A Complete Guide for Beginners on DevOps Tutorial

What is DevOps?

DevOps is a philosophy that facilitates teamwork between the Design and Operations Team to more quickly deliver code for production in an efficient and repeatable manner. The word ‘DevOps’ incorporates two words “development” and “operations.”

DevOps helps increase the speed of an organization’s application and service delivery. This allows companies to better serve their customers, and to perform more aggressively on the market. DevOps can be described, in simple words, as aligning development and IT operations with better communication and collaboration.

Why is DevOps Needed?

• The engineering and service team had operated in full isolation prior to DevOps.
• Testing and implementation were separated after design-building activities. We thus absorbed more energy than the real cycles of development.
• Without using DevOps, team members spend a great deal of their time testing, deploying, and planning rather than setting up the project.
• Deploying manual code leads to human errors in development
• Coding & running teams have their own different schedules and are not coordinated which creates further delays.

There is a desire by business stakeholders to increase the software delivery speeds. According to the Forrester Consulting Report, only 17 percent of the teams can use quick enough delivery tools. That proves the point of pain.

How is DevOps different from traditional IT?

Let’s equate the traditional waterfall model with DevOps software to understand the DevOps changes.

We believe the application is expected to go live within 2 weeks and 80 percent of the coding is completed. We believe that the application is a fresh start and that the process of buying servers to ship the code has just started-

Old Process

• The Development team works on the research after placing an order for new servers. The Operations team works on detailed paperwork to install the facilities, as needed in companies.
• Failure prediction, reliability, locations of data centers, and storage requirements are distorted as there is no feedback available from developers with deep application expertise.
• The Operations team has no insight on the Design team’s development.
• The load monitoring crashes the program before they go-live.

DevOps

• Design and Operations team work together on the paperwork after placing an order for new servers to set up the new servers. It results in better visibility of the need for the infrastructure.
• Thanks to developers’ inputs, prediction about failover, redundancy, disaster recovery, data center locations, and storage requirements are pretty accurate.
• In DevOps, the Operations team is fully conscious of the developers ‘ development. The Operations team works with developers and creates a monitoring strategy that addresses the IT and company needs together. They also use tools for the advance application performance monitoring (APM)
• The load checking makes the submission a little late, until go-live. The development team gets the bottlenecks fixed quickly. The application is available on time.

Why is DevOps used?

DevOps allows Agile Development Teams to implement Continuous Integration and Delivery. It allows them to bring goods onto the market more quickly.

Other Important reasons are:

1. Predictability: DevOps provides much lower failure rates for new releases

2. Reproducibility: Version all so that you can restore the earlier version at any time.

3. Maintainability: Effortless recovery process in case the current system crashes or is disabled by a new release.

4. Time to market: By streamlining app delivery, DevOps eliminates marketing time by up to 50 percent.

5. Greater Quality: DevOps helps the team offer improved application development quality, as it addresses technology issues.

6. Reduced Risk: DevOps integrates elements of compliance into the lifecycle of software delivery. It helps reduce faults throughout the lifecycle.

7. Resiliency: The software system’s operating state is more stable, safe and it monitors changes.

8. Cost Efficiency: DevOps provides cost-efficiency in the process of software development which is always an expectation of the management of IT organizations.

9. Breaks larger code base into small pieces: DevOps builds on the agile system of programming. Hence, it allows larger codebases to be divided into smaller, manageable chunks.

When to adopt DevOps?

DevOps should be used for large distributed applications such as eCommerce sites or cloud-hosting applications.

When not to adopt DevOps?

In a mission-critical application such as a bank, fuel, and other sensitive data locations, it should not be used. Such applications require strict controls of access to the production environment, a comprehensive strategy for handling change, and access control to data centers.

DevOps Lifecycle

DevOps reflects a deep integration of production and operations. It’s not possible to understand DevOps without understanding the DevOps lifecycle.

Here are brief details about the Life-cycle of Continuous DevOps:

1. Development: In this stage of DevOps the software development is constantly taking place. During this step, the entire process of development is divided into small cycles of growth. This assists the DevOps team is speeding up the process of software development and delivery.

2. Testing: To find and fix bugs in the latest piece of code, the QA team uses tools like Selenium.

3. Integration: New software is incorporated with the prevailing code at this level, and testing is carried out. Only continuous integration and testing allows for continuous development.

4. Deployment: In this step, the process of implementation is continuously taking place. It is carried out in such a way that any changes made in the code at any time should not affect the high traffic website’s functioning.

5. Monitoring: The Service team will take care of improper device actions or bugs that are encountered in development during this process.

DevOps Work Flow

Workflows provide a visual overview of the order the data is being given in. It also tells about actions being done, and output is generated for process operations.

Workflow enables the ability to separate and arrange jobs that users top-require. That also offers configuration employees the opportunity to mimic their ideal process.

