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Channel Posts
šÆ Make your DevOps/Cloud resume impossible to ignore.
š¬Most engineers write the same bullets:
Kubernetes, Docker, Jenkins, Terraform, AWS, Helm, Prometheusā¦
These are tools, not outcomes.
Hiring managers want to know if you can keep platforms stable, scalable and predictable in production.
They ask: š āCan this engineer keep my platform healthy during real-world traffic and failures?ā
š¬Write transformations, not tool lists:
⢠Donāt say āused Kubernetes.ā Say how deployments survived node failures and reduced downtime.
⢠Donāt say ābuilt pipelines.ā Say how CI/CD shipped features safely without breaking production.
⢠Donāt say āwrote Terraform.ā Say how infra patterns made environments reproducible and secure.
⢠Donāt say āconfigured Prometheus.ā Say how alerting cut MTTR and protected SLAs.
⢠Donāt say āsaved cost.ā Say how you automated power-off of dev workloads during off hours, right-sized VMs, and removed idle resources to cut monthly cloud spend.
⢠Donāt say āconfigured networking.ā Say how you centralized networking in a single account, enforced VPC standards, and simplified cross-team connectivity.
⢠Donāt say āimproved security.ā Say how you implemented least privilege IAM, automated key rotation, and passed an external audit with zero critical findings.
⢠Donāt say āscaled the app.ā Say how you designed autoscaling and capacity plans that maintained 99.x percent availability during peak traffic.
These are the bullets hiring managers remember. These bullets get interviews.š± š šØš„š„šØš° š¦š šØš§ šš¢ššš®š ššØš« š¦šØš«š šššÆšš©š¬ ššš¬šØš®š«ššš¬ : https://github.com/NotHarshhaa š± š šØš„š„šØš° @devopsclassroom ššØš« š¦šØš«š š¬š®šš” ššØš§ššš§š šš«šØš®š§š šš„šØš®š & šššÆšš©š¬!!! // ššØš¢š§ ššØš« šššÆšš©š¬ šššš¬: @devopsdocs
| 2 | š Final Round Interview Completed at Neurealm (Senior DevOps Engineer) š
Today my friend appeared for the final technical round at Neurealm, and it was a complete deep dive into real-world DevOps scenarios.
The panel focused heavily on Kubernetes, Helm, Jenkins, AWS, Terraform, Prometheus & Grafana ā all scenario-based and practical.
Sharing the questions here so others preparing for similar roles can benefit ā”ļø
š¬Kubernetes ā Scenario-Based Questions
- Your Pod is restarting frequently. How do you identify the root cause?
- A Deployment is stuck in "progressing" state ā how do you troubleshoot?
- How do you debug a CrashLoopBackOff issue?
- How do you check which Pods are consuming high memory or CPU?
- Node is in NotReady state ā steps to investigate?
- Your application is not accessible through service ā what will you check?
- How do you handle failed daemonset pods?
- Persistent Volume not attaching ā whatās your troubleshooting approach?
- How do you perform rolling updates and rollbacks safely?
- How do you perform health checks for Pods and Nodes in live environments?
š¬Helm ā Practical Questions
- What are values.yaml and how do you override them?
- How do you manage multiple environment deployments using Helm?
- How do you debug a failed Helm release?
- What is the difference between Helm Chart, Release, and Repository?
š¬Jenkins ā CI/CD Questions
- Why choose Declarative Pipeline over Scripted Pipeline?
- How do you integrate SonarQube into a Jenkins pipeline?
- How do you build ā containerize ā push ā deploy using Jenkins?
š¬AWS ā Scenario Questions
- Your EC2 instance is unreachable ā how do you diagnose?
- How do you implement Auto Scaling with proper health checks?
- Difference between ALB and NLB and when to use which?
- S3 cross-region replication setup steps?
- How to troubleshoot high latency in API Gateway?
- How do you reduce RDS cost without downtime?
- What happens if Terraform state is deleted in S3?
- How do you secure your VPC workloads at scale?
š¬Terraform ā Infra as Code Questions
- How do you recover from a deleted Terraform state file?
- How do you create 50 EC2 instances with different configurations (dynamic blocks)?
- Share your screen and write a terraform code to create a VPC with all there components and create a RDS database into VPC.
š¬Prometheus & Grafana ā Monitoring Questions
- How do you set up custom metrics for Kubernetes pods?
- How do you troubleshoot missing data points in Grafana dashboards?
- How do you create alerts for high CPU or memory usage?
š¬Reflection:
This interview round was entirely hands-on, scenario-focused, and tested how well you handle production-grade issues, automation thinking, and troubleshooting skills.
If you're preparing for DevOps/SRE roles ā start practicing real scenarios, not definitions.
š± š
šØš„š„šØš° š¦š šØš§ šš¢ššš®š ššØš« š¦šØš«š šššÆšš©š¬ ššš¬šØš®š«ššš¬ : https://github.com/NotHarshhaa
š± š
šØš„š„šØš° @devopsclassroom ššØš« š¦šØš«š š¬š®šš” ššØš§ššš§š šš«šØš®š§š šš„šØš®š & šššÆšš©š¬!!! // ššØš¢š§ ššØš« šššÆšš©š¬ šššš¬: @devopsdocs | 1 983 |
| 3 | š You said you know Kubernetes?
Cool. Letās find out.
Because the moment you drop āKubernetesā in a DevOps interviewā¦
Youāve just invited a deep dive from hell.
Not āwhatās a Pod?ā
Not āwhatās the difference between a ReplicaSet and a Deployment?ā
Iām talking about the kind of questions I ask as a Principal DevOps Engineer - to see if youāve actually run clusters in production, not just deployed NGINX on kind once.
