start with some tasks which are the bare minimum needs of DevOps automation

● Next few slides will explain these fundamental concepts

Jack of All...

● Go through each of the following slides thoroughly

● Understand all the terms and concepts that follow

● And you would be a Jack of DevOps!

Master One Topic

● Pick up a topic that interests you more● Take a deep dive into that topic to master

it!

Version Control

● Source Code Version Controlo Github is the most popular

● Keep in mind that “Version Control” can also be applied to infrastructure, configuration and databases, but this can be studied in depth in later stages of your Learning & Implementing DevOps!

Continuous Integration

CI enables early detection of problems in integration. It includes several components, explained further● Automated Code Review● Automated Code Analysis● Build Tools● Automated Unit Tests● Automated Integration Tests

Automated Code Review and Analysis

● Dont go by the dull title. This is quite interesting when implemented. It keeps the developer’s code on track and reduces code quality issues!

● Tools like Gerrit can be used for setting up code review process● Go through the concepts and explore the tools listed below

o Static Code Analysiso Lint toolso SonarQubeo JArchitecto Codacyo CodeClimate

Build Tools

Build tools convert source code to binary, create executables (eg: jar), can run tests and create documentation. Listed below are some popular build tools. Understand any one build tool to know the intricacies of building a project.● Maven● Gradle● Ant● make

Artifact Management Repository

● Artifacts are generated as a result of the builds. They can also be called as “application” or “executables”

● Artifacts are also those libraries needed by the build (called “dependencies”)

● We need to control the version of the dependencies● We need to manage releases of the application● Hence artifact management is important● Explore the existing popular solutions:

o Artifactory (PaaS offering)o Sonatype Nexus

CI Server

● Continuous Integration server can be setup in-house or used as a PaaS solution.

● Try some hands-on with both CI servers mentioned belowo Hosted Travis-CIo Jenkins

Configuration Management

● This literally translates to “Infrastructure Automation”

● Following are the 3 most popular CM tools. Study 2 of them well.o Ansibleo Puppet OR Chef

Continuous Delivery

CD is a natural extension to CI: Teams can ensure that every change to the system is releasable and that any version can be released at the click of a button.

Release Management● With the concepts we have learnt so far, you would realise that we would

end up with many versions of the build. ● We want to release the right versions, frequently, and get a feedback about

how it performs. This is release management. ● The solution to deployment and release management differs for every use

case.○ CM tools like Ansible can be used○ CI Server like Jenkins can be used○ Capistrano is a standalone tool

● Understand theoretically how each of the above works. Note the differences in each approach and which would be used in which use cases.

Monitoring

Application and System Monitoring are one of the important tenets of DevOps. Explore some of the tools below, try some hands-on:● ELK Stack● New Relic● Server Density

Assignment: Setup a CI/CD Pipeline

● Create a HelloWorld project on github● Use hosted Travis-CI as build server● With every git push:

o HelloWorld build should be triggered in Travis-CIo Run unit testso If they pass, save the build output to Nexuso Trigger a playlist in Ansible, which will deploy the build to a another

machine● With every successful deployment, relay the feedback (send emails)● With a failure in any of the steps, send the feedback to the developer with

the details of failure

Are you ready to move deeper into DevOps?

● Document your understanding till now● List down how you can better the CI/CD

pipeline● List down what you think could also be

automated in your assignment● Get set to take a deep dive into a topic that

you wish to master

Thanks!

You can get in touch with me:amukta@gmail.com

Twitter: @muktaa