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DevOps Interview Questions in Hyderabad

36 practice questions with answers for DevOps interviews in Hyderabad.

DevOps jobs in Hyderabad

Hyderabad has large engineering and capability centres of global technology, banking and pharma companies around HITEC City and the Financial District. Many roles are with global capability centres that work with teams in the US and Europe.

Below are 36 questions that match the mix of service, product and domain employers hiring junior devops engineers in Hyderabad.

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01

When do you use a StatefulSet instead of a Deployment?

KubernetesMedium
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Use a StatefulSet for stateful workloads such as databases, Kafka or Elasticsearch that need stable identity. Pods get fixed names like db-0 and db-1, start and stop in order, and each gets its own PersistentVolumeClaim that follows it after rescheduling. A headless service gives each pod a stable DNS name. Deployments treat pods as interchangeable, which suits stateless apps.
02

What is a multi-stage Docker build and why use it?

Docker and ContainersMedium
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A multi-stage build uses several FROM instructions in one Dockerfile. Early stages contain compilers and build tools to produce the artefact; the final stage starts from a small runtime image and copies only the built output with COPY --from. The result is a much smaller image with fewer vulnerabilities, because build tools, source code and caches never reach production.
03

Explain the Jenkins controller and agent architecture.

CI/CD PipelinesMedium
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The Jenkins controller stores configuration, schedules jobs, serves the UI and keeps build history. Agents are separate machines or containers that actually execute build steps, connected over SSH or JNLP and selected by labels. Running builds on agents rather than the controller keeps the controller stable and secure, and lets you scale with dynamic agents on Kubernetes or cloud VMs that are created per build.
04

The on-call team gets dozens of alerts every night and is burning out. How do you fix it?

Monitoring, Logging and SREMedium
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Collect alert data for a few weeks: which fired, how often, and whether anyone acted. Delete or downgrade non-actionable alerts, tune thresholds and add for durations, and group duplicates in Alertmanager. Fix the recurring root causes behind the top alerts and automate common fixes. Move to SLO-based alerts and make sure rotations are fair with follow-up time after bad nights.
05

What is the difference between count and for_each in Terraform?

Infrastructure as Code (Terraform and Ansible)Medium
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count creates N copies indexed by number, such as aws_instance.web[0]. Removing an item in the middle shifts indexes and can destroy and recreate resources unexpectedly. for_each iterates over a map or set of strings and keys each instance by name, such as aws_s3_bucket.b["logs"], so adding or removing one item affects only that item. Prefer for_each for named collections.
06

How do you schedule a cron job to run every day at 2:30 AM?

Linux and Shell ScriptingEasy
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crontab -e # min hour day month weekday command 30 2 * * * /opt/scripts/backup.sh >> /var/log/backup.log 2>&1 crontab -l # list jobs Use absolute paths because cron runs with a minimal PATH and environment. Redirect output to a log, otherwise errors are mailed or lost. On systemd hosts, timers are an alternative with better logging.
07

How do you limit CPU and memory for a container?

Docker and ContainersMedium
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docker run -d --name api \ --memory=512m --memory-swap=512m \ --cpus=1.5 \ --restart=unless-stopped \ myapp:1.0 # change limits on a running container docker update --memory=1g --memory-swap=1g api If the process exceeds the memory limit it is OOM killed, so set application heap sizes below the limit. --cpus caps CPU time rather than reserving cores.
08

Explain Docker network types.

Docker and ContainersMedium
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bridge is the default: containers get private IPs on a virtual bridge and reach outside through NAT; user-defined bridges also provide DNS by container name. host shares the host's network stack directly, with no port mapping. none disables networking. overlay connects containers across multiple hosts in Swarm. macvlan gives a container its own MAC address on the physical network.
09

What are Terraform modules?

Infrastructure as Code (Terraform and Ansible)Medium
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A module is a reusable folder of Terraform files with input variables and outputs, for example a vpc module or an eks-cluster module. The root module calls child modules with different values for each environment. Modules reduce duplication and enforce standards across teams. They can come from local paths, Git or the Terraform Registry and should be pinned to versions.
10

What is the difference between a security group and a network ACL?

AWS Cloud for DevOpsMedium
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A security group acts as a firewall for instances or network interfaces. It is stateful, so return traffic is allowed automatically, and it supports only allow rules. A network ACL works at the subnet level, is stateless, so inbound and outbound rules must both allow traffic, supports allow and deny rules, and evaluates rules in number order. Security groups are the main control.
11

You pushed a broken commit to the shared main branch and the build is failing. What do you do?