Here are 15 real-world Kubernetes questions that separate K8s admins/operators from K8s experts wannabes. š
āļø šš²š²š½ šš¶šš² šš²šÆšš“š“š¶š»š“
1 - Pod stuck in CrashLoopBackOff, no logs, no errors.
ā How do you debug beyond kubectl logs and describe?
2 - A StatefulSet pod wonāt reattach its PVC after a node crash.
ā How do you recover without recreating storage?
3 - Pods are Pending, Cluster Autoscaler wonāt scale up.
ā Walk me through your top 3 debugging steps.
4 - NetworkPolicy blocks cross-namespace traffic.
ā How do you design least-privilege rules and test them safely?
5 - Service must connect to an external DB via VPN inside the cluster.
ā How do you architect it for HA + security?
š§± š¦š²š°ššæš¶šš + ššæš°šµš¶šš²š°šššæš²
6 - Running a multi-tenant EKS cluster.
ā How do you isolate workloads with RBAC, quotas, and network segmentation?
7 - Kubelet keeps restarting on one node.
ā Where do you look first ā systemd, container runtime, or cgroups?
8 - Critical pod got evicted due to node pressure.
ā Explain QoS classes and eviction policies.
9 - A rolling update caused downtime.
ā What went wrong in your readiness/startup probe or deployment config?
10 - Ingress Controller fails under load.
ā How do you debug and scale routing efficiently?
āļø š£š²šæš³š¼šæšŗš®š»š°š² + š„š²š¹š¶š®šÆš¶š¹š¶šš
11 - Istio sidecar consumes more CPU than your app.
ā How do you profile and optimise mesh performance?
12 - etcd is slowing down control plane ops.
ā Root causes + how do you tune it safely?
13 - You must enforce images from a trusted internal registry only.
ā Gatekeeper, Kyverno, or custom Admission Webhook ā whatās your move?
14 - Pods stuck in ContainerCreating forever.
ā CNI attach delay? OverlayFS corruption? Walk me through your root-cause process.
15 - Random DNS failures in Pods.
ā How do you debug CoreDNS, kube-proxy, and conntrack interactions?
If you can answer these confidentlyā¦
You donāt just use Kubernetes - you operate, secure, and scale it.
Letās raise the bar for DevOps engineers.
š± š
šØš„š„šØš° š¦š šØš§ šš¢ššš®š ššØš« š¦šØš«š šššÆšš©š¬ ššš¬šØš®š«ššš¬ : https://github.com/NotHarshhaa
š± š
šØš„š„šØš° @devopsclassroom ššØš« š¦šØš«š š¬š®šš” ššØš§ššš§š šš«šØš®š§š šš„šØš®š & šššÆšš©š¬!!! // ššØš¢š§ ššØš« šššÆšš©š¬ šššš¬: @devopsdocs | 2 520 |
| 4 | šØ DevOps/Cloud Advanced Production Issues šØ
ā”ļø Why is CPU or memory usage suddenly high on pods or EC2 instances?
Reason: Memory leaks, unoptimized code, or infinite loops.
ā”ļø Why is disk usage reaching 100% suddenly?
Reason: Old logs, temp data, or backups filling /var/log.
ā”ļø Why are Kubernetes pods in CrashLoopBackOff state?
Reason: Failed readiness/liveness probes or bad configuration.
ā”ļø Why is my pod getting OOMKilled repeatedly?
Reason: Container exceeds memory limit.
ā”ļø Why is my Jenkins pipeline failing at random stages?
Reason: Environment inconsistency or missing dependencies.
ā”ļø Why is Terraform showing state lock or drift detected?
Reason: Multiple users modifying infra or manual AWS console changes.
ā”ļø Why did my EC2 instance crash during traffic spike?
Reason: No autoscaling or CPU credit exhaustion.
ā”ļø Why is the application not connecting to the database?
Reason: Wrong credentials, security group, or parameter group issues.
ā”ļø Why is API latency increasing after each deployment?
Reason: Unoptimized queries or cold starts (Lambda).
ā”ļø Why is the Docker image size too large?
Reason: Unnecessary layers or base image bloat.
ā”ļø Why is CloudWatch not showing logs from ECS tasks?
Reason: Wrong IAM role or log driver misconfiguration.
ā”ļø Why are Lambda functions timing out randomly?
Reason: Cold starts or external service latency.
ā”ļø Why is the S3 bucket filling too fast?
Reason: No lifecycle policy or backup scripts flooding data.
ā”ļø Why is Route 53 not routing traffic properly?
Reason: TTL propagation or wrong health check configuration.
ā”ļø Why is Jenkins build taking too long to complete?
Reason: Inefficient builds, large dependencies, or lack of caching.
ā”ļø Why did my Kubernetes node go into NotReady state?
Reason: Network issue, kubelet crash, or resource exhaustion.
ā”ļø Why is EKS failing to pull Docker images?
Reason: Wrong ECR permissions or missing imagePullSecrets.
ā”ļø Why are CloudFormation stacks stuck in UPDATE_ROLLBACK_FAILED?
Reason: Resource dependencies or failed deletes.
ā”ļø Why is the load balancer showing unhealthy targets?
Reason: Wrong health check path or app not responding on target port.
ā”ļø Why is my container restarting frequently?
Reason: App crash or resource limits exceeded.
ā”ļø Why are Prometheus alerts firing repeatedly?
Reason: Incorrect threshold or noisy rules.
ā”ļø Why is the CI/CD pipeline not deploying to production automatically?
Reason: Approval gates or permission issues.
ā”ļø Why is SSL/TLS certificate expired or invalid?
Reason: Missed renewal automation.
ā”ļø Why are CloudWatch alarms not triggering even when metrics exceed threshold?
