How To Crack Devops Interview

How To Turn Off The Auto

The auto-deployment feature is used for determining whether there are any new applications or changes in existing applications and dynamically deploy them.

It is enabled for servers that run in development mode.

To turn off the auto-deployment feature, follow one of the methods to place servers in production mode:

• In the Administration Console, click the name of the domain in the left pane and select the Production Mode checkbox in the right pane.
• At the command line, include the following argument when starting the domains Administration Server:

-Dweblogic.ProductionModeEnabled=true

• Production mode is set for all WebLogic Server instances in a given domain.

Q15 What Do You Mean By Recipe In Chef

For this answer, I will suggest you to use the above mentioned flow: first define Recipe. A Recipe is a collection of Resources that describes a particular configuration or policy. A Recipe describes everything that is required to configure part of a system. After the definition, explain the functions of Recipes by including the following points:

• Install and configure software components.
• Manage files.
• Execute other recipes.

What Are Active And Passive Checks In Nagios

Nagios is capable of monitoring hosts and services in two ways:

Actively

• Active checks are initiated as a result of the Nagios process
• Active checks are regularly scheduled

Passively

• Passive checks are initiated and performed through external applications/processes
• Passive checks results are submitted to Nagios for processing

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Top 120+ Devops Interview Questions And Answers For 2022

This blog features the most frequently asked DevOps interview questions and answers that you must prepare to ace your interview in 2022.

• Q1. What are the fundamental differences between DevOps & Agile?
• DevOps vs Agile
• Q2. What is the need for DevOps?
• Q3. How is DevOps different from Agile / SDLC?
• Q4. Which are the top DevOps tools? Which tools have you worked on?
• Q5. How do all these tools work together?
• Q6. What are the advantages of DevOps?
• Q7. Mention some of the core benefits of DevOps?
• Q8. What is the most important thing DevOps helps us achieve?
• Q9. Explain with a use case where DevOps can be used in industry/ real-life.
• Q10. 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.
• Q11. What are the anti-patterns of DevOps?

Q6 What Do You Mean By Passive Check In Nagios

According to me, the answer should start by explaining Passive checks. They are initiated and performed by external applications/processes and the Passive check results are submitted to Nagios for processing.Then explain the need for passive checks. They are useful for monitoring services that are Asynchronous in nature and cannot be monitored effectively by polling their status on a regularly scheduled basis. They can also be used for monitoring services that are Located behind a firewall and cannot be checked actively from the monitoring host.

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Q11 Explain How Flap Detection Works In Nagios

I will advise you to first explain Flapping first. Flapping occurs when a service or host changes state too frequently, this causes lot of problem and recovery notifications.Once you have defined Flapping, explain how Nagios detects Flapping. Whenever Nagios checks the status of a host or service, it will check to see if it has started or stopped flapping. Nagios follows the below given procedure to do that:

• Storing the results of the last 21 checks of the host or service analyzing the historical check results and determine where state changes/transitions occur
• Using the state transitions to determine a percent state change value for the host or service
• Comparing the percent state change value against low and high flapping thresholds

A host or service is determined to have started flapping when its percent state change first exceeds a high flapping threshold. A host or service is determined to have stopped flapping when its percent state goes below a low flapping threshold.

Devops Engineer Interview: Everything You Want To Know

In the past few years, companies have been placing increasing emphasis on the role of DevOps engineer, charged with continuous delivery.

In the past few years, companies have been placing increasing emphasis on the role of DevOps engineer. In this role, specialists are charged with ensuring continuous delivery and development of quality software and updates to existing technologies within the company. Plainly put, this role bridges several gaps across teams to ensure everyone is rowing in the same direction at the same speed.

• Questions to expect in a DevOps engineer interview
• Qualities of a successful DevOps candidate
• How to prepare for a DevOps engineer interview
• Questions you should ask in an interview

Tech skills are important and played a pivotal role in landing you an interview, but your soft skills are what will seal the deal. People need to know that you can work well with others and that you can communicate your field to someone who may not understand it well. Highlight your communication skills. In a remote environment, you need to show that you can take extra initiative to facilitate communication and make sure everyone is on the same page. Finally, showcase transferable skills that matter to the company youre interviewing with. This shows flexibility, versatility, and creativity. The less you need to be taught at a new job, the better.

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Advanced Aws Devops Interview Questions

Question # 25) How can you use CodeBuild to automate your release process?

Answer # Yes. CodeBuild is integrated with AWS CodePipeline. You can add a build action and set up a continuous integration and continuous delivery process that runs in the cloud.

