The document provides an overview of the top 10 DevOps tools, including Git, Jenkins, Docker, Puppet, Ansible, Nagios, Selenium, Chef, Splunk, and the ELK stack. Each tool is introduced with its features and benefits, emphasizing their roles in automation, configuration management, monitoring, and data analysis within DevOps practices. The document highlights the significance of these tools in enhancing development efficiency and operational performance.

1. Top 10 DevOps Tools

2. Content
• Git
• Jenkins
• Docker
• Puppet
• Ansible
• Nagios
• Selenium
• Chef
• Splunk
• ELK Stack

3. Introduction into Git
• Git is currently the most popular implementation of a distributed version control
system.
• Git originates from the Linux kernel development and was founded in 2005 by
Linus Torvalds. Nowadays it is used by many popular open source projects, e.g., the
Android or the Eclipse developer teams, as well as many commercial organizations.
• The core of Git was originally written in the programming language C, but Git has
also been re-implemented in other languages, e.g., Java, Ruby and Python.

4. Features
• Free-Open Source Tool
• Feature Branch Workflow
• Allows Distributed Development
• Supports Pull Request
• Enables Faster Release Cycle

5. Introduction into Jenkins
• Continuous Integration, also know as CI, is a cornerstone of modern software
development. In fact it is a real game changer—when Continuous Integration is
introduced into an organization, it radically alters the way teams think about the
whole development process.
• It has the potential to enable and trigger a series of incremental process
improvements, going from a simple scheduled automated build right through to
continuous delivery into production.
• A good CI infrastructure can streamline the development process right through to
deployment, help detect and fix bugs faster, provide a useful project dashboard for
both developers and non-developers, and ultimately, help teams deliver more real
business value to the end user. Every professional development team, no matter
how small, should be practicing CI.

6. Features
• Free Open-Source Tool
• Integrate all your DevOps stages with the help of around 1000 plugins
• Script your pipeline having one or more build jobs into a single workflow
• Easily start your Jenkins with its WAR file
• Provides multiple ways of communication: web-based GUI, CLI and REST Api

7. Introduction into Docker
• Docker is a tool that enables you to create, deploy, and manage lightweight,
stand-alone packages that contain everything needed to run an application
(code, libraries, runtime, system settings, and dependencies). These packages
are called containers.
• Each container is deployed with its own CPU, memory, block I/O, and network
resources, all without having to depend upon an individual kernel and operating
system. While it may be easiest to compare Docker and virtual machines, they
differ in the way they share or dedicate resources.
• Containers help expand your Linode’s functionality in a number of ways. For
example, you can deploy multiple instances of nginx with multiple stagings
(such as development and production). Unlike deploying multiple virtual
machines, the deployed containers will not tax your Linode’s resources.

8. Features
• Use Docker container with any language
• Ship the container wherever you want, be it QA, your team or even the cloud
• Scale up to 1000’s node
• Update with zero downtime

9. Introduction into Puppet
• Puppet is the most popular and de facto standard for configuration
management with more than 36,000 organization across the globe with
75% of Fortune 100 companies using Puppet. Puppet is popular for
configuration management in automating the delivery and management
of hybrid infrastructure.
• With Puppet, the system administrators will be able to control and
enforce consistency across infrastructure using a common easy to read
language. Sharing, Testing and enforcing the changes across cloud
platforms and data center is not going to be breathtaking tasks anymore
when Puppet is used.

10. Features
• Based on master-slave architecture
• Open-source tool
• Long commercial track record

11. Introduction into Ansible
• Ansible is a general purpose automation tool that may be used for configuration
management or workflow automation. Configuration management is an
"infrastructure as code" practice that codifies things, e.g. what packages and
versions should be installed on a system, or what daemons should be running.
Workflow automation may be anything from provisioning cloud infrastructure to
deploying software.
• This article starts with a feature overview, a description of how Ansible fits with
Chef or Puppet, and technical examples of configuration management and
workflow automation. This article will give you a feel for what Ansible can do, and
the high-level topics for further learning.

12. Features
• Open source configuration management tool
• Supports push configuration
• Based on master-slave architecture
• Completely agentless and uses simple syntax written YAML

13. Introduction into Nagios
• Although there are many proprietary monitoring tools out there to select from
depending upon the requirement, no proprietary tool can provide the peer review,
source code modification, and version iterations that an open source tool provides.
• Nagios is an open source server and network monitoring tool that provides all those
capabilities we discussed above in one package. Nagios monitors the servers and
network devices(in fact i must say any network device which is accessible with an
IP address can be monitored using Nagios) and alerts you when a particular service
that's being monitored goes wrong, and also will alert you when the service comes
back to normal required state. Nagios is capable of doing the following things

14. Features
• Monitors and troubleshoot server performance issues
• Plan infrastructure upgrades before outdated systems cause failures
• Automatically fix problems when detected

15. Introduction into Selenium
• Selenium is a free (open source) automated testing suite for web applications across
different browsers and platforms.
• It is quite similar to HP Quick Test Pro (QTP now UFT) only that Selenium
focuses on automating web-based applications. Testing done using Selenium tool is
usually referred as Selenium Testing.

16. Features
• Free Open-Source Tool
• Create robust, browser-based regression automation suites and tests
• Write test scripts in multiple languages like Java, Python, C#, Ruby, Perl,
Php, JavaScript
• Supports Multiplatform for testing like ios and Android
• Easy to build a keyword driven framework for a WebDriver

17. Introduction into Chef
• Make the testing and deployment of your projects fast, painless, and inexpensive.
• Treating infrastructure as code refers to writing code, via any descriptive language,
to manage server provisioning and configuration process in addition to deployment
of actual application code. It involves adopting automated testing and related
practices that are already used in modern application development, such as version
control, integration testing, small deployments, use of design patterns etc.
• Following those practices and rules means writing code to provision and manage
the configuration of your servers. By doing that you will gain safe, repeatable and
automated processes.

18. Features
• Another open-source configuration management tool
• Supports multiple platforms like AIX, RHEL/CentOS, FreeBSD
• Easy to integrate with cloud-based platforms
• Active, smart and fast-growing community support

19. Introduction into Splunk
• Splunk is a powerful platform for analyzing machine data, data that machines emit
in great volumes but which is seldom used effectively. The fastest way to
understand the power and versatility of Splunk is to consider two scenarios: one in
the datacenter and one in the marketing department.
• Splunk produces software for searching, monitoring, and Splunk gathered all of the
relevant information into a central index that you could rapidly search. Splunk can
provide a detailed window into what is happening in your machine data. Splunk can
also reveal historical trends, correlate multiple sources of information, and help in
thousands of other ways.

20. Features
• Store, search, analyze and visualize the machine-generated data
• Ingest data in multiple file format
• Create knowledge objects for operational intelligence
• Monitors business metrics to get log insights
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21. Introduction into ELK Stack
• The products we build often rely on multiple web servers and/or multiple database
servers. In such cases, we often don’t have centralized tools for analyzing and
storing logs. Under such circumstances, identifying different types of events and
correlating them with other types of events is an almost impossible mission.
• A single exception condition, somewhere in the middle of the system, can be
disastrous for both the end user and the development team. A user may end up
looking at a blank page after submitting payment for your service, or a large packet-
loss can occur within your network, resulting in stretching a simple 10-minute job
into a 10-hour headache.

22. Features
• Open Source tool with multiple plugins
• Lightweight tool, easy to deploy
• Perform search in near-real time
• Collects and Analyse logs from an excel file to a database or server
• Active and Supportive discussion forum

23. Thank You
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