Reason: Wrong metric namespace or missing data points.
ā”ļø Why is my infrastructure cost increasing unexpectedly?
Reason: Idle EC2/RDS, orphaned EBS, or unused load balancers.
š± š
šØš„š„šØš° š¦š šØš§ šš¢ššš®š ššØš« š¦šØš«š šššÆšš©š¬ ššš¬šØš®š«ššš¬ : https://github.com/NotHarshhaa
š± š
šØš„š„šØš° @devopsclassroom ššØš« š¦šØš«š š¬š®šš” ššØš§ššš§š šš«šØš®š§š šš„šØš®š & šššÆšš©š¬!!! // ššØš¢š§ ššØš« šššÆšš©š¬ šššš¬: @devopsdocs | 2 309 |
| 5 | ā”ļø New DevOps Project Release! ā¬
ļø
š DevOps Project-38: End-to-End Deployment of a FullStack Blogging Application with AWS EKS, Terraform, Jenkins, SonarQube, Nexus, Trivy & Prometheus/Grafana š
We built and deployed a production-ready Full-stack Blogging Application powered by Spring Boot and fully automated with modern DevOps tools. šāØ
š¹ Key Features
ā
Create, Edit & Delete Blog Posts
ā
RESTful API with Spring Boot (Java)
ā
Static Code Analysis with SonarQube
ā
Security & Vulnerability Scanning via Trivy
ā
Automated CI/CD Pipeline with Jenkins
ā
Secure Artifact Management using Nexus
ā
Deployed on AWS EKS with Kubernetes
ā
Containerized using Docker
ā
Monitoring with Prometheus & Grafana
ā
Email Notifications on Deployment š©
š” End-to-end setup: Terraform + Jenkins + Kubernetes + AWS
This project demonstrates how to combine automation, security, and scalability into a seamless DevOps pipeline.
ā”ļø A great reference for anyone exploring Cloud-Native DevOps & Spring Boot Apps!
š± GitHub: https://github.com/NotHarshhaa/DevOps-Projects/tree/master/DevOps-Project-38
ā View on Web: https://projects.prodevopsguytech.com/blog/DevOps-Project-38
Check it out & give it a āļø if it helps you!
#DevOps #AWS #EKS #Kubernetes #CICD #FullStack #CloudNative #Jenkins #Terraform #Docker
š± š
šØš„š„šØš° @prodevopsguy ššØš« š¦šØš«š š¬š®šš” ššØš§ššš§š šš«šØš®š§š šš„šØš®š & šššÆšš©š¬!!! // ššØš¢š§ ššØš« šššÆšš©š¬ šššš¬: @devopsdocs | 263 |
| 6 | š ššš¬ššš« ššš«š«šššØš«š¦ š¢š§ šš ššš²š¬! š
Are you looking to get hands-on with Terraform and Infrastructure as Code (IaC)? We created a 14-day learning plan covering everything from the basics to advanced concepts.
Each day, we shared a deep dive into a new Terraform topic, packed with practical examples, best practices, and troubleshooting tips.
Now, We compiling all 14 articles into one place to help you on your Terraform journey!
š„ šššš ššš„šØš° šš«šš¢šš„šš¬:(in order)
1. Introduction to Terraform - https://lnkd.in/guZkiFBP
2. Basics of Terraform - https://lnkd.in/gppbq8ed
3. Variables and Outputs - https://lnkd.in/gJXb2u3D
4. Terraform State Management - https://lnkd.in/gDepmUdD
5. Terraform Module - https://lnkd.in/gSZMZ-7F
6. Provisioners and Meta-Arguments - https://lnkd.in/g5zFxTb3
7. Mini Project - https://lnkd.in/gtET_p5v
8. Terraform Cloud and Workspaces - https://lnkd.in/gdBdB_vP
9. Terraform with CI/CD - https://lnkd.in/giZgf8QF
10. Handling Secrets and Security in Terraform - https://lnkd.in/gywgK-h3
11. Debugging and Troubleshooting Terraform - https://lnkd.in/gWX-3QTw
12. Terraform Best Practices - https://lnkd.in/g7iDVnfP
13. Terraform With Kubernetes - https://lnkd.in/gEziumJK
14. Terraform Enterprise, Sentinel, Custom Providers - https://lnkd.in/g_FNYS9c
š šššÆš & šš”šš«š this post if you're learning Terraform!
š± š
šØš„š„šØš° š¦š šØš§ šš¢ššš®š ššØš« š¦šØš«š šššÆšš©š¬ ššš¬šØš®š«ššš¬ : https://github.com/NotHarshhaa
š± š
šØš„š„šØš° @devopsclassroom ššØš« š¦šØš«š š¬š®šš” ššØš§ššš§š šš«šØš®š§š šš„šØš®š & šššÆšš©š¬!!! // ššØš¢š§ ššØš« šššÆšš©š¬ šššš¬: @devopsdocs | 2 206 |
| 7 | š£ 15 š“ššš-šÆššš š¶ššš šŗššššš š»šššš šš šŗššššš šššš š²ššššššššš šŖššššššš šāļøš
From code to runtime, securing every layer of your container stack is crucial!
If you're serious about Kubernetes security, these 15 open-source tools will help you shift left, enforce policies, reduce attack surface, and monitor runtime in cloudnative ecosystem š
ā¬ļø Here's your go-to toolbox:
š„ Trivy ā All-in-one vulnerability & IaC misconfiguration scanner.
š https://lnkd.in/gZM9HtwR
š„ Kyverno ā K8s-native policy engine to validate/mutate resources via CRDs.
š https://lnkd.in/gCE3Jwx2
š„ Kubescape ā Full-stack K8s posture & compliance scanner (CIS, NSA, etc).
