What is DevOps?
DevOps is Development and Operation’s Collaboration, it’s a Union of 3Ps - Process, People and Product (working Product) that enable continuous integration and continuous delivery of value to our end users. DevOps accelerate the process to deliver applications and software services at high speed and high velocity. So that organization can learn and adopt to the market at its earliest. Also, it minimizing the risk factor by continuously delivering and getting end users and stakeholders feedback at the early stages.
What is the need for DevOps?
In Traditional software development, after completing the development part, the code deployment time was huge. And many times, we heard the common fights between the Development Team and Operations Team or deployment team that it works fine on our system, it's the sever causing problem and operation team defenses it's not your server it's your code, Right? Well, DevOps solves the Traditional Dev and Ops fights by breaking the wall of confusion.
How DevOps Works?
DevOps is the practice of operations and development engineers that work together in the entire project lifecycle, from the design and development process to production releases and support.
Starting from design and development to testing automation and from continuous integration to continuous delivery, the team works together to achieve the desired goal. People having both development and operations skill sets working together and use various tools for CI-CD and Monitoring to respond quickly to customer's need and fix issues and bugs.
What are the benefits of DevOps?
The main benefits of implementing DevOps are:
More engaged and Collaborative Development and Operation teams.
DevOps Deploy code faster in the market through Continuous Integration and Continuous Delivery.
Faster Operational Support.
Strong Infrastructure Performance and IT performance.
Less failures and continuous improvement.
Transparency between the team.
Constant Monitoring and better adaption.
What are the DevOps tools?
To Implement DevOps, Automation plays a major role and we defiantly need some tools for Implementation. Following are the major areas:
Build and Testing
Deploy and Monitor
Here's a list of tools that can help you meet your DevOps requirement perfectly.
Which tools are useful for Continuous Integration?
Azure Pipelines has support for all the platform like Linux, macOS, and Windows also we can consider following tools for the Continuous Integration.
Which tools are useful for Continuous Deployment?
Following are few useful Continuous Deployment tools
Azure Pipelines for Deployment.
What is InfrastructureConfiguration Which tools are useful for InfrastructureConfiguration?
In today’s fast and competitive market, many companies demand a faster deployment process and Infrastructure Configuration, so treating Infrastructure as software and manage the processes such as version control, continuous integration, deployment and automated testing will make infrastructure changes more rapidly and reliably.
Following are the most popular tools for Infrastructure Configuration.
What is Continuous Testing? What is the use of Test Automation in DevOps?
DevOps is not about jobs or tools, it’s about people, culture and automation. and to implement DevOps, continuous testing plays a very important role where writing scripts for software testing and make it auto executable so that we can automate the testing and do the frequent releases using the delivery pipelines.
We have to write unit testing to achieve Continuous Testing.
Which tools are useful for Continuous Testing?
For test Automation there are many open source tools are available, following are few names
What is Continuous Monitoring?
DevOps and Agile are all about inspection and adaption to make continuous improvement in our process, and for that, we must have to monitor continuously the process, application performance and infrastructures.
By doing continuous infatuates monitoring, we can visualize the process and get the early alerts in real time. By analyzing that data, we can take decision wisely and adapt the things and process that best suits for the business.
Which tools are useful for Continuous Monitoring?
For continuous monitoring Nagios, SysDig and Zabbix are the famous open source tools available in the market. Infrastructure as code(laC) vendors like Amazon and Google have tools like AWS CloudWatch and StackDriver. Also, New Relic is a good option for continuous monitoring.
What is the container and What containers Azure DevOps support?
The container will provide a way to package your software code, its configurations, Packages and its dependencies into a single unit or object.
We can have multiple containers that can run on the same machine and share the operating system with other containers so that we can run anywhere fast and reliable and consistent deployments.
Azure DevOps has the following container support.
Asp.Net with containers.
Azure Kubernetes services.
Azure Service Fabric application with Docker support.
What is Azure DevOps? What is the difference between Azure DevOps and VSTS Online?
Microsoft Visual Studio Team Services, now known as Azure DevOps having excellent application lifecycle management tool.
We can plan a project with Agile tools and templates, manage and run test plans, Version control source code and manage the branches, deploy the solution across all platform using Azure Pipelines, by implementing Continuous Instigation and Continuous Deployment.
What services Azure DevOps Provides?
Azure DevOps provides full application lifecycle management from planning to coding, and from testing to build and deploy.
What is Azure Boards?
Azure board provides service to manage your works, using the Agile Scrum and Kanban templates, Dashboard that we can customize and reporting.
What are Azure Repos?
Azure Repos is a code version control system that can manage your code and its version.
Using that we can track the changes, whenever team edits code it has all the version history so later, we can coordinate with the team and merge the changes.
The azure repo has both a centralized version control system as well as a distributed version control system.
Git: Distributed Version Control System
Team FoundationVersion Control (TFVC): Centralized Version Control System.
What are Azure Pipelines?
Azure Pipelines has all the features that are required for supporting Continuous Integration (CI) and Continuous Deployment (CD).
Using that we can constantly test and build the code and release it to any target.
What are Azure Test Plans?
Azure test plan provides browser-based test management using that we can manage all the testing like Exploratory & manual testing, Continuous testing, Unit & functional testing also we can ask or Request stakeholder to provide feedback.
