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DevOps is high in demand now- days and without writing any overstated details about the technology. Here are Top 15 DevOps Interview Questions and answers and you should prepare for the year 2018. These questions and answers are framed by industry experts from Multisoft systems who train for DevOps Training to give you an idea of questions which may be asked in interview.
- What is the need for DevOps?
DevOps is the association of programmer and IT operation team. It is a platform that recognizes the connection between several tools, concepts, themes of software development, etc. It has become a source for almost all the things in software industries like development, security, operations, testing and deployment. It improves the delivery of IT service on the basis of:
- How is DevOps different from Agile / SDLC?
DevOps: DevOps is a set of practices that help in clear communication and seamless collaboration among the development and operations team while presetting the process of software delivery. DevOps is highly practiced for rapid roll out software updates regularly.
Agile: Agile is an iterative approach to application lifecycle management. As a substitute of managing all the planning upfront, it focuses on being lean and creating minimum viable products by setting-up time periods.
Conclusion: DevOps is a concept that we use to handle end-to-end engineering process while Agile is a process used for the development of complex projects.
- What are the major Open Source DevOps Tools?
The major open source DevOps tools are:
- Selenium: Continuous Testing tool
- Git: Version Control System tool
- Jenkins: Continuous Integration tool
- Puppet, Ansible, Chef: Configuration Management and Deployment tools
- Nagios: Continuous Monitoring tool
- Docker: Containerization tool
- What is DevOps Toolchain?
DevOps Toolchain is a combination of tools that helps in development, deployment and management of Apps throughout the development lifecycle as organized by the organization that uses DevOps.
- What are the benefits of DevOps?
DevOps offers the following benefits:
- Regular software delivery
- Easy to fix
- Quick resolution
- Rapid delivery of features
- More time available to add value
- More stable operating environments
- What is the most important thing DevOps helps us achieve?
The most important thing that DevOps helps us achieve is that it brings a change in the production as quickly as possible without compromising quality of the software. Moreover, it reduces the risk related the development of the software. There are several other positive impacts of DevOps. For example clearer communication and better working relationships between teams.
- Explain with a use case where DevOps can be used in industry/ real-life.
There are several industries that are using DevOps. You can also refer the below example:
Etsy is a commerce website focused on vintage items and supplies, as well as unique factory-manufactured items. Etsy thrashed with slow, painful site updates that normally caused the site to go down. It affected sales for millions of Etsy’s users who sold goods through online market place and risked driving them to the competitor.
- Explain your understanding and expertise on both the software development side and the technical operations side of an organization you have worked with in the past.
DevOps engineers always work in a 24/7 business online environment. I was flexible to on-call duties and was always available to take up real-time, live-system responsibility. I successfully automated processes to assist constant software deployments. I have experience with public/private clouds, tools like Chef or Puppet, scripting and automation with tools like Python and PHP, and a background in Agile.
- What are the anti-patterns of DevOps?
A pattern is a standard usage that is generally followed in an organization. If a pattern is implemented by others does not perform well and you still follow it blindly, that infers you are adopting an anti-pattern. Some of the myths about DevOps:
- DevOps is a process
- DevOps will solve all our problems
- We need a separate DevOps group
- DevOps is Development-driven release management
- DevOps means Developers Managing Production
- DevOps is not development driven.
- DevOps is not IT Operations driven.
- What DevOp tools have you worked with?
The tools we have worked with are:
- Nagios (& Icinga)
- How DevOps is helpful to developers?
DevOps helps developers in following ways:
- It helps in fixing the bug and implement new features quickly.
- It provides a clear communication among team members.
- Discuss your experience building bridges between IT Ops, QA and development.
DevOps is a concept that is all about seamless communication and collaboration. I’ve been comfortable to work on production issues from the development and operations sides, successfully straddling the two worlds.
- What was the most difficult architecture project you have handled and is out of confidentiality bounds?
This is one of those DevOps Questions that enable you to test the problem explanation. The students should include the following in the answer:
- Complete architecture of the system
- Tests for potential failures
- Potential failure points of the system
- Scaling factors of the system
- What platforms does Docker run on?
Docker runs on following platforms:
- Specific instructions are available for most Linux distributions, including Ubuntu, RHEL, SuSE, and many others.
- Any distribution running version 3.10+ of the Linux kernel
- Windows Server 2016
- Windows 10
- Amazon EC2
- Microsoft Azure
- Google Compute Engine
- What’s your career objective in your role as a DevOps engineer?
In a way to get on the top, it is important that you define yourself. Coders with DevOps skills are commonly ask to communicate with an operations team, so make your writing skills better through prominently on your resume. My passion is to overcome with all the trouble and improve the process, so that the development and operation teams perform well. It is an opportunity to get involved in the entire system from beginning to the end.