American Express Devops Engineer Interview Questions and Answers

Shell scripts, automation questions asked

Q1. What is problem management
Ans. 
Problem management is the process of identifying, analyzing, and resolving recurring issues to minimize their impact on the system.
• Problem management aims to prevent incidents from occurring by addressing their root causes.

• It involves documenting and tracking problems, analyzing their patterns, and implementing corrective actions.

• Examples of problem management activities include trend analysis, root cause analysis, and...read more
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Q2. Few Linux base questions
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Good learning in scb, Worked happily and flexible with good team, good leads and managers
Ansible, docker and kubernetes

Q1. What is ansible and docker
Ans. 
Ansible is a configuration management tool while Docker is a containerization platform.
• Ansible automates software provisioning, configuration management, and application deployment.

• Docker allows developers to package applications and dependencies into containers for easy deployment and scalability.

• Ansible can be used to manage Docker containers and orchestrate container deployments.

• Docker can be used with Ansible to cr...read more
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Q2. Explain the project in detail
Ans. 
The project is a cloud-based platform for managing and deploying applications.
• The platform uses Kubernetes for container orchestration.

• It supports multiple programming languages and frameworks.

• It has a user-friendly interface for managing deployments and scaling.

• It includes monitoring and logging features for troubleshooting.

• It integrates with popular CI/CD tools like Jenkins and GitLab.

• It has a robust security model w...read more
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3 ques at time in coding round with mid level difficulty

Q1. What is your roles and responsibilities in your current job..?
Ans. 
I am responsible for designing, implementing, and maintaining the infrastructure and tools necessary for the development and operation of software applications.
• Designing and implementing automation tools for continuous integration and deployment

• Monitoring system performance and troubleshooting issues

• Collaborating with development and operations teams to ensure smooth deployment processes
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Q2. What is CICD...? What is functions used in jenkinsfile..?
Ans. 
CICD stands for Continuous Integration/Continuous Deployment. Jenkinsfile functions include stages, steps, post, and more.
• CICD stands for Continuous Integration/Continuous Deployment

• Jenkinsfile functions include stages, steps, post, agent, environment, and more

• Stages define a series of tasks to be executed in a pipeline

• Steps define individual actions within a stage

• Post defines actions to be taken after the pipeline has...read more
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Q3. What is Kubernetes ..?
Ans. 
Kubernetes is an open-source container orchestration platform for automating deployment, scaling, and management of containerized applications.
• Kubernetes helps in automating the deployment, scaling, and management of containerized applications.

• It allows for easy scaling of applications by adding or removing containers based on demand.

• Kubernetes provides features like service discovery, load balancing, and self-healing ...read more
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Q4. What is Workspaces in docker
Ans. 
Workspaces in Docker are isolated environments where developers can work on different projects without affecting each other.
• Workspaces allow developers to have separate environments for each project, preventing conflicts between dependencies.

• Each workspace has its own set of containers, volumes, and networks, ensuring isolation.

• Developers can easily switch between workspaces to work on different projects.

• Workspaces are...read more
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Q5. How Cost Optimization achieved ..? Give a example where you achieved this.
Ans. 
Cost optimization in DevOps is achieved through efficient resource utilization, automation, and continuous monitoring.
• Implementing auto-scaling to dynamically adjust resources based on demand

• Using containerization to maximize resource utilization and reduce costs

• Leveraging cloud services for pay-as-you-go pricing model

• Implementing cost monitoring tools to identify and eliminate wasteful spending

• Optimizing code and infr...read more
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Q6. What is the challange that you faced in your work and how you can overcome that..?
Ans. 
I faced a challenge in automating deployment process due to complex infrastructure setup.
• Identified key pain points in the deployment process

• Collaborated with team to streamline infrastructure setup

• Implemented automation tools like Ansible to simplify deployment
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Q7. How monitoring has been done .? Explain Prometheus and Grafana.
Ans. 
Monitoring is done using Prometheus and Grafana. Prometheus collects metrics and Grafana visualizes them.
• Prometheus is an open-source monitoring and alerting toolkit

• It collects metrics from monitored targets by scraping HTTP endpoints

• Grafana is a visualization tool that creates dashboards for the collected metrics

• It allows users to create graphs, charts, and alerts based on the data from Prometheus
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Q1. What ever you keep on your resume. Those only they ask
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Q1. Ci cd tools.. Backend work
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Q2. Monitoring tools like splunk dynatrace
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Q3. Questions on linux
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Q4. Questions on Database, rabbitmq, load blancers
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Q5. Questions on cloud and sheel scripting
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