Continuous Integration With Jenkins

View DevOps course details at www.edureka.co/devops
DevOps: Continues integration with Jenkins

www.edureka.co/devops
Objectives
At the end of this module, you will be able to
 Introduction of DevOps
 DevOps Life cycle
 Different stages in DevOps
 Continuous Integration
 Introduction to Jenkins
 Demo on Jenkins

What is DevOps
DevOps is a software development method that stresses communication, collaboration and integration between
Software developers and information technology ( Operations ) professionals to enable rapid evolution of products
or services.

Development & Operation (DevOps)
“Dev” is used as a shorthand for developers in
particular, but in practice it is even wider and it
means that “all the people involved in
developing the product,” that include the
product, QA, and other kinds of disciplines
“Ops” is a blanket term for systems engineers,
system administrators, operations staff, release
engineers, DBAs, network engineers, security
professionals and various other sub-disciplines
and job titles”

Development & Operation (DevOps)
DEVOPS
Development
(Software
Engineering)
Quality
Assurances
Technical
Operations

Roles of Developers :
 Add or modify features
 Try with new technologies
Roles of Operations :
 Create stability
 Create or enhance services
Development & Operation

Slide 7Slide 7 www.edureka.co/devops
Why DevOps?
Customers Requirements
Dev and
Testing Team
Operations
Gap Between
Developers and
Operations

Why DevOps?
Development
Operations
Change
» Developer always looks for changes
» They try to implement every new
techniques introduced
» Change is the enemy for Operations
» It is not reliable and leads to
instability

Dev Tools Ops Tools
» Difficult to integrate the tools
» Very less interest in learning others tools
» Different implementation of similar tools
Why DevOps?

During Deployment
Send out the artifacts based on the
requirement received from clients
Manually hacks the scripts received and
changes the configuration files to reflect
changes in production environment
leading to bugs leading to recover
Development Operations
Why DevOps?

All the artifacts are fine, the error
is because of admin issue. Tester
was given wrong set up
Developer gave faulty artifacts
Development
Operations
Day 1: Loss of Work
Why DevOps?

Developer is working on his machine but he is
facing some firewall issue for a local tool
because of which he is unable to work
Development
He reaches out to local IT team and they
point him to the infrastructure team and
finally the issue is resolved
Day 2: Loss of Work
Firewall
Why DevOps?

After deployment ,during testing after
few scenario tester sees some anomalies
and raises some defects
Day 3: After Deployment
Operations
developer checks in and figures
out that correct DB was not
deployed
Development
Why DevOps?

DevOps as the Solution
Instead of seeing these two groups as silos who pass things along but don’t really work together, DevOps
recognizes the interdependence of software development and IT operations and helps an organization to produce
software and IT services more rapidly, with frequent iterations
DevOps bridges the gap between agile software development and operations

DevOps Skills
DevOps Tools – Ability to administer and customize them
Scripting Skills – Demonstrates the traditional scripting skills to IT operations
Coding Skill – Should possess developer skills in using automation
Process re-engineering Skills – Reflects the holistic view of IT and development as a single system, instead
of two different functions
Skills Products
Linux/Unix Commands & Administration
Shell Scripting Bash, Sed/Awk
Coding Perl, Python, Ruby
Configuration Management Puppet, SaltStack, Chef
Bare Metal Configuration Cobbler, Foreman, PXE, DHCP, DNS
DevOps Skill Matrix

DevOps Cycle

Provisioning Configuration Integration
Load Balancer
WebServer WebServer
DB Master
DB Slave DB Slave
Load Balancer
WebServer WebServer
DB Master
DB Slave DB Slave
DevOps Life Cycle

DevOps Tools
 Tools for DevOps can be categorized based on the layer of Automation you choose
 Each layer has its own tools to build Automation
Infrastructure Automation 1. Cobbler
2. Foreman
3. Crowbar
Configuration Management 1. Puppet
2. SaltStack
3. Chef
Continuous Integration 1. Jenkins, Hudson
2. SVN, Git, Perforce
3. Ant, Maven
Continuous Deployment 1. Capsitrano
2. Custom Tools
3. Yum, Deb, RPM
Monitoring 1. Nagios, Sensu, Zabbix
2. Custom Tools

Revision control System 1. Git
2. Cvs
3. Subversion
Software Configuration Management 1. Clearcase
2. perforce
3. Accurev
virtualization management Software 1. Vcentre
2. Hyper-V
DevOps Tools (Contd.)

Integration Engineer Cloud Specialist
Automation Engineer Release Engineer
DevOps Roles

The most common DevOps challenges are:
Cultural mindset as “How the typical mindset of people could be taken off “
Transitions as “How quickly an organization can build the skill set and cross train people”
DevOps is not a technical problem, it is a business problem as “stake holders are engaged more often”
DevOps is not about cool tools
Other DevOps Challenges

http://www.edureka.co/devops
“Continuous Integration is a software development practice where members of a team integrate their work
frequently, usually each person integrates at least daily - leading to multiple integrations per day. Each
integration is verified by an automated build (including test) to detect integration errors as quickly as possible”
– Martin Fowler
Continuous Integration

At a regular frequency (ideally at every commit), the system is:
Integrated
All changes up until that point are combined into the project
Built
The code is compiled into an executable or package
Tested
Automated test suites are run
Archived
Versioned and stored so it can be distributed as is, if desired
Deployed
Loaded onto a system where the developers can interact with it
Continuous Integration

 Immediate bug detection
 No integration step in the lifecycle
 A deployable system at any given point
 Record of evolution of the project
Continuous Integration - Benefits

 Code Repositories
SVN, Mercurial, Git
 Continuous Build Systems
Jenkins, Bamboo, Cruise Control
 Test Frameworks
JUnit, Cucumber, CppUnit
 Artifact Repositories
Nexus, Artifactory, Archiva
Continuous Integration - Tools

Jenkins provide continuous Integration services for software development. It’s container is based on Tomcat
and can work with various revision control systems like SVN, CVS, Git, etc.
This originally started as Hudson and then after Oracle’s claim, the name Jenkins was coined
It includes a feature-rich web user interface that provides the
ability to trigger builds, customize builds, manage resources,
manage plugins, and many other features
Jenkins

Builds can be started by:
» Commit in a version control system
» Scheduling via a cron-like mechanism
» Building when other builds have completed or by requesting a specific build URL
Jenkins (Contd.)

Components of Build

Jenkin Flow

Demo on Jenkins

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LIVE Online Class
Class Recording in LMS
24/7 Post Class Support
Module Wise Quiz
Project Work
Verifiable Certificate
Course Features

Questions

 Module 1
» Introduction to DevOps and its Necessities
 Module 2
» Understand Common Infrastructure Servers
 Module 3
» Implement Automated Installations and Deployments
 Module 4
» Understand Performance tuning aspects and basic
Security for Infrastructure
Course Topics
 Module 5
» Basics of Bash/Python Scripting
 Module 6
» Basics of Virtualization and it's Concepts
 Module 7
» Monitoring And Logging
 Module 8
» The Useful DevOps Tools & Commands

Continuous Integration With Jenkins

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