Git and Version ControlMedium
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First restore a green main quickly: run git revert <hash> and push, which adds an undo commit without rewriting history that others have pulled. Tell the team in the channel. Then fix the issue on a branch with a proper pull request and tests. Avoid git reset with force push on main; branch protection rules should block it anyway.
12

Write a Deployment manifest with 3 replicas, resource limits and a readiness probe.

KubernetesMedium
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apiVersion: apps/v1 kind: Deployment metadata: name: api spec: replicas: 3 selector: matchLabels: app: api template: metadata: labels: app: api spec: containers: - name: api image: registry.example.com/api:1.4.2 ports: - containerPort: 8080 resources: requests: {cpu: 250m, memory: 256Mi} limits: {cpu: 500m, memory: 512Mi} readinessProbe: httpGet: {path: /health, port: 8080} periodSeconds: 5
13

How do you create a Secret and use it as an environment variable in a pod?

KubernetesMedium
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kubectl create secret generic db-creds \ --from-literal=DB_USER=app --from-literal=DB_PASS='S3cret!' -n shop # in the container spec env: - name: DB_PASS valueFrom: secretKeyRef: name: db-creds key: DB_PASS # or load all keys envFrom: - secretRef: name: db-creds Pods do not pick up changed env values until restarted; mounted secret files update automatically.
14

How do you communicate with stakeholders during an outage?

Monitoring, Logging and SREMedium
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I post a short first update quickly saying what is affected, that we are working on it and when the next update will come. Then I update at a fixed interval, such as every 20 minutes, in plain language without guessing at causes. I keep technical detail in the engineering channel. After resolution, I send a summary with impact, cause and next steps.
15

Builds fail randomly because of flaky tests. How do you handle it?

CI/CD PipelinesMedium
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First identify flaky tests by tracking which tests fail and pass on the same commit. Quarantine them into a separate non-blocking job so the main pipeline stays trustworthy, and raise tickets with owners. Common causes are timing assumptions, shared test data, order dependence and external services. Blind automatic retries hide real bugs, so use them only briefly while fixing the root cause.
16

What is the ELK or EFK stack?

Monitoring, Logging and SREEasy
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ELK is Elasticsearch, Logstash and Kibana: Logstash or Beats collect and parse logs, Elasticsearch stores and indexes them, and Kibana provides search and dashboards. EFK replaces Logstash with Fluentd or Fluent Bit, which is common in Kubernetes as a DaemonSet. Centralised logging lets you search across all servers and containers in one place instead of SSH-ing into each.
17

Write a production-ready Dockerfile for a Node.js application.

Docker and ContainersMedium
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FROM node:20-alpine WORKDIR /app ENV NODE_ENV=production COPY package.json package-lock.json ./ RUN npm ci --omit=dev COPY . . USER node EXPOSE 3000 CMD ["node", "server.js"] Dependencies are copied and installed before source code so the layer is cached. npm ci gives reproducible installs, USER node avoids running as root, and exec form CMD lets the app receive signals.
18

How do you create a new branch, push it and set the upstream?

Git and Version ControlEasy
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git switch -c feature/payment-retry # make changes git add . git commit -m "Add retry for failed payments" git push -u origin feature/payment-retry After -u (set upstream), plain git push and git pull work on this branch without naming the remote. Then open a pull request against main.
19

How do you make your commits and pull requests easy for teammates to review?

Git and Version ControlEasy
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I keep each pull request focused on one change and small enough to review in about fifteen minutes. Commits have clear messages saying what and why. The description explains the problem, the approach, how I tested it and any risk or rollback step. I run linters and tests locally first, and I reply to every review comment, even if just to say done.
20

What is an inode in Linux?

Linux and Shell ScriptingMedium
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An inode is a data structure that stores a file's metadata: owner, permissions, size, timestamps, link count and pointers to data blocks, but not the file name. Names live in directory entries that map to inode numbers. A file system has a fixed number of inodes, so millions of tiny files can exhaust them while disk space is still free; check with df -i.
21

You need to bring existing manually created cloud resources under Terraform. How?

Infrastructure as Code (Terraform and Ansible)Medium
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Write the resource blocks in code, then import the real resources into state. Since Terraform 1.5 you can declare import blocks with the resource ID and run plan; terraform plan -generate-config-out can even draft the configuration. Older versions use the terraform import CLI command. Run plan until it shows no changes, which proves code matches reality.
22

Write a declarative Jenkinsfile with build, test and deploy stages.

CI/CD PipelinesMedium
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pipeline { agent { label 'linux' } stages { stage('Build') { steps { sh 'mvn -B clean package -DskipTests' } } stage('Test') { steps { sh 'mvn -B test' } post { always { junit 'target/surefire-reports/*.xml' } } } stage('Deploy') { when { branch 'main' } steps { sh './deploy.sh staging' } } } post { failure { echo 'Build failed' } } }
23

How do you add a health check to a Docker image?