š https://lnkd.in/g3q4HMTm
š„ kube-hunter ā Actively hunts for security issues in your cluster.
š https://lnkd.in/gRZNeMT7
š„ Falco ā Detects abnormal behavior in containers & K8s at runtime.
š https://lnkd.in/gEYi5SX2
š„ kube-bench ā Checks cluster compliance with CIS K8s benchmarks.
š https://lnkd.in/ev8zXhmg
š„ Open Policy Agent (OPA) ā Flexible, unified policy engine with Rego.
š https://lnkd.in/g4mDGaKJ
š„ Gatekeeper ā Admission controller that enforces OPA policies in K8s.
š https://lnkd.in/gxXG_URC
š„ DockerSlim ā Minifies container images without breaking functionality.
š https://lnkd.in/gEhxHZYd
š„ Terrascan ā Scans IaC for security flaws (Terraform, Helm, etc).
š https://lnkd.in/gxmzE-nm
š„ kubeaudit ā Audits Kubernetes clusters against common security controls.
š https://lnkd.in/ezijRDqG
š„ kubeclarity ā Software composition analysis for containers & images.
š https://lnkd.in/gHb5RXXU
š„ krakend-waf ā Lightweight API gateway + Web Application Firewall for services.
š https://lnkd.in/gBG7_mTu
š„ sigstore/cosign ā Sign & verify container images to secure your software supply chain.
š https://lnkd.in/gvzmb5fH
š„ Chainguard/reencrypt ā Secures your container registries by re-signing images.
š https://lnkd.in/ghhrGVfu
š± š
šØš„š„šØš° š¦š šØš§ šš¢ššš®š ššØš« š¦šØš«š šššÆšš©š¬ ššš¬šØš®š«ššš¬ : https://github.com/NotHarshhaa
š± š
šØš„š„šØš° @devopsclassroom ššØš« š¦šØš«š š¬š®šš” ššØš§ššš§š šš«šØš®š§š šš„šØš®š & šššÆšš©š¬!!! // ššØš¢š§ ššØš« šššÆšš©š¬ šššš¬: @devopsdocs | 1 969 |
| 8 | šØ Kubernetes Troubleshooting Cheatsheet š
1ā£) Confirm cluster and namespace
ā«ļø Check current context: kubectl config current-context
ā«ļø List contexts: kubectl config get-contexts
ā«ļø Switch context: kubectl config use-context <name>
ā«ļø List namespaces or pods in a namespace: kubectl get ns and kubectl get pods -n <namespace>
2ā£) Get the big picture: nodes, pods and events
š“ Nodes: kubectl get nodes
š“ All pods: kubectl get pods -A
š“ All deployments: kubectl get deployments -A
š“ Recent events: kubectl get events --sort-by=.metadata.creationTimestamp -A
3ā£) Inspect the failing pod
š£ Describe the pod: kubectl describe pod <pod> -n <ns>
š£ View logs: kubectl logs <pod> -n <ns>
š£ Logs for a specific container: kubectl logs <pod> -c <container> -n <ns>
š£ Open a shell inside the pod: kubectl exec -it <pod> -n <ns> -- /bin/sh
4ā£) Check probes and health
š¢ See readiness and liveness probe info in kubectl describe output
š¢ Test the probe endpoint from inside the pod:
š¢ kubectl exec -it <pod> -n <ns> -- curl -sv localhost:<port>/health
š¢ If probes fail, consider adjusting timeouts or probe settings
5ā£) Rollouts, history and recovery
š Check rollout status: kubectl rollout status deployment/<name> -n <ns>
š View rollout history: kubectl rollout history deployment/<name> -n <ns>
š Rollback if needed: kubectl rollout undo deployment/<name> -n <ns>
6ā£) Networking and services
š¤ List services: kubectl get svc -n <ns>
š¤ Check endpoints: kubectl get endpoints -n <ns>
š¤ DNS test from a pod: kubectl exec -it <pod> -n <ns> -- nslookup <service>
š¤ Quick local test with port-forward: kubectl port-forward svc/<svc> 8080:80 -n <ns>
7ā£) Storage: PVC and PV checks
š” List PVCs: kubectl get pvc -n <ns>
š” Describe a PVC: kubectl describe pvc <pvc> -n <ns>
š” Look for mount errors in the pod describe output
8ā£) Resources, logs and quick fixes
šµ Resource usage: kubectl top nodes and kubectl top pods -n <ns>
šµ Tail logs across pods with tools like stern or kubetail
šµ Restart deployment: kubectl rollout restart deployment/<name> -n <ns>
šµ Recreate a pod safely: kubectl delete pod <pod> -n <ns> (controller will recreate it)
š± š
šØš„š„šØš° š¦š šØš§ šš¢ššš®š ššØš« š¦šØš«š šššÆšš©š¬ ššš¬šØš®š«ššš¬ : https://github.com/NotHarshhaa
š± š
šØš„š„šØš° @devopsclassroom ššØš« š¦šØš«š š¬š®šš” ššØš§ššš§š šš«šØš®š§š šš„šØš®š & šššÆšš©š¬!!! // ššØš¢š§ ššØš« šššÆšš©š¬ šššš¬: @devopsdocs | 2 182 |
| 9 | š± How Kubernetes Works: End-to-End Explained Simply
1. Cluster Setup
You begin by setting up a Kubernetes cluster, which includes a control plane and one or more worker nodes.
2. Define Your Application
You describe your application using YAML configuration filesāthese define resources like Deployments, Services, ConfigMaps, etc.
3. Apply Configuration
You apply the YAML files using kubectl apply -f <file>. This sends your request to the API Server, which is the central management component of the cluster.