Question # 26) What is a build project in AWS Devops?

Answer # A build project is used to define how CodeBuild will run a build. It includes information such as where to get the source code, which build environment to use, the build commands to run, and where to store the build output. A build environment is the combination of operating system, programming language runtime, and tools used by CodeBuild to run a build.

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Question # 27) How do you configure a build project in AWS Devops?

Answer # A build project can be configured through the console or the AWS CLI. You specify the source repository location, the runtime environment, the build commands, the IAM role assumed by the container, and the compute class required to run the build. Optionally, you can specify build commands in a buildspec.yml file.

Question # 28) Which source repositories does CodeBuild support in AWS Devops?

Answer # CodeBuild can connect to AWS CodeCommit, S3, and GitHub to pull source code for builds.

Question # 29) Which programming frameworks does CodeBuild support in AWS Devops?

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Question # 30) What happens when a build is run in CodeBuild in AWS Devops?

What Can Be A Preparatory Approach For Developing A Project Using The Devops Methodology

The project can be developed by following the below stages by making use of DevOps:

• Stage 1: Plan: Plan and come up with a roadmap for implementation by performing a thorough assessment of the already existing processes to identify the areas of improvement and the blindspots.
• Stage 2: PoC: Come up with a proof of concept just to get an idea regarding the complexities involved. Once the PoC is approved, the actual implementation work of the project would start.
• Stage 3: Follow DevOps: Once the project is ready for implementation, actual DevOps culture could be followed by making use of its phases like version control, continuous integration, continuous testing, continuous deployment, continuous delivery, and continuous monitoring.

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When Should I Use ”

Always use } for variables, unless you have a conditional statement, such as “when: “. This is because conditional statements are run through Jinja, which resolves the expressions.

For example:

echo This prints the value of }

when : foo is defined

Using brackets makes it simpler to distinguish between strings and undefined variables.

This also ensures that Ansible doesn’t recognize the line as a dictionary declaration.

What Is Configuration Management

Configuration management is basically a practice of systematic handling of the changes in such a way that system does not lose its integrity over a period of time. This involves certain policies, techniques, procedures, and tools for evaluating change proposals, managing them, and tracking their progress along with maintaining appropriate documentation for the same.

CM helps in providing administrative and technical directions to the design and development of the appreciation.

The following diagram gives a brief idea about what CM is all about:

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General Advice About Deployment Questions

Hereâs a general tipâyour interview could take longer if you share real stories about how youâve been able to improve a deployment pipeline at other companies.

Lastly, here are some book recommendations I have, in case you want to do a deep dive into the subject of deployments:

• Continuous Delivery by Jez Humble and David Farley
• Effective DevOps

Q9 What Is The Blue/green Deployment Pattern

This is a continuous deployment strategy that is generally used to decrease downtime. This is used for transferring the traffic from one instance to another.

For Example, let us take a situation where we want to include a new version of code. Now we have to replace the old version with a new version of code. The old version is considered to be in a blue environment and the new version is considered as a green environment. we had made some changes to the existing old version which transformed into a new version with minimum changes. Now to run the new version of the instance we need to transfer the traffic from the old instance to the new instance. That means we need to transfer the traffic from the blue environment to the green environment. The new version will be running on the green instance. Gradually the traffic is transferred to the green instance. The blue instance will be kept on idle and used for the rollback.

In Blue-Green deployment, the application is not deployed in the same environment. Instead, a new server or environment is created where the new version of the application is deployed.

Once the new version of the application is deployed in a separate environment, the traffic to the old version of the application is redirected to the new version of the application.

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Q11what Is Puppet Module And How It Is Different From Puppet Manifest

For this answer, you can go with the below mentioned explanation: A Puppet Module is a collection of Manifests and data , and they have a specific directory structure. Modules are useful for organizing your Puppet code, because they allow you to split your code into multiple Manifests. It is considered best practice to use Modules to organize almost all of your Puppet Manifests.Puppet programs are called Manifests which are composed of Puppet code and their file names use the .pp extension.

Q1 What Is Version Control

This is probably the easiest question you will face in the interview. My suggestion is to first give a definition of Version control. It is a system that records changes to a file or set of files over time so that you can recall specific versions later. Version control systems consist of a central shared repository where teammates can commit changes to a file or set of file. Then you can mention the uses of version control.

Version control allows you to:

• Revert files back to a previous state.
• Revert the entire project back to a previous state.
• Compare changes over time.
• See who last modified something that might be causing a problem.
• Who introduced an issue and when.

