What Is DevOps?

DevOps is an approach to working that emphasizes the quick, incremental, and continuous delivery of products.

The term DevOps combines the words "development" and "operations." In practice, it's a union between the development and operations teams. DevOps is often thought of as a process, a culture, or a set of principles that enables organizations to deliver products quickly and continuously

DevOps is typically cross-functional (people from different IT-related business units) and uses different software tools. These tools usually fit into one or more of the following categories:

• Plan. This phase helps define business value and requirements. Sample tools include Jira or Git to help track known issues and perform project management.

• Code. This phase involves software design and the creation of software code. Sample tools include GitHub, GitLab, Bitbucket, or Stash.

• Build. In this phase, you manage software builds and versions and use automated tools to help compile and package code for future releases to production. You use source code repositories or package repositories that also “package” infrastructure needed for product release. Sample tools include Docker, Ansible, Puppet, Chef, Gradle, Maven, or JFrog Artifactory.

• Test. This phase involves continuous testing (manual or automated) to ensure optimal code quality. Sample tools include JUnit, Codeception, Selenium, Vagrant, TestNG, or BlazeMeter.

• Deploy. This phase can include tools that help manage, coordinate, schedule, and automate product releases into production. Sample tools include Puppet, Chef, Ansible, Jenkins, Kubernetes, OpenShift, OpenStack, Docker, or Jira.

• Operate. This phase manages software during production. Sample tools include Ansible, Puppet, PowerShell, Chef, Salt, or Otter.

• Monitor. This phase involves identifying and collecting information about issues from a specific software release in production. Sample tools include New Relic, Datadog, Grafana, Wireshark, Splunk, Nagios, and Slack.

There are 6 primary goals of DevOps:

1. Increase the speed of development and release processes

2. Make builds more reliable

3. Shorter turnaround for new features and bug fixes

4. Greater Scalability of applications and infrastructure

5. Increased security by automating compliance practices

6. Improved collaboration throughout the development lifecycle

DevOps tools:

While DevOps is considered a mindset first, there are several DevOps tools used to automate various stages in a DevOps process. Here are a few.

• Git: Git is a version control system. In DevOps, it’s used to keep track of code and is useful for team members to collaborate on projects and update existing ones.

• Docker: Docker is used for containerizing applications—the process of turning an application into a single package of software.

• Jenkins: Jenkins is a tool used to build CI/CD pipelines, where developers can build, test, and deploy software.

• Kubernetes: A container organizer, Kubernetes is used frequently in DevOps.

Benefits of DevOps:

DevOps proponents describe several business and technical benefits, many of which can result in happier customers. Some benefits of DevOps include:

• Faster, better product delivery

• Faster issue resolution and reduced complexity

• Greater scalability and availability

• More stable operating environments

• Better resource utilization

• Greater automation

• Greater visibility into system outcomes

• Greater innovation

Disadvantages of Devops:

• DevOps professionals or expert developers are less available.

• Developing with DevOps is so expensive.

• Adopting new DevOps technology into industries is hard to manage in a short time.

• A lack of DevOps knowledge can be a problem in the continuous integration of automation projects.

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