Docker and ContainersMedium
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FROM nginx:1.27-alpine COPY site/ /usr/share/nginx/html/ HEALTHCHECK --interval=30s --timeout=3s --start-period=10s --retries=3 \ CMD wget -qO- http://localhost/ || exit 1 # check status docker inspect --format '{{.State.Health.Status}}' web Docker marks the container healthy or unhealthy. Compose can wait on it with condition: service_healthy. Kubernetes ignores HEALTHCHECK and uses its own probes.
24

Which AWS CLI commands do you commonly use?

AWS Cloud for DevOpsEasy
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aws configure aws sts get-caller-identity aws ec2 describe-instances \ --filters Name=instance-state-name,Values=running \ --query 'Reservations[].Instances[].[InstanceId,PrivateIpAddress]' --output table aws s3 cp build.zip s3://acme-artifacts/releases/ aws s3 sync ./site s3://acme-site --delete aws logs tail /aws/lambda/orders --follow get-caller-identity confirms which account and role you are using before you run anything risky.
25

Explain liveness, readiness and startup probes.

KubernetesMedium
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A liveness probe checks whether the container is healthy; if it fails, the kubelet restarts it. A readiness probe checks whether it can serve traffic; if it fails, the pod is removed from service endpoints but not restarted. A startup probe gives slow-starting apps time to boot and holds off the other probes until it succeeds. Wrong liveness probes can cause restart loops.
26

Write Terraform code to create an AWS EC2 instance.

Infrastructure as Code (Terraform and Ansible)Medium
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terraform { required_providers { aws = { source = "hashicorp/aws", version = "~> 5.0" } } } provider "aws" { region = "ap-south-1" } resource "aws_instance" "web" { ami = var.ami_id instance_type = "t3.micro" subnet_id = var.subnet_id tags = { Name = "web-server" Env = "dev" } } Run terraform init, plan and apply. ap-south-1 is the Mumbai region.
27

What is Kubernetes and why do companies use it?

KubernetesEasy
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Kubernetes is an open-source container orchestration platform. You declare the desired state, such as five replicas of an API, and it schedules containers across nodes, restarts failed ones, scales them, balances traffic and rolls out updates. Companies use it to run many microservices reliably on shared infrastructure, on any cloud or on-premises, through managed services like EKS, AKS and GKE.
28

You need one pipeline that deploys to dev, staging and production with approval before production. How do you design it?

CI/CD PipelinesMedium
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Build and test once, publish a versioned artefact, then promote it through environments. Dev deploys automatically on merge, staging deploys after dev smoke tests, and production waits for a manual approval from authorised people using a Jenkins input step or GitHub environment protection rules. Keep environment-specific settings in config files or parameters, not separate pipelines, and record who approved each release.
29

An EC2 instance in a private subnet cannot download packages from the internet. Why?

AWS Cloud for DevOpsMedium
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A private subnet has no direct route to the Internet Gateway. Check that its route table sends 0.0.0.0/0 to a NAT Gateway placed in a public subnet, that the NAT Gateway has an Elastic IP, and that the security group and NACL allow outbound traffic and return ports. For AWS services like S3, a VPC endpoint avoids NAT data charges.
30

What are Git hooks and how are they used in DevOps?

Git and Version ControlMedium
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Hooks are scripts Git runs at events such as pre-commit, commit-msg and pre-push on the client, or pre-receive on the server. Teams use them to run linters, format code, block secrets or enforce commit message formats before code leaves a laptop. Client hooks are not shared by default, so tools like pre-commit or Husky manage them, and CI repeats the checks.
31

How do you create an EKS cluster with eksctl and connect kubectl to it?

AWS Cloud for DevOpsMedium
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eksctl create cluster \ --name shop-dev \ --region ap-south-1 \ --nodegroup-name workers \ --node-type t3.medium \ --nodes 2 --nodes-min 2 --nodes-max 5 \ --managed aws eks update-kubeconfig --name shop-dev --region ap-south-1 kubectl get nodes eksctl builds CloudFormation stacks for the VPC, control plane and node group. In production, teams usually manage EKS with Terraform modules instead.
32

What is load average in Linux and how do you read it?

Linux and Shell ScriptingMedium
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Load average is the average number of processes running or waiting for CPU (and uninterruptible I/O) over 1, 5 and 15 minutes, shown by uptime or top. Compare it with the number of CPU cores: a load of 4 on a 4-core machine means full use, while 12 means work is queuing. A high load with low CPU use often points to disk or network I/O waits.
33

What is the AWS shared responsibility model?