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Join Iks Devops Engineering Interview Course

If you need help with your prep, consider joining Interview Kickstartâs DevOps Engineering Interview Course â the first-of-its-kind, domain-specific tech interview prep program designed specifically for SREs and DevOps Engineers. to learn more about the program.

IK is the gold standard in tech interview prep. Our programs include a comprehensive curriculum, unmatched teaching methods, FAANG+ instructors, and career coaching to help you nail your next tech interview.

To learn more, register for our FREE webinar.

What Do You Mean By Automation Testing

Automation Testing or Test Automation is a software testing technique. It is used to automate the testing tasks and repetitive tasks that are difficult to perform manually. It involves the use of separate testing tools which lets you create test scripts to test and compare the actual and expected outcomes.

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Not All Interviews Are The Same

Of course, there are other topics and questions you might encounter, but these are the most common ones. Interview questions will vary depending on the company to which youâre applying. Consider the size of the company, the technology stack, the culture, and the industry. Youâll always have a chance to find out about these things before the technical interview, so do your homework and be prepared. And remember, not all interviews are the same for everyoneâeven for the same position in the same company.

As long as you have the DevOps mindset to create a collaborative environment by getting rid of silos or barriers, youâll be OK. But you need to prove you have that mindset, and prove it technically. Technology will always change, and knowledge becomes obsolete, but you need to show that you learn fast and keep current.

Raygun is hiring. Check out our careers page to see the current vacancies.

I wish you success!

Career Path For A Devops Engineer

The career paths of DevOps engineers are usually not clearly defined. This is because the role of a DevOps engineer has evolved over the years and is still transforming. DevOps engineers often come from a variety of backgrounds and may have started their DevOps role at different points in their careers.

However, in a FAANG+ company, the DevOps engineer career progression would look something like this:

DevOps Engineer I â DevOps Engineer II â Senior DevOps Engineer â Staff DevOps Engineer â Senior Staff DevOps Engineer â Principal DevOps Engineer

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Top 50 Devops Interview Questions You Must Learn In 2021

DevOps Interview Questions and Answers Real-time Case Study Questions Frequently Asked Curated by Experts Download Sample Resumes.

Branching is a technique employed for code isolation. In simple terms, it makes a copy of the source code to create two versions that are developed separately. There are various types of branching available. Therefore, the DevOps team must make a choice depending on application requirements. This choice is called a branching strategy.

• 1. What is DevOps?
• 12. What is VCS?

Q6 What Is Docker Hub

Answer to this question is pretty direct. Docker hub is a cloud-based registry service which allows you to link to code repositories, build your images and test them, stores manually pushed images, and links to Docker cloud so you can deploy images to your hosts. It provides a centralized resource for container image discovery, distribution and change management, user and team collaboration, and workflow automation throughout the development pipeline.

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Q4 How To Automate Testing In Devops Lifecycle

I have mentioned a generic flow below which you can refer to:In DevOps, developers are required to commit all the changes made in the source code to a shared repository. Continuous Integration tools like Jenkins will pull the code from this shared repository every time a change is made in the code and deploy it for Continuous Testing that is done by tools like Selenium as shown in the below diagram.In this way, any change in the code is continuously tested unlike the traditional approach.

What Is The Difference Between Continuous Delivery And Continuous Deployment

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What Concepts Are Key Aspects Of The Jenkins Pipeline

• Pipeline: User-defined model of a CD pipeline. The pipeline’s code defines the entire build process, which includes building, testing and delivering an application
• Node: A machine that is part of the Jenkins environment and capable of executing a pipeline
• Step: A single task that tells Jenkins what to do at a particular point in time
• Stage: Defines a conceptually distinct subset of tasks performed through the entire pipeline

How Puppet Module Is Different From Puppet Manifests

Puppet Module is a bundle of manifests and data. They have a specific directory structure that allows Puppet to automatically load classes, facts, custom types, defined types, and tasks. Modules must have a valid name and are installed in Puppets module path.

Puppet Manifests are nothing but Puppet programs that are composed of Puppet code. It uses.PP extension.

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Top Aws Devops Interview Questions With Detailed Answers

The boom of DevOps has not only created a number of opportunities for DevOps professionals but also a broad competition at the same time. If you are preparing for an interview for the development and operations role, you need to be prepared well to overcome the challenge of the industry. Lets get ahead and go through the most common AWS DevOps interview questions.