Decoding Puppet & Jenkins via DevOps

Slide ‹#›© 2015 BlueCamphor Technologies (P) Ltd. www.skillspeed.com

Decoding Puppet andJenkins via DevOps

© 2015 BlueCamphor Technologies (P) Ltd.

Session Objectives

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This session will help you to:

ᗍ Understand DevOpsᗍ Introduction to Puppet - Puppet Architecture

Introduction to Jenkins - Jenkins Workflowᗍ

ᗍ Applications of DevOps in Business & Performance Automation Continuous Release Environmentᗍ

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Configuration Management – Use Case

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Problem Statement:

ᗍ In a large organization with thousands of servers, how will you deploy packages to all the servers or manage configuration across all the nodes?

ᗍ A user makes some changes in files, how will you track what has been changed, which broke the service

ᗍ How to maintain consistency across all nodes?

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Solution

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Puppet (Deployed for large Enterprises) is one of the DevOps tools which helps to manage configuration

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What is DevOps?

A drive to encourage a different, positive and innovative way of thinking to address a common set of issues affecting the experience of living in, working with and using IT in the world we live in today.

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DevOps As A Bridge

DevOps is the bridge between the development and operations excellence

It is an extension of the lean and Agile principles, which streamlines and helps rapid deployments

Development

Operations

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DevOps

"DevOps" is meant to denote a close collaboration and cross-pollination between what were previously purely development roles, purely operations roles and purely QA roles

Application

Platform

Operating System

Infrastructure

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DevOps Optimization Cycle

DevOps

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Faster Time to Market

Increased ROI

Stable System

Continuous Delivery

Reduced Complexity

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Introduction to Puppet

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ᗍ Puppet allows the sysadmin to administrate infrastructure through code

ᗍ Puppet is an open source configuration management tool developed by Puppet Labs

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Puppet Architecture

Puppet is based on Client-Server model with a centralized server and agents running on each node as clients

Client

puppetd

Client

puppetd

Client

puppetd

Puppet Master

Network

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Slide 10

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Puppet Installation

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ᗍ Enable repository, so as to install packages• rpm -ivh http://yum.puppetlabs.com/puppetlabs-release-el-7.noa

rch.rpm

Puppet, System performance and Security aspects

ᗍ Install Puppet• # yum install puppet-server

ᗍ Upgrade to the latest release• # puppet resource package puppet-server ensure=latest

ᗍ Start the master server• # /etc/init.d/puppetmaster restart

© 2015 BlueCamphor Technologies (P) Ltd.

What is Jenkins?

Jenkins is an continuous integration (CI) server, which is used widely for automation of build and deployments

Builds can be started by:ᗍ Commit in a version control systemᗍ Scheduling via a cron-like mechanismᗍ Building when other builds have completed or by requesting a specific build URL

Deploy Manag

e

AssembleModel

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Jenkins Work Flow

Build, test and integrate as quickly as possible

Develop

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Test

Design

Deploy

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Jenkins Setup Demonstration

Lets look at how to setup and configure Jenkins

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Jenkins Installation

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ᗍ Download

• wget -O /etc/yum.repos.d/jenkins.repo http://pkg.jenkins-ci.org/redhat/jenkins.repo

• rpm --import http://pkg.jenkins-ci.org/redhat/jenkins-ci.org.key

ᗍ Install Jenkins• $ yum install Jenkins

ᗍ Add Jenkins to system boot• $ chkconfig jenkins on

ᗍ Start Jenkins• $ service jenkins start

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Big Deal about DevOps

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The biggest business benefit of switching to DevOps is the increase in customer satisfaction

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Benefits of DevOps for IT and Business

Companies that incorporate DevOps practices get more done, plain and simple

ᗍ Technical benefits:• Continuous software delivery• Less complex problems to fix• Faster resolution of problems• Reduced Deployment Failures and Rollbacks• Reduced Time to recover upon Failure• Increased Effectiveness

ᗍ Business benefits:• Faster delivery of features• More stable operating environments• More time available to add value (rather than fix/maintain)

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Job Trends – DevOps

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Slide 20

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