DevOps Principles

Here, are six principles which are essential when adopting DevOps:

1. Customer-Centric Action: The DevOps team will take customer-centered measures to invest in products and services on an ongoing basis.

2. End-To-End Responsibility: The DevOps team must provide performance management until the end-of-life is. This will increase the level of responsibility and the efficiency of the manufactured goods.

3. Continuous Improvement: DevOps community focuses on improving constantly to reduce waste. This constantly accelerates the development of delivered goods or services.

4. Automate everything: Automation is an essential part of the DevOps process.

5. Work as one team: The designer, developer, and tester are already established in the DevOps culture position. Everything they had to do is to work in full cooperation as one team.

6. Monitor and test everything: The rigorous monitoring and testing procedures are very critical for the DevOps team.

Who is a DevOps Engineer?

A DevOps Engineer is an IT specialist who works to manage code releases with software developers, device operators and other manufacturing IT staff. DevOps should have both hard and soft skills to interact and work with teams involved in the development, testing, and operations.

DevOps approach requires regular, incremental changes to the versions of code, which implies constant delivery and testing. While DevOps engineers may need to code from scratch on occasion, it is crucial that they have the fundamentals of languages for software development.

A DevOps engineer would work with team development personnel to resolve the coding and scripting needed to attach code components, such as libraries or software development kits.

Roles, Responsibilities, and Skills of a DevOps Engineer

The developers at DevOps work full time. We are responsible for creating and managing the infrastructure of a software application ongoing.

Here are some planned Roles, Responsibilities and Skills that DevOps engineer needs to follow:

• Capable of troubleshooting and problem-solving applications across platform and application domains.
• Effectively manage a project across free, standard-based platforms
• Increase the visibility of a project considering traceability
• Increase efficiency and partner to reduce production costs
• Analyze, design, and test scripts & systems for automation
• Ensuring critical system problem solving by using the best cloud security services
• DevOps engineer should have quick problem-solver and rapid-learner skills

How much does DevOps engineer make?

DevOps is one of the trendiest experts in IT. Therefore there are plenty of possibilities out there. As a result, the pay scale is quite high even for DevOps engineers of the junior level. In India, a Junior DevOps engineer’s average salary is 11, 15,801 per annum. In the United States of America, the average salary for junior DevOps Engineer is $78,696 a year.

DevOps Training Certification

DevOps certification preparation supports someone seeking to make a career as a DevOps Engineer. Amazon web services, Red Hat, Microsoft Education, DevOps Institute, provide certifications.

Let’s consider them one by one

AWS Certified DevOps Engineer

This DevOps Technology Certification tests you on how to build, deploy, and manage applications on AWS using the most common DevOps patterns. It also assesses you on the main DevOps practice concepts.

This credential has 2 criteria. The certification fee is $300 and is 170 minutes in duration.

Red Hat Certification:

• A Red Hat gives DevOps practitioners multiple levels of qualification as follows –
• Red Hat Certification for Platform-as-a-Service Expertise
• Red Hat Certification of Expertise to Build Containerized Applications
• Red Hat Certificate of Expertise in Ansible Automation
• Red Hat Certificate of Expertise in Configuration Management
• Red Hat Certificate of Expertise in Container Administration

DevOps Institute

The DevOps Institute is the global community of learning around new DevOps activities. The company sets the quality standard for the credentials based on DevOps competency. Currently, DevOps Institute offers three courses and certifications.

The certification course offered by the company are:

• DevOps Foundation
• DevOps Foundation Certified
• Certified Agile Service Manager
• Certified Agile Process Owner
• DevOps Test Engineering
• Continuous Delivery Architecture
• DevOps Leader
• DevSecOps Engineering

DevOps Automation Tools

Automating and configuring all the testing processes is key to achieving speed and agility. This process is known as Automation for DevOps.

The challenge faced by the large DevOps Team which maintains huge IT infrastructure can be briefly categorized into six different categories.

• Infrastructure Automation
• Configuration Management
• Deployment Automation
• Performance Management
• Log Management
• Monitoring.

Let’s see a few resources in each of these categories and how the pain points are solved–

Infrastructure Automation

Amazon Web Services (AWS): Being a cloud service you don’t need to be in the data center physically. They can also be easily scale-up on demand. Device costs are not upfront. This can be configured to automatically have more traffic powered servers.

Configuration Management

Chef: It is a valuable DevOps method for velocity, size, and consistency. It can be used to ease complex tasks and to manage settings. DevOps team can avoid making adjustments across ten thousand servers using this method. Alternatively, they will make changes at one location that is immediately mirrored in other servers.

Deployment Automation

Jenkins: This platform allows for continuous integration and checking. This helps to incorporate changes to the project more efficiently by identifying problems quickly as soon as a built-in one is implemented.