What is the significance of having configuration management in DevOps?
Configuration management (CM) assists the team to streamline various tasks and accomplish them in less time. In this way, it enhances the organization’s agility and performance. Also, it assists in providing consistency and enhancing the product development process by implementing means of design streamlining, control, extensive documentation, and change implementation during different phases of the project. You can be aware of configuration management when you go through the devops tutorial.
Describe the flow of the DevOps pipeline?
Generally, a pipeline is a set of automated processes that are defined and being followed by the software engineering team. Essentially, DevOps pipeline permits the DevOps software developers and DevOps engineers to competently and consistently compile, create and deploy the software code into production environments. .
The corresponding flow is as below:
- Developer focus on accomplishing functionality.
- The developer sets up his code for the test environment.
- Testers work on authenticating the feature. The business team can arbitrate and give feedback.
- Developers focus on the test as well as business feedback in a constant collaboration manner.
- The code is finally handed over the production and authenticated again
What are the key differences between DevOps and Agile?
When preparing for DevOps interviw Questions answer, this is one of the most typical questions a candidate needs to be aware of. There are several similarities between DevOps and Agile methodology. But when it comes to software development, both are fundamentally unique approaches. Here are the differences between the two:
- Agile prioritizes timeliness but DevOps provides identical priority to quality and timeliness.
- DevOps presents smaller release cycles with instant feedback whereas Agile presents only smaller release cycles without instant feedback.
- Agile depends on feedback from customers whereas DevOps depends on feedback from its monitoring tools.
- The scope of work is agility only for Agile whereas it is agility and need for automation for DevOps.
How does AWS help DevOps?
AWS (Amazon Web Services) is a popular cloud provider. It assists DevOps by offering the following benefits:.
- Scaling: Plenty of machines can be set up on AWS by using computation power and unlimited storage.
- AWS presents ready-to-use flexible resources.
- With various services presented by AWS, a myriad of tasks can be automated.
- AWS is safe to implement and through its diverse security options offered under the Identity and Access Management (IAM), certainly, the application deployments and builds can be safeguarded.
Briefly explain various phases in DevOps:
AWS (Amazon Web Services) is a popular cloud provider. It assists DevOps by offering the following benefits:.
When you undergo devops training, you can get familiar with different phases in DevOps. The different phases available in the DevOps lifecycle are as below:
Plan: Firstly, there must be a plan for the type of application required to be developed. It is always a decent idea to get a rough picture of the development process.
Code: The application is coded according to the end-user requirements.
Build: It involves building the application by assimilating different codes created in the previous steps.
Test: Recognized as the most vital step of the application development, it involves testing the application and rebuilding, if necessary.
Integrate: Several codes from different programmers are combined into one.
Deploy: The code is deployed in a cloud environment for future usage. Any new modifications do not influence the overall functioning of a high-traffic website.
Operate: Operations are carried out on the code if needed.
Monitor: The performance of the application is monitored. Modifications are done to fulfill the end-user requirements.
What are the antipatterns of DevOps?
A pattern is the one that is most frequently followed by huge masses of entities. When a pattern is accepted by an organization by considering that it is being used by others without determining the requirements of the organization then it turns out to be an anti-pattern. Likewise, various myths around DevOps can lead to antipatterns, they are as below:
- DevOps is not a culture but a process.
- DevOps is nothing but an Agile approach.
- There must be a distinct DevOps group.
- DevOps resolves every problem.
- DevOps associates to developers operating a production environment.
- DevOps follows Development-driven management
- DevOps does not excessively focus on development.
- DevOps culture cannot be implemented because of the absence of the right set of people.
What are a few of the finest practices that must be followed for DevOps success?
Though you Learn DevOps Step by Step, it is important that you know which practices to follow for success in DevOps implementation.
Listed below are the important best practices necessary to be followed for DevOps implementation:
- The speed of delivery implies the time taken for a task to continue into the production environment.
- It is crucial to calculate the definite or the average time that it needs to recover in case any failure occurs in the production environment.
- The number of bugs being mentioned by the customer also influences the overall quality of the application.
What is the DevOps toolchain?
DevOps toolchain is formed by a stack of tools. It automates some tasks like the development and deployment of your application. Tasks in DevOps can be carried out manually with easy steps, but the requirement for automation rapidly increases due to the rise in its complexity. Therefore, toolchain automation is important for continuous delivery. Basically, GitHub a Version Control Repository is recognized as the core component of a DevOps toolchain. In this toolchain, some other tools can be delivery pipelines, backlog tracking, etc. When you enroll in the Devops course in Hyderabad, you gradually become aware of various tools and toolchains in DevOps.
What does it mean by a branching strategy in DevOps?
Branching is a method implemented for code isolation. It creates a copy of the source code to make two versions that are separately developed. Various kinds of branching are available. Thus, the DevOps team should make a choice based on application requirements. Correspondingly, the choice is referred to as a branching strategy.
What is a Puppet?
Puppet is famously known as an open-source configuration management tool being utilized for the deployment, configuration, and management of servers. Essentially, its working is based on client-server architecture. In this architecture, the client is an agent whereas the server is recognized as the master. It is found that a puppet agent and master converse via a safely encrypted channel with the assistance of SSL.
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