What is DevOps?
DevOps is the combination of cultural philosophies, practices, and tools that increases an organization’s ability to deliver applications and services at high velocity: evolving and improving products at a faster pace than organizations using traditional software development and infrastructure management processes. This speed enables organizations to better serve their customers and compete more effectively in the market.
Benefits of DevOps:
1.Speed
Move at high velocity so you can innovate for customers faster, adapt to changing markets better, and grow more efficient at driving business results. The DevOps model enables your developers and operations teams to achieve these results.
2.Rapid Delivery
Increase the frequency and pace of releases so you can innovate and improve your product faster. The quicker you can release new features and fix bugs, the faster you can respond to your customers’ needs and build competitive advantage.
3.Reliability
Ensure the quality of application updates and infrastructure changes so you can reliably deliver at a more rapid pace while maintaining a positive experience for end users. Use practices like?CI?and?CD?to test that each change is functional and safe.?
4.Scale
Operate and manage your infrastructure and development processes at scale. Automation and consistency help you manage complex or changing systems efficiently and with reduced risk. For example,?infrastructure as code?helps you manage your development, testing, and production environments in a repeatable and more efficient manner.
5.Improved Collaboration
Build more effective teams under a DevOps cultural model, which emphasizes values such as ownership and accountability. Developers and operations teams?collaborate?closely, share many responsibilities, and combine their workflows. This reduces inefficiencies and saves time
6.Security
Move quickly while retaining control and preserving compliance. You can adopt a DevOps model without sacrificing security by using automated compliance policies, fine-grained controls, and configuration management techniques.
DevOps Practices
The following are DevOps best practices:?
Continuous Integration:
Continuous integration is a software development practice where developers regularly merge their code changes into a central repository, after which automated builds and tests are run. The key goals of continuous integration are to find and address bugs quicker, improve software quality, and reduce the time it takes to validate and release new software updates.
Continuous Delivery:
Continuous delivery is a software development practice where code changes are automatically built, tested, and prepared for a release to production. It expands upon continuous integration by deploying all code changes to a testing environment and/or a production environment after the build stage. When continuous delivery is implemented properly, developers will always have a deployment-ready build artifact that has passed through a standardized test process.
Continuous Monitoring:
IT organizations today are facing the unprecedented challenge of securing and optimizing cloud-based IT infrastructure and environments that seem to grow in complexity year after year. With a growing number of applications deployed across increasingly disparate cloud environments, IT security and operations analysts must collaborate effectively and deploy the best available IT security software solutions to minimize security breaches while maintaining compliance with data security and privacy requirements and legislation.
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DevOps Popular Tools :
Source Code Control:
1) Git (GitLab, GitHub, Bitbucket)
GitHub is often thought of as the best place for developers to share open-source projects and collaborate around shared repositories. While GitLab and Bitbucket are purpose-built for the enterprise, helping engineers across disciplines deploy, test, release and ship code faster and more reliably. The main difference between Git and other version control systems is the way it tracks your filesystems, recording any changes made to the system at a given time. Git is crucial for alignment between all development and IT teams, leading to more visibility into development pipelines and more communication across engineering teams.
DevOps CI/CD and configuration management tools:
2) Ansible
Ansible?allows DevOps and IT teams to automate setups, updates, restarts and other maintenance regarding application and infrastructure components. This eliminates a lot of human error and saves a lot of time spent manually configuring systems and CI/CD pipelines. Ansible’s configuration management and IT orchestration can connect to hundreds of other integral tools in your CI/CD pipeline, leading to faster development and more resilient applications and services.
3) Jenkins
While Ansible focuses a lot on automation and ease of use for configuration management,?Jenkins?is highly focused on the CI/CD pipeline and building out robust deployment automation. Both Ansible and Jenkins are open-source automation servers and can be used for reliable CI/CD pipelines, app deployments and configuration management – but a large number of teams look at Jenkins as the gold standard for CI. Depending on your toolchain, architecture and team structure, you could find yourself needing to use both tools for different reasons.
4) Chef
Chef?uses an?imperative language?for configuration management. This allows for greater customization and essentially gives DevOps and IT teams the ability to program every aspect of their nodes. However, the ability to customize too much can lead to highly-complex, unnecessary procedures and tech debt. Chef is a more friendly configuration management and?CI/CD tool for developers?but can often be hard to handle for more traditional IT operations teams.
5) Puppet
Puppet?uses a?declarative language?that is more like a description of an asset’s state but doesn’t allow developers or sysadmins with a way to intervene with how they can achieve a certain state. This constraint can limit customizability but often offers more benefits toward reliability. The limitations force DevOps and IT teams to design ideal configurations and lay them out within constraints, reducing the amount of control you have, but often leading to simpler configurations and greater reliability.
Container Platforms:
6) Kubernetes and Docker
It’s important to first mention that containers aren’t right for everyone. But, in DevOps in 2020, you can’t ignore the growth in the use and implementation of container platforms and microservices. Whether you choose?Kubernetes or Docker Swarm?as your container orchestration tool, your choice is dependent on your architecture and the goals you’re trying to achieve by containerizing applications or services. Breaking large applications and products into microservices running on containers can greatly benefit development speed as well as reliability through limited blast radiuses. But, neither Kubernetes nor Docker Swarm can prevent you from poorly-architected services – that starts with your team.
Cloud computing and storage:
7) AWS, Azure and GCP
DevOps-minded teams don’t need to choose just one cloud provider, or even go with a public cloud option. However, public cloud options allow for greater flexibility and agility which is often highly-beneficial for successful businesses. Whether you make use of a single cloud provider or leverage a multi-cloud or?hybrid cloud?strategy is highly dependent on the types of applications or services you’re working with. Amazon Web Services (AWS), Microsoft?Azure, and Google Cloud Platform (GCP) each offer highly-effective cloud computing, storage and hosting functionality.
Depending on what you’re working on, each of them will offer different costs and benefits around scalability, portability, agility, etc. When assessing which cloud provider you need, look at the most important aspects and components of your applications and infrastructure and determine which one makes the most sense.