EPAM Systems Lead DevOps Engineer Interview Questions and Answers

Q1. Explain CI/CD pipeline .
Ans. 
CI/CD pipeline is a set of automated processes that allow developers to continuously integrate code changes and deploy them to production.
• Continuous Integration (CI) involves automatically building and testing code changes as they are committed to a shared repository.

• Continuous Deployment (CD) involves automatically deploying code changes to production environments after passing automated tests.

• CI/CD pipelines typicall...read more
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Q2. Explain daemonset in kubernetes.
Ans. 
DaemonSet ensures that all or some nodes run a copy of a Pod
• DaemonSet is a Kubernetes resource that ensures a copy of a Pod is running on all or some nodes in the cluster

• It is useful for running a single instance of a Pod on every node, such as log collection or monitoring agents

• DaemonSet automatically adds or removes Pods as nodes are added or removed from the cluster
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Q1. Explain the networking services in AWS.
Ans. 
AWS provides a variety of networking services to help users manage their network infrastructure.
• Virtual Private Cloud (VPC) allows users to create isolated networks within the AWS cloud

• Elastic Load Balancing distributes incoming traffic across multiple instances to ensure high availability

• Route 53 is a scalable domain name system (DNS) web service

• Direct Connect allows users to establish a dedicated network connection b...read more
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Q2. What is terraform module?
Ans. 
Terraform module is a reusable, configurable, and self-contained collection of Terraform resources.
• Terraform modules help organize and reuse code for infrastructure components

• Modules can be shared and reused across different projects

• Modules can have input variables to customize their behavior

• Modules can output values that can be used by other parts of the infrastructure code
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Q1. Why GitOps tool ?
Ans. 
GitOps tools help automate infrastructure management, version control, and deployment processes.
• Enables infrastructure as code practices

• Facilitates version control for infrastructure configurations

• Automates deployment processes

• Promotes collaboration and visibility among team members

• Examples: Argo CD, Flux, Jenkins X
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Q2. What is AWS secret manager?
Ans. 
AWS Secret Manager is a service that helps you protect access to your applications, services, and IT resources.
• It allows you to securely store, manage, and retrieve sensitive credentials and configuration data.

• You can rotate, manage, and retrieve secrets throughout their lifecycle.

• Integrates with AWS services like Lambda, EC2, RDS, and more for secure access to secrets.

• Helps you meet security and compliance requirement...read more
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30 Minutes Round- Easy to moderate level

Q1. Day to day activities?
Ans. 
Day to day activities involve managing Azure DevOps pipelines, monitoring builds, resolving issues, collaborating with teams.
• Managing Azure DevOps pipelines for continuous integration and deployment

• Monitoring builds and deployments for any issues or failures

• Resolving any issues that arise during the development process

• Collaborating with development teams to ensure smooth workflow and communication

• Implementing best prac...read more
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Q2. Quetsions on various devops tools
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Q1. Linux related questions
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Q2. Networking related
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Q1. Questions on Docker
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Aptitude was mix of questions from logical reasoning, english grammar to simple numerical problems.

Q1. Questions were regarding projects done.
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Q1. Tell me about your work
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Q2. Tell me about your daily tasks
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Basic core subjects and aptitude will do. (or Friends)

Q1. Basics about jenkins, docker and ansible. Some about personal projects, linux, git, Oops and DSA
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Q2. About the role devops.
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Q3. Code on their editor basic concepts like overloading vs overriding, operator overloading, constructor types.
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Q1. About CICD, about Kubernetes, about GIT and GITHUB. and Roles and responsibilities.
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Q1. Same as first round LINUX and AWS questions were asked in addition to those .
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