4. API Server Processing
Kubernetes processes the request and decides:
Whether to create a new resource (e.g., Pod, Deployment)
Update or delete an existing resource
Or trigger a controller to take action
5. Store in etcd
The API Server stores the resourceās specification in etcd, the clusterās key-value store and source of truth.
6. Controller Detects Change
A relevant controller (e.g., ReplicaSet Controller) detects the new spec and responds accordingly.
7. Resource Creation
The controller initiates resource creation, instructing the scheduler to deploy Pods.
8. Scheduling
The scheduler assigns Pods to appropriate nodes based on current resource availability and scheduling policies.
9. Kubelet Interaction
Once assigned, the Kubelet on the target node receives the Pod specification and requests the container runtime to start the container.
10. Container Deployment
The container runtime pulls the required image, creates the container, and runs it inside the Pod.
11. Network Assignment
The CNI plugin (Container Network Interface) assigns a network identity to the Pod. It gets an IP address and joins the cluster network.
12. Service Routing with kube-proxy
kube-proxy sets up the routing rules to allow Services to forward traffic to the appropriate and healthy Pods.
š± š
šØš„š„šØš° š¦š šØš§ šš¢ššš®š ššØš« š¦šØš«š šššÆšš©š¬ ššš¬šØš®š«ššš¬ : https://github.com/NotHarshhaa
š± š
šØš„š„šØš° @devopsclassroom ššØš« š¦šØš«š š¬š®šš” ššØš§ššš§š šš«šØš®š§š šš„šØš®š & šššÆšš©š¬!!! // ššØš¢š§ ššØš« šššÆšš©š¬ šššš¬: @devopsdocs | 2 062 |
| 10 | š¢ DevOps in 2025: Winning Skills and Real Trends
Two years ago, DevOps was a high-demand field. In 2025, itās the backbone of every digital transformationāsupercharged by cloud, automation, and now, AI.
Here's what caught my attention š
š DevOps market is projected to expand from $13.2 billion in 2024 to an impressive $81.1 billion by 2028
š From specialized approach to mainstream strategy: Its adoption soared from 33% of companies in 2017 to an estimated 80% in 2024.
Let me break down what's really happening out there and how you can ride this waveāwhether you're just starting or gunning for that architect role.
š šŖšµš¶š°šµ š§š²š°šµš»š¼š¹š¼š“š¶š²š šš°ššš®š¹š¹š šš¼šŗš¶š»š®šš² šš¼šÆ š£š¼ššš¶š»š“š?
Based on aggregated data from 2024-2025 DevOps job postings, hereās the tech that consistently tops job requirements:
1 - Terraform 88% (+9%)
2 - Python 80% (+8%)
3 - Kubernetes 76% (+6%)
4 - AWS 72% (ā3%)
5 - Jenkins 74% (+6%)
6 - Docker 68% (+3%)
7 - Azure 60% (+6%)
8 - Git/GitHub 60% (+2%)
....
19 - Golang 18% (+13%)
The pattern is clear: Infrastructure as Code is king, container orchestration is everywhere, and you better know your way around multiple clouds.
Golang is the surprise breakout.
š šŖšµš ššš²šæšš¼š»š²'š ššš»šš¶š»š“ š³š¼šæ šš²šš¢š½š ššæš°šµš¶šš²š°šš
ā”ļø Cloud-native expertise is ānon-negotiableā: 83% of organizations now use multi-cloud approaches. If you can juggle AWS, Azure, AND Kubernetes? You're golden.
ā”ļø Architects and senior engineers who bridge DevOps, cloud, and AI lead the next evolution. These are the people building scalable, secure, AI-ready infrastructureāroles that are multiplying fast.
ā”ļø Platform engineering is having a moment: Everyone wants internal platforms that make their developers' lives easier.
š¤ šš ššš»'š šš¶š¹š¹š¶š»š“ šš²šš¢š½š (šš'š š š®šøš¶š»š“ šš šš²ššš²šæ)
ā
AI/ML is making DevOps smarterāthink smart incident response, predictive analytics, and self-healing infrastructure that fixes itself.
āļø But success still comes down to knowing your foundations: DevOps, cloud architecture, and scripting.
š¦ šš®šæš²š²šæ šš±šš¶š°š²: ššµš¼š¼šš² ššæš²š®š±ššµ, š§šµš²š» šš¼ šš²š²š½
- Get dangerous with 2 automation tools (Terraform + K8s is the combo right now)
- Go deep with AWS or Azure, but stay curious about the others
- Python is your Swiss Army knifeālearn it, love it
- Don't sleep on AI tools, but master your CI/CD and container game first
š± š
šØš„š„šØš° š¦š šØš§ šš¢ššš®š ššØš« š¦šØš«š šššÆšš©š¬ ššš¬šØš®š«ššš¬ : https://github.com/NotHarshhaa
š± š
šØš„š„šØš° @devopsclassroom ššØš« š¦šØš«š š¬š®šš” ššØš§ššš§š šš«šØš®š§š šš„šØš®š & šššÆšš©š¬!!! // ššØš¢š§ ššØš« šššÆšš©š¬ šššš¬: @devopsdocs | 2 172 |
| 11 | š± 30 Kubernetes Tutorials
Each one focused on a key concept, tool, or best practice.
