Luxoft Senior Devops Engineer Interview Questions and Answers

kubectl is a command line tool for interacting with Kubernetes clusters.

• Used to deploy applications, inspect and manage cluster resources, and view logs.

• Can be used to create, delete, and update resources in a Kubernetes cluster.

• Allows for scaling deployments, rolling updates, and debugging applications.

• Provides access to cluster information such as nodes, pods, services, and namespaces.

I faced challenges with outdated infrastructure, lack of automation, and siloed teams.

• Outdated infrastructure caused frequent downtime and performance issues.

• Lack of automation led to manual, error-prone processes and slow deployments.

• Siloed teams resulted in communication gaps and inefficiencies in collaboration.

Strength - Problem-solving skills, Weakness - Overcommitting

• Strength: Strong problem-solving skills - able to analyze complex issues and find effective solutions

• Weakness: Tendency to overcommit - sometimes take on too many tasks at once and struggle to meet deadlines

Synechron is a leading digital consulting firm with a strong focus on innovation and cutting-edge technology solutions.

• Synechron has a reputation for delivering high-quality digital solutions to clients across various industries.

• The company values innovation and encourages employees to think outside the box.

• Synechron offers opportunities for professional growth and development through training and mentorship programs.

Collaboration challenges between Development and Operation teams

• Communication gaps leading to misunderstandings

• Conflicting priorities and timelines

• Resistance to change from either team

• Lack of shared goals and objectives

• Difficulty in integrating new technologies or processes

CI/CD pipeline is a set of automated processes that allow developers to deliver code changes more frequently and reliably.

• CI/CD stands for Continuous Integration/Continuous Delivery.

• CI involves automatically building and testing code changes frequently to catch errors early.

• CD involves automatically deploying code changes to production after passing tests.

• CI/CD pipelines typically include stages like build, test, deplo...read more

CMD is used to provide default arguments for an executing container, while ENTRYPOINT is used to specify the command that will run when the container starts.

• CMD is optional and can be overridden during container runtime

• ENTRYPOINT is required and cannot be overridden during container runtime

• CMD can be used to provide default arguments to the ENTRYPOINT command

Terraform code for creating an AWS EC2 instance

• Define provider and resource block in main.tf file

• Specify the AMI, instance type, key pair, and security group in the resource block

• Run 'terraform init', 'terraform plan', and 'terraform apply' commands to create the EC2 instance

Ansible playbook to install and start Datadog

• Use Ansible's package module to install Datadog agent package

• Use Ansible's service module to start the Datadog service

• Ensure proper configuration settings are applied in the playbook

Shell script to check for a file and create it if it does not exist

• Use the 'test' command to check if the file exists

• If the file does not exist, use 'touch' command to create it

A Dockerfile is a text document that contains all the commands a user could call on the command line to assemble an image.

• Start with a base image using the FROM keyword

• Use the RUN keyword to execute commands in the image

• Use the COPY or ADD keyword to add files from the host machine to the image

• Use the CMD keyword to specify the command to run when the container starts

EPAM is a global provider of software engineering and IT consulting services.

• EPAM was founded in 1993 in Princeton, New Jersey.

• It has offices in over 30 countries worldwide.

• EPAM offers services in areas such as software development, testing, and consulting.

• The company works with clients in various industries, including finance, healthcare, and retail.