Trang chủ 14 Essential DevOps Interview Questions and Answers

14 Essential DevOps Interview Questions and Answers

Used to show differences between the two mentioned branches/differences made in the files in the staging area vs current version. The git bisect command is used in finding the bug performing a commit in the project by using a binary search algorithm. Now you can merge the how to become a devops engineer branches on the command line, or push your changes to your remote repository on GitHub and merge your changes in a pull request. For example, this may occur when people make different changes to the same line of the same file on different branches in your Git repository.

devops engineer interview questions

This prevents concerns like quality issues and releases delays that might occur whenever big-bang testing is delayed until the end of the cycle. In this way, Continuous Testing allows for high-quality and more frequent releases. Every time a change is made in the code, Jenkins-like Continuous Integration tools will grab it from this common repository and deploy it for Continuous Testing, which is done by tools like Selenium. DevOps engineers need to be proficient in technical and interpersonal skills, teamwork, and problem-solving techniques. In addition, they must be able to interact and collaborate successfully with coworkers from all backgrounds and disciplines since they work closely with several teams within the business. I also helped design a rollback strategy for quick recovery in case of failure during the transition.

Q6. Explain some basic Git commands?

Efficiency – The efficiency of docker is higher, which is an advantage over virtual machines. Portability – Docker doesn’t have the same cross-platform compatibility issues with porting as virtual machines do. Space Allocation – Data volumes can be shared and used repeatedly across multiple containers in Docker, unlike virtual machines that cannot share data volumes. DevOps can positively affect business culture by encouraging team collaboration, enhancing communication, and promoting a culture of continuous learning and improvement. This cultural change can result in delivering software products and services that are quicker and more effective, with greater customer satisfaction. Adopting DevOps practices enables organizations to develop a culture that values adaptability, creativity, and teamwork, ultimately improving business results.

This script checks to see if any .go file that is about to be committed needs to be passed through the standard Go source code formatting tool gofmt. By exiting with a non-zero status, the script effectively prevents the commit from being applied to the repository. KPI Means Key Performance Indicators are used to measure the performance of a DevOps team, identify mistakes and rectify them. This helps the DevOps team to increase productivity and which directly impacts revenue. If you have attended DevOps interviews or have any additional questions you would like answered, please do mention them in our Q&A Forum.

Q15. What platforms does Docker run on?

We used blue-green deployment methodology which ensured zero-downtime during the entire process. Infrastructure as Code (IaC) tools like Terraform or Ansible further promote consistency by automating the provisioning and management of infrastructure. Participating in online communities such as GitHub also helps me keep up-to-date. It’s a great platform for learning about new tools and techniques, as well as for sharing knowledge and getting feedback from peers.

  • Utilize tools such as Terraform or Ansible to orchestrate and automate the provisioning of infrastructure components.
  • A multi-stage Dockerfile allows multiple build stages within a single Dockerfile.
  • Grafana is a popular open-source data visualization and monitoring tool used to create interactive dashboards and visualizations for analyzing data.
  • Begin by establishing clear incident response processes, defining roles, and ensuring seamless communication among cross-functional teams.

Before talking about the growing popularity of DevOps, discuss the current industry scenario. Begin with some examples of how big players such as Netflix and Facebook are investing in DevOps to automate and accelerate application deployment and how this has helped them grow their business. Using Facebook as an example, you would point to Facebook’s continuous deployment and code ownership models and how these have helped it scale up but ensure the quality of experience at the same time. Hundreds of lines of code are implemented without affecting quality, stability, and security. Start by talking about the age-old mechanisms of writing commands onto script files and testing them in a separate environment before deployment and how this approach is being replaced by IaC. This enables easier development and faster deployment of infrastructure changes.

How can Docker containers be shared with different nodes?

It is a key DevOps practice and is used in conjunction with continuous delivery. IaC takes proven coding techniques and extends them to infrastructure details, where team members can write, test, and maintain infrastructure codification in a version control system. Continuous testing is a critical component of DevOps that involves testing early and often throughout the software development process. It provides continuous feedback to developers, ensuring that code changes are tested thoroughly and defects are detected early. Continuous testing helps improve software quality, reduce costs and time-to-market, and increase customer satisfaction. Implementing continuous integration and continuous deployment (CI/CD) practices ensures database changes align with the application code changes.

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