The document provides an introduction to DevOps. It explains that DevOps aims to integrate developers and operations teams to improve collaboration and productivity by automating infrastructure, workflows, and measuring application performance. This addresses issues where development teams faced delays deploying code and operations teams struggled with managing an increasing number of servers. DevOps adopts practices like automating infrastructure configuration and code deployment to enable continuous delivery and fast, reliable releases while allowing development and production environments to be identical.

1. DevOps Introduction
Ahmed Kamel
Lead System Engineer @ArabHosters
LinkedIn
a.kamel@arabhosters.com

2. The story
● Information Technology Companies are
selling Products/Services to customers.
● Products/Services are written by developers.
● Products/Services are deployed operations.

3. What is Dev?
● Developer
o Responsible for coding:
▪ New Products.
▪ New Features.
▪ Security Updates.
▪ Bug Fixes.

4. What is Ops?
● Operations: System Administrator/Engineer
o Responsible for:
▪ 99.9 % UPTIME.
▪ Code Deployment.
▪ Performance.
▪ Monitoring.
▪ System Security.

5. The Problem
● Development:
o Delay of code deployment into production
environment.
o Losing market competition to those who are able to
deploy code faster.
● Operations:
o Number of managed servers increases gradually.
o Application code diagnostic and errors spotting.

6. Solution
DevOps is about integrating developers and
operations teams to improve collaboration and
productivity by Automating infrastructure,
Automating workflows and measuring
application performance.

7. Automation
● Automating infrastructure.
● Automating workflows.
● Automating code testing.
● Automate everything.

8. Development Environment
= Production Environment
● Automating infrastructure will allow to have
an identical development and production
environment.
● Editing small chunks of code will be possible
and having a fast pace code release with
new feature, security/bug fix will be possible.
● Rolling back to previous code build will be an
easy task with deployment automation.

11. Monitor, Measure and Improve The
Code
● Adopting frequent code deployment will lead
to iterative process for monitoring measuring
and improving the code and operations on
daily basis.
● Which will help in fulfilling market needs on
time.

12. Old style vs DevOps style
● Software developers and operation
engineers were working separately.
● DevOps approach make them both work
together to write configuration management
code that describes how things could be
built.
● Which leads to reducing deploy time,
eliminating deployment fears and fulfilling

13. Infrastructure Automation

14. Source Control System
● Using source control system like GIT to manage, track
and document both the application code and
configuration management code.
● Leads to real time application performance monitoring
and optimization due to the ability to spot bugs or code
bottlenecks via monitoring tools and fix/deploy the new
release or rollback to previous sane one in a very little
time due to deployment automation achieved by config
management.
● Easily allows developers and operations to see the
performance impact of their new changes.

16. So how to adopt DevOps approach?

20. Tools
● Source code control system: GitHub.
● Code testing: Jenkins.
● Code Deployment: Chef, Puppet, SaltStack.
● Metrics: Graphite, LogStash.
● Monitoring: NewRelic, Nagios, Graphite.

22. SaltStack

23. SaltStack Walk-through
● Remote Execution.
● Configuration Management.
● WalkThrough.
● Average state example.
● More complex state example.
● SaltStack Can Manage Wide Range Of
Cloud Infrastructures Also.
● Including OpenStack.

24. References
● List of useful references and which was used
in creating this presentation and others:
○ Vidoes:
■ What is DevOps? - In Simple English
■ Understanding DevOps
■ What is DevOps? A Simple Explanation for Non-Techies
■ Docker and DevOps by Gene Kim
■ IBM DevOps: Continuous delivery of software-driven innovation

25. References
● List of useful references and which was used
in creating this presentation and others:
○ Docs:
■ http://docs.saltstack.com/en/latest/topics/tutorials/walkthrough.html
■ http://www.rackspace.com/blog/get-to-know-the-devops-tools-supported-by-rackspace-specialists/
■ https://www14.software.ibm.com/webapp/iwm/web/signup.do?source=swg-rtl-sd-
wp&S_PKG=ov18162
■ http://docs.saltstack.com/en/latest/topics/cloud/
■ http://www.rackspace.com/devops/resources/