1. Kubernetes Architecture - https://lnkd.in/gSB2GyXp
2. High Availability - https://lnkd.in/gzYd97Ee
3. Best Practices (Design & Setup) - https://lnkd.in/gPUx8uNP
4. Minikube - https://lnkd.in/gAgcw2q6
5. Kubeadm - https://lnkd.in/gkCQAajB
6. Kubeconfig File - https://lnkd.in/gEnUdrj7
7. Vagrant VMs - https://lnkd.in/gtKNepyc
8. eksctl - https://lnkd.in/ghUDuDQx
9. kubectl - https://lnkd.in/gzbd7263
10. Kubernetes Cluster - https://lnkd.in/giaAps_S
11. Etcd - https://lnkd.in/g9icGcME
12. Kubernetes Pod - https://lnkd.in/gtGGyJR7
13. Init Containers - https://lnkd.in/gPaDpyUP
14. Daemonset - https://lnkd.in/gAM7pxrK
15. Pod Lifecycle - https://lnkd.in/gtwBJr3w
16. Kubernetes Ingress - https://lnkd.in/gN2RD3ei
17. Nginx Ingress - https://lnkd.in/ghvGtGS3
18. K8s YAML Manifests - https://lnkd.in/gJQ-pPJE
19. Alert Manager - https://lnkd.in/gHM6DnFE
20. EFK Stack - https://lnkd.in/gSC6bj37
21. K8s Logging - https://lnkd.in/g8VG6nti
22. Kustomize - https://lnkd.in/gziADVvS
23. Sealed Secrets - https://lnkd.in/gceD9mpU
24. Docker Image In K8s Pod - https://lnkd.in/g4qUgj4E
25. Jenkins Build Agents - https://lnkd.in/gf9R-qin
26. Kustomize Secret - https://lnkd.in/gW_eugbf
27. Deploy Argo CD - https://lnkd.in/gHUMhS7Q
28. Install Helm for K8s - https://lnkd.in/gn2DHbRz
29. MongoDB - https://lnkd.in/ga8DmNKb
30. Hashicorp Vault - https://lnkd.in/gB7EZYJT
š± š
šØš„š„šØš° š¦š šØš§ šš¢ššš®š ššØš« š¦šØš«š šššÆšš©š¬ ššš¬šØš®š«ššš¬ : https://github.com/NotHarshhaa
š± š
šØš„š„šØš° @devopsclassroom ššØš« š¦šØš«š š¬š®šš” ššØš§ššš§š šš«šØš®š§š šš„šØš®š & šššÆšš©š¬!!! // ššØš¢š§ ššØš« šššÆšš©š¬ šššš¬: @devopsdocs | 2 151 |
| 12 | ā”ļø Tech Mahindra - DevOps Engineer interview Questions ā¬
ļø
ā”ļø Linux & Shell Scripting
⢠How do you check running processes in Linux?
⢠Whatās the difference between top, htop, and ps?
⢠How to schedule a cron job every 15 minutes?
⢠What is the difference between hard link and soft link?
⢠How to find which process is using high memory?
ā”ļø Docker & Containers
⢠What is the difference between an image and a container?
⢠How to persist data across container restarts?
⢠What is the use of docker-compose?
⢠How do you check logs of a specific container?
⢠How to expose a container to the outside world?
ā”ļø Jenkins & CI/CD
⢠Explain a typical CI/CD pipeline youāve worked on.
⢠Difference between Declarative and Scripted pipeline?
⢠How to trigger a Jenkins job when code is pushed to GitHub?
⢠How do you handle secrets in Jenkins pipelines?
⢠How to pass parameters between stages?
ā”ļø Git & Version Control
⢠How do you resolve merge conflicts?
⢠Difference between git pull, git fetch, and git clone?
⢠Use case of git stash.
⢠What is the .gitignore file and how does it work?
⢠Whatās the difference between git rebase and git merge?
ā”ļø Terraform & Infrastructure as Code
⢠How does Terraform maintain the state of resources?
⢠What are Terraform modules?
⢠How to manage sensitive variables in Terraform?
⢠What is the purpose of terraform validate and terraform fmt?
⢠How do you handle provisioning in different environments (dev/stage/prod)?
ā”ļø AWS & Cloud
⢠How to troubleshoot SSH issues in an EC2 instance?
⢠What is the difference between EBS, S3, and EFS?
⢠How does IAM policy differ from IAM role?
⢠Difference between security group and NACL?
⢠How to set up auto-scaling for an application?
ā”ļø Kubernetes (K8s)
⢠Difference between Deployment and StatefulSet?
⢠What is a DaemonSet used for?
⢠How does a Service in Kubernetes work?
⢠What is a ConfigMap vs Secret?
⢠What are taints and tolerations?
⢠How do liveness and readiness probes work?
⢠How to troubleshoot a pod stuck in CrashLoopBackOff?
š± š
šØš„š„šØš° š¦š šØš§ šš¢ššš®š ššØš« š¦šØš«š šššÆšš©š¬ ššš¬šØš®š«ššš¬ : https://github.com/NotHarshhaa
š± š
šØš„š„šØš° @devopsclassroom ššØš« š¦šØš«š š¬š®šš” ššØš§ššš§š šš«šØš®š§š šš„šØš®š & šššÆšš©š¬!!! // ššØš¢š§ ššØš« šššÆšš©š¬ šššš¬: @devopsdocs | 2 343 |
| 13 | ⨠Interview Questions for 18 LPA - Cloud & DevOps Engineer Role ā
ā”ļøL1 & L2 level questions related to AWS, Terraform, Kubernetes, Docker, Git
ā”ļøLevel 1 -
1. cicd workflow, what kind of pipeline
2. use of webhook
3. purpose of webhook
4. stages of pipeline...
5. shared libraries in jenkins?
6. how do we define shared libraries?
7. how are shared libraries written?
8. how do you define a pipeline and call it?
9. what kind of app you deploy on the pipeline?
10. basic structure, folder structure of helm?
11. what command are you using deployment in helm
12. in the Jenkins pipeline, the pipeline is running
successfully but the build is not happening, what are the
issues?
13. kubernetes, what are the errors you are getting, why
they come and how you resolve?