Log Management

Splunk: This is a tool that solves problems such as aggregating, storing and analyzing all logs in one location.

Performance Management

App Dynamic: It is a DevOps tool that provides real-time monitoring of the results. The data this tool collects helps developers diagnose when issues arise.

Monitoring

Nagios: Ensuring that people are alerted when infrastructure and related services go down is also critical. For this function, Nagios is one such tool that helps the DevOps teams find and fix problems.

What is the future of DevOps?

There are tons of Change likely to happen some of the most famous in the DevOps world are:

• Organizations transfer their needs to weeks and months, rather than years.
• Soon we’ll see that DevOps engineers have more end-user access and control than any other person in the business.
• DevOps is becoming a coveted capability for people with information technology.
• DevOps is here to stay and continuous delivery. Hence companies need to adjust because they have no choice but to evolve. However, it will take 5 to 10 years for DevOps to adopt the notion.

Summary

• DevOps is a philosophy that encourages cooperation between the Engineering and Operations Team to deliver code in an efficient and repeatable manner for output faster.
• Function in full isolation before DevOps service and Production team.
• Manual code deployment leads to human errors in production
• The operations team does not have any idea on the Development team’s success in the Old cycle. Thus, the operations team built an IT procurement and monitoring strategy for the facilities according to their understanding.
• Completely aware of developer development in the DevOps process management team. The preparation for purchasing and supervision is accurate.
• DevOps provides sustainability, predictability, cost efficiency of higher quality and market time.
• The agile cycle focuses on both functional and non-functional readiness while DevOps focuses on aspects of that IT infrastructure.
• To resolve the coding and scripting needs, DevOps engineer will collaborate with development team members.
• DevOps Certifications are available from the web services of Amazon, Red Hat, Microsoft Academy, and DevOps Institute
• DevOps helps companies shift their code-deployment periods to weeks and months rather than years.

Top 5 DevOps Testing Tools in 2020

DevOps provides a range of open-source tools and application frameworks. These systems are designed to help companies configure, integrate, and handle distribution needs. This lets them save time and the whole testing process is automated. Here’s a list of best DevOps testing tools, features, and links to access.

1) Ranorex

Ranorex Webtestit is a lightweight IDE designed for using Selenium or Protractor to create web UI tests. Eliminate flaccid, brittle checks and minimize maintenance with automated workflows and best practices built-in.

Key Features:

• Scaffolds your test framework
• Applies automatically best practices such as Site Object design
• Generates UI selectors and screenshots instantly using the Chrome DevTools Ranorex Selocity plugin
• Produces robust and enabling test suites
• Integrates with tools like Jira for monitoring faults, CI servers like VSTS and Jenkins and case management of TestRail testing.

2) HeadSpin

HeadSpin is the first Connected Intelligence PlatformTM in the world to provide Web, Mobile, IoT and 5G solutions that unify testing, tracking and analytics through applications, devices, and networks. HeadSpin empowers growth, QA, operations, and product teams to automate connected interactions and ensure a profitable digital company.

Features:

• Connection to 300 + apps on virtual app clouds in 30 countries
• Remote Debugging
• Real SIM-enabled Android and iOS devices
• 500+ parallel tests
• Regression Testing
• Automation
• Localization Testing

3) TestRail

TestRail is a web-based, portable, customizable case management test.

Features:

• Manage manual and automatic test cases, schedules, and runs effectively.
• Get real-time feedback with insightful dashboards, graphs, and activity reports to monitor progress.
• Boost mileage performance, personal to-do lists, and email notifications.
• Install on your own server or choose our solution based on the cloud / SaaS.
• Enterprise version designed for large teams & projects vital to the task.
• Integrate the CI / CD / DevOps pipeline with applications that include JIRA, Bugzilla, Jenkins, TFS and more.

4) Jenkins:

Jenkins is a DevOps research platform that is open source. This can be used to automate all forms of tasks such as program creation, testing, and deployment. This tool helps developers to easily identify and fix defects in their codebase in order to simplify their build testing.

Features:

• Provides support to scale up to a large number of nodes and the workload is distributed equally
• Compatible with all Linux, Mac OS or Windows OS and Variants
• It provides simple installation because Jenkins comes as a WAR file. All user needs to do is drop WAR into your JEE container and set it up ready for running.
• Jenkins can be set up and configured easily using its web interface
• This can quickly distribute the job through many machines

5) Jmeter:

Apache JMeter is a method for checking open-source loads. It is designed to measure Website efficiency. This tool for load testing can be used with the DevOps methodology.

Features:

• JMeter allows various types of servers to perform load and output tests.
• This tool for load testing stores its test plans in XML format allowing users to create the test plan using a text editor.
• The method can be used to perform program development and functional testing.

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