Zeetron Networks AWS Cloud and DevOps Engineer Interview Questions and Answers

Q1. What technology have you used
Ans. 
I have experience with a variety of technologies including AWS, Docker, Kubernetes, Jenkins, Terraform, and Ansible.
• AWS

• Docker

• Kubernetes

• Jenkins

• Terraform

• Ansible
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Q1. How can you perform rolling updates and rollbacks of applications in Kubernetes?
Ans. 
Rolling updates and rollbacks in Kubernetes can be performed using deployment objects and their configurations.
• Use Kubernetes deployment objects to manage application updates.

• Specify the desired number of replicas and update strategy in the deployment configuration.

• To perform a rolling update, change the image version in the deployment configuration and apply the changes.

• Kubernetes will gradually update pods to the new...read more
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Q2. What is the purpose of Helm in Kubernetes, and how does it simplify application deployment and management
Ans. 
Helm is a package manager for Kubernetes that simplifies application deployment and management.
• Helm allows users to define, install, and upgrade complex Kubernetes applications with ease using charts.

• It helps in managing dependencies, configurations, and versions of applications in Kubernetes.

• Helm enables sharing of applications through public or private repositories, promoting reusability and collaboration.

• It provides...read more
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Q3. How would you troubleshoot a Pod that is not running as expected in a Kubernetes cluster?
Ans. 
To troubleshoot a Pod not running in a Kubernetes cluster, check logs, describe Pod, check resource limits, verify network connectivity, and restart Pod.
• Check the logs of the Pod to identify any error messages or issues

• Describe the Pod to get more information about its status, events, and configuration

• Check the resource limits and requests of the Pod to ensure it has enough resources to run

• Verify network connectivity w...read more
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Q4. What are DaemonSets in Kubernetes, and when might you use them
Ans. 
DaemonSets in Kubernetes ensure that a copy of a pod is running on all or a subset of nodes in a cluster
• DaemonSets are used when you need to run a single pod on all nodes in a cluster, such as logging or monitoring agents

• They are also useful for running pods that provide node-level services, like storage or networking

• DaemonSets can be used to ensure that a specific pod is always running on specific nodes, regardless of
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Q5. What is a Persistent Volume (PV) and a Persistent Volume Claim (PVC) in Kubernetes, and how do they relate to stateful applications?
Ans. 
PV and PVC in Kubernetes are used to provide persistent storage for stateful applications.
• Persistent Volume (PV) in Kubernetes is a piece of storage in the cluster that has been provisioned by an administrator.

• Persistent Volume Claim (PVC) is a request for storage by a user or pod in the cluster.

• PVs and PVCs decouple storage from the pod, allowing for easier management and scaling of stateful applications.

• PVs can be dy...read more
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Q1. NO ROUND CONDUCTED SIMPLY WASTED 6 MONTHS
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About aws and devops

Q1. Ask me basic questions on aws
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Q1. My self ShoaibAkthar Iam from Andhra Pradesh kurnool I am completed bachelor of degree I recently completed my degree 2022 passed out Iam fresher
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Q2. So iam doing course Aws devops Ec2
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Q1. They asked me to write a dockerfile
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Q2. Minimal questions about linux
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Q1. Azure devops methodology, terraform related questions, docker and kubernetes related questions, shell script.
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Q2. How would you manage the drift in terraform if services are added manually?
Ans. 
To manage drift in Terraform due to manually added services, use Terraform import, state management, and version control.
• Use Terraform import to bring manually added services under Terraform management.

• Regularly update Terraform state file to reflect the current state of infrastructure.

• Utilize version control to track changes made outside of Terraform.

• Implement automated checks to detect and reconcile drift in infrastr
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Q3. How would you safeguard the data and services?
Ans. 
To safeguard data and services, I would implement encryption, access controls, regular backups, and monitoring.
• Implement encryption for data at rest and in transit

• Set up access controls to restrict unauthorized access

• Regularly backup data to prevent data loss

• Implement monitoring and alerting to detect and respond to security incidents
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Q4. Shell commands like copy folder, rename, awk.
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Q1. Why are you switching? Did you go through company's key values? What would you do if team is not collaborating efficiently? Why do you want to join us? Any significant achievement during your job? Weakness...read more
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Q1. Share Your experience on Creating AWS resources. GUI or using IAC tool?
Ans. 
I primarily use IAC tools like Terraform to create AWS resources for consistency, version control, and automation.
• I prefer using IAC tools like Terraform for creating AWS resources as it allows for infrastructure as code, version control, and automation.

• Using IAC tools ensures consistency in resource creation across environments.

• GUI can be useful for quick prototyping or exploring AWS services, but IAC is more efficien...read more
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Q2. Have you got any issues in pod, while creating or monitoring pods in the kubernetes cluster?
Ans. 
Yes, I have faced issues while creating or monitoring pods in a Kubernetes cluster.
• One common issue is pods getting stuck in a pending state due to resource constraints or scheduling issues.

• Another issue is pods crashing frequently due to misconfigured settings or incompatible container images.

• Monitoring pods can be challenging, especially when dealing with a large number of pods and trying to track their health and pe...read more
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Q3. What are use of Versioning in S3? Have you got any issues in working using S3?
Ans. 
Versioning in S3 allows for preserving, retrieving, and restoring every version of an object stored in a bucket.
• Enables recovery from unintended user actions or application failures

• Helps in maintaining different versions of objects for audit or compliance purposes

• Prevents accidental deletion or overwriting of objects

• Useful for tracking changes and rolling back to previous versions if needed
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Q4. What are the Devops tools, you have experience on?
Ans. 
I have experience with various DevOps tools including Jenkins, Docker, Ansible, and Terraform.
• Jenkins

• Docker

• Ansible

• Terraform
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