14. explain the crash loop back off,
15. image pull error?
16. command to go inside a pod?
17. how can you create the kubernetes class?
18. what are the steps to create the cluster?
19. what is the master node and other node?
20. code to create a cluster using terraform?
21. stages in docker images?
22. DB entry point, CMD
23. why do we use entrypoint, CMD
24. DB ec2, eks, ecs
25. command to connect ecs
26. which tool are you using for deployment?
27. which registry for storing the docker images?
ā”ļøLevel 2 -
1. branching strategy?
2. your release branch will break, then how u will avoid this kind of issues, then how do you merge?
3. in production having some bugs, how will you resolve?
4. typical deployment flow?
5. cicd workflow?
6. how do we do a full quality check?
7. jenkins file, different stages...
8. shared libraries in jenkins file?
9. typical structure of shared libraries...
10. are you aware of security scanning tools?
11. how do you pass the environment variables on docker
build command.
12. what services do you use for storing the images?
13. DB, how do you establish the connection?
14. how do you scan the images at the registry level?
15. any extension you are using for image scanning?
16. authentication of eks cluster?
17. storing the secrets?
18. how to create lambda function, how it's taking the
artifacts.
19. options on lambda to push the artifacts?
20. what is email signing and helm chart signing?
21. which tool for signing the helm chart?
š± š
šØš„š„šØš° š¦š šØš§ šš¢ššš®š ššØš« š¦šØš«š šššÆšš©š¬ ššš¬šØš®š«ššš¬ : https://github.com/NotHarshhaa
š± š
šØš„š„šØš° @devopsclassroom ššØš« š¦šØš«š š¬š®šš” ššØš§ššš§š šš«šØš®š§š šš„šØš®š & šššÆšš©š¬!!! // ššØš¢š§ ššØš« šššÆšš©š¬ šššš¬: @devopsdocs | 2 325 |
| 14 | āļø Deloitte Interview Experience
š£Position : DevOps Engineer
š£š„š¼šš»š± š: š§š²š°šµš»š¶š°š®š¹ š¦š°šæš²š²š»š¶š»š“
1. Explain the CI/CD workflow you follow and the kind of pipeline you use. How do you define and invoke pipelines in Jenkins?
2. What are shared libraries in Jenkins, and how are they written and defined?
3. What kind of applications do you deploy using Jenkins pipelines, and what deployment tools do you use?
4. If the Jenkins pipeline runs but the build doesnāt happen, what possible issues could be causing it?
5. What is the purpose of a webhook, and how is it used in a CI/CD pipeline?
6. How do you create and manage Kubernetes clusters (using tools like Terraform), and what are the master and worker nodes?
7. What are common Kubernetes errors youāve faced (like CrashLoopBackOff, ImagePullError), and how did you resolve them?
8. What is the command to access a pod and how can you define or create a Kubernetes class or object?
9. Explain the folder structure of a basic Helm chart. What commands do you use to deploy with Helm?
10. What are the stages in a Docker image build? Why do we use ENTRYPOINT and CMD instructions?
11. How do you manage and connect services like DBs, EC2, EKS, or ECS? Include the command to connect to ECS.
12. Which container registry do you use for storing Docker images?
š£š„š¼šš»š± š®: šš»-š±š²š½ššµ š§š²š°šµš»š¶š°š®š¹ š¦š°šæš²š²š»š¶š»š“
1. What branching strategy do you follow, and how do you handle merges to avoid breaking the release branch? If a bug appears in production, whatās your approach to resolving it?
2. Describe your typical deployment flow and CI/CD workflow. What stages do you define in your Jenkins pipeline, and how do you ensure full quality checks during deployment?
3. How do you use Jenkins shared libraries? Explain their typical structure and how they are integrated into your Jenkinsfiles.
4. Are you aware of security scanning tools? How do you scan Docker imagesāboth during build and at the registry level? Are you using any extensions or tools for image scanning?
5. How do you pass environment variables during Docker build commands? What services do you use for storing Docker images?
6. How do you establish a connection with databases in your deployments or infrastructure setup?
7. How do you handle authentication for EKS clusters and store secrets securely in your environment?
8. How do you create AWS Lambda functions and manage the artifacts for deployment? What options do you use to push artifacts to Lambda?
9. What is email signing and Helm chart signing? Which tools do you use to sign Helm charts?
š£š„š¼šš»š± šÆ: šš š„š¼šš»š± (šš¶šæš¶š»š“ š š®š»š®š“š²šæ)
1. Project experiences.
2. Day-to-day responsibilities.
3. Light behavioral questions.
4. Teamwork & Culture Fit questions.
š± š
šØš„š„šØš° š¦š šØš§ šš¢ššš®š ššØš« š¦šØš«š šššÆšš©š¬ ššš¬šØš®š«ššš¬ : https://github.com/NotHarshhaa
š± š
šØš„š„šØš° @devopsclassroom ššØš« š¦šØš«š š¬š®šš” ššØš§ššš§š šš«šØš®š§š šš„šØš®š & šššÆšš©š¬!!! // ššØš¢š§ ššØš« šššÆšš©š¬ šššš¬: @devopsdocs | 2 279 |
| 15 | ā¹ļø PWC Interview experience for DevOps Engineer role
ā
Round 1: Screening Round (30 minutes)
- Walk me through your current project architecture and your role in it.
- Which DevOps tools have you worked with in the last 2 years?
- What AWS services have you used in production?
- How do you expose a Kubernetes application to external traffic?
- What is the purpose of a NAT Gateway?
- How do you check running processes in Linux?
- What command would you use to find files larger than 100MB?
- What is the difference between Deployment and StatefulSet in Kubernetes?
- What is a ConfigMap, and how is it different from a Secret?
- How do you check network connectivity between two servers?
- Describe your experience with CI/CD pipelines.
ā
Round 2: Technical Round (60 minutes)
- You have an application in Account A that needs to access an S3 bucket in Account B. How would you configure this?
- Write a Dockerfile for a Node.js application with multi-stage builds.
- How do you handle Terraform state file corruption?
- Your EC2 instance in a private subnet needs to download packages without NAT Gateway. What alternatives exist?
- How do you debug a container that has exited?
- You need to import an existing AWS VPC into Terraform. What are the steps?
- How would you implement blue-green deployment in Kubernetes?
- How do you manage secrets in Terraform without hardcoding them?
- What's the difference between COPY and ADD commands in Dockerfile?
- How would you implement cross-account resource provisioning using Terraform?
- How would you handle secrets in a Docker container for a PHP application connecting to MySQL?
- An S3 bucket was created via Terraform, but someone manually added a policy. How do you handle this drift?
- How do you implement network policies to restrict pod-to-pod communication in Kubernetes?
- Write a Python script to backup all files older than 30 days from a directory.
- Your company's cloud costs are increasing rapidly. - How would you approach cost optimization without impacting performance?
- How would you set up geolocation-based routing using AWS services?
- A critical production Kubernetes cluster is experiencing multiple issues. Pods are stuck in ImagePullBackOff, some pods are being evicted, and users are reporting 503 errors from the application. What troubleshooting process will you follow, and how can to avoid this in the future?
ā
Round 3: Behavioral Round
- How do you handle a situation where you're asked to work on a technology you have no experience with?
- Describe a time when you had to work with tight deadlines and limited resources.
- Tell me about a mistake you made in production and how you handled it.
- Describe the most challenging technical problem you've solved in your career.
- How would you convince stakeholders to adopt a new technology or process?
- Tell me about a time when you had to learn a new tool quickly to solve a business problem.
āļø Follow @DevOpsClassroom for more DevOps Journey and Learn step by step, share with your friends and people for helping out together. | 2 469 |
| 16 | ā 10 FREE DevOps labs that helped to stop feeling stuck ā and start feeling unstoppable ā¬ļø
1ļøā£. KodeKloud Engineer Platform
Simulate real-world tasks. Get āpromotedā from SysAdmin ā DevOps Engineer ā Architect!
ā© https://lnkd.in/g3G_vMNU
2ļøā£. DevOps Labs Collection
Hands-on labs across CI/CD, monitoring, automation ā no credit card needed.
ā© https://lnkd.in/g8HVvigm
3ļøā£. Kubernetes Lab
Deploy clusters, manage apps, master YAML.
ā© https://lnkd.in/guWWzCeh
4ļøā£. Docker Lab
Pull, build, and run real containers.
ā© https://lnkd.in/gFyeEnrT
5ļøā£. Git Lab
Master Git flows, branching, merges ā fluency guaranteed.
ā© https://lnkd.in/grP6dYfa
6ļøā£. Terraform Lab
Write Infrastructure as Code. Deploy AWS resources without fear.
ā© https://lnkd.in/gmhTZPdR
7ļøā£. Linux Lab
Learn Linux basics ā 90% of DevOps work happens here.
ā© https://lnkd.in/g92cPyYE
8ļøā£. Ansible Lab
Automate server setups like a pro.
ā© https://lnkd.in/gVGdesdB
9ļøā£. Jenkins Lab
Build real CI/CD pipelines with hands-on Jenkins experience.
ā© https://lnkd.in/gPdeqhYZ
1ļøā£0ļøā£. Python Lab
Practice automation scripts and cloud operations.
ā© https://lnkd.in/g-gM9QmM
š± Join the channel now and start your DevOps journey with confidence:
š t.me/DevOpsClassroom | 2 645 |
| 17 | š„ 5 DevOps projects that will help you land your first job
(Build a complete DevOps Portfolio)
š Project 1: Deploy an app to AWS EKS with ingress controller in three tier vpc and expose the app via application load balancer.
š https://lnkd.in/di5W52iD
š Project 2: Full end-to-end CI/CD pipeline. Containerize and deploy the app to k8s using Helm charts and ArgoCD
š https://lnkd.in/dRqXFs2a
š Project 3: Complete Gitlab CI/CD pipeline. Build, test, scan and deploy a board game
š https://lnkd.in/dHZprJC4
š Project 4: End-to-End Terraform project creating VPC, route tables, RDS, State Management etc.
š https://lnkd.in/dhpNEE63
š Project 5: End-to-end monitoring an app using Prometheus and Grafana.
š https://lnkd.in/d9tfAW3c
These projects will demonstrate your DevOps expertise in the interviews,
and land your first job.
š± Join the channel now and start your DevOps journey with confidence:
š t.me/DevOpsClassroom | 2 691 |
| 18 | ā” ChatGPT Prompts for DevOps and Cloud Learners ā¬ļø
We see too many struggling with even basic prompts.
Here we created this to help you.
š Note:
ChatGPT isn't a replacement for official documentation.
It can hallucinate, treat it as your guide.
š± š
šØš„š„šØš° @prodevopsguy ššØš« š¦šØš«š š¬š®šš” ššØš§ššš§š šš«šØš®š§š šš„šØš®š & šššÆšš©š¬!!! // ššØš¢š§ ššØš« šššÆšš©š¬ šššš¬: @devopsdocs | 467 |
| 19 | ā”ļøJenkins Tutorial For Beginners: 21+ Practical Guides
https://lnkd.in/deezunqE
ā”ļøJenkins Architecture Explained - Beginners Guide
https://lnkd.in/dcE49EXw
ā”ļøHow To Setup Highly Available Jenkins
https://lnkd.in/dTbnsg