AWS Cloud for DevOpsEasy
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AWS is responsible for security of the cloud: physical data centres, hardware, the network and the hypervisor. The customer is responsible for security in the cloud: IAM, data encryption, OS patching on EC2, security groups and application code. The split shifts with the service; for managed services like RDS or Lambda, AWS handles more of the underlying patching.
34

When would you choose ECS, EKS or Lambda?

AWS Cloud for DevOpsMedium
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Lambda runs functions without servers, billed per request and duration, ideal for event-driven tasks with short runtimes up to 15 minutes. ECS is AWS's simpler container orchestrator, good when you want containers without Kubernetes complexity, often with Fargate. EKS is managed Kubernetes, chosen for portability, a rich ecosystem and existing Kubernetes skills, but it needs more operational knowledge.
35

What are the S3 storage classes and lifecycle policies?

AWS Cloud for DevOpsEasy
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S3 Standard is for frequently accessed data. Standard-IA and One Zone-IA are cheaper for infrequent access but charge retrieval fees. Intelligent-Tiering moves objects automatically based on access. Glacier Instant, Flexible Retrieval and Deep Archive are for archives with slower, cheaper access. Lifecycle rules move objects between classes after a set age and delete old versions or logs automatically.
36

What is remote state and state locking in Terraform?

Infrastructure as Code (Terraform and Ansible)Medium
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Remote state stores the state file in a shared backend such as an S3 bucket, Azure Storage or Terraform Cloud, so the whole team and CI use the same state. Locking prevents two runs from changing state at the same time, avoiding corruption; on S3 it uses a lock file or a DynamoDB table. Enable versioning and encryption on the backend for recovery and security.

Companies with offices in Hyderabad (16)

IT services

TCS

DevOps interview questions

  • 30 questions
  • 4 rounds

Mumbai, Chennai, Pune +2

View questions
IT services

Infosys

DevOps interview questions

  • 30 questions
  • 4 rounds

Bengaluru, Mysuru, Pune +2

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IT services

Wipro

DevOps interview questions

  • 30 questions
  • 4 rounds

Bengaluru, Hyderabad, Pune +2

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Consulting

Accenture

DevOps interview questions

  • 30 questions
  • 4 rounds

Bengaluru, Hyderabad, Pune +2

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IT services

Cognizant

DevOps interview questions

  • 30 questions
  • 4 rounds

Chennai, Bengaluru, Pune +2

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IT services

Capgemini

DevOps interview questions

  • 30 questions
  • 4 rounds

Mumbai, Bengaluru, Pune +2

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IT services

HCLTech

DevOps interview questions

  • 30 questions
  • 4 rounds

Noida, Chennai, Bengaluru +2

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IT services

Tech Mahindra

DevOps interview questions

  • 30 questions
  • 4 rounds

Pune, Hyderabad, Bengaluru +2

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IT services

IBM

DevOps interview questions

  • 30 questions
  • 4 rounds

Bengaluru, Pune, Hyderabad +2

View questions
Product

Amazon

DevOps interview questions

  • 30 questions
  • 5 rounds

Bengaluru, Hyderabad, Chennai +2

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Product

Microsoft

DevOps interview questions

  • 30 questions
  • 5 rounds

Hyderabad, Bengaluru, Noida +2

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E-commerce & consumer tech

Flipkart

DevOps interview questions

  • 30 questions
  • 5 rounds

Bengaluru, Hyderabad

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E-commerce & consumer tech

Swiggy

DevOps interview questions

  • 30 questions
  • 4 rounds

Bengaluru, Hyderabad

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Consulting

Thoughtworks

DevOps interview questions

  • 30 questions
  • 5 rounds

Pune, Bengaluru, Chennai +2

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Banking & finance

JP Morgan Chase

DevOps interview questions

  • 30 questions
  • 5 rounds

Mumbai, Bengaluru, Hyderabad

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Product

Freshworks

DevOps interview questions

  • 30 questions
  • 5 rounds

Chennai, Bengaluru, Hyderabad

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Frequently asked questions

Which companies hire DevOps professionals in Hyderabad?

Companies with large offices in Hyderabad include TCS, Infosys, Wipro, Accenture, Cognizant, Capgemini, HCLTech, Tech Mahindra, IBM, Amazon. Use their company pages below to practise employer-specific sets.

Are DevOps interviews in Hyderabad different from other cities?

The questions depend more on the company than the city. Hyderabad's mix of employers decides the style: Many roles are with global capability centres that work with teams in the US and Europe

How do I find DevOps jobs in Hyderabad?

Shortlist companies with Hyderabad offices, keep your CV focused on DevOps projects, apply on company career pages and job portals with the Hyderabad filter, and practise the questions on this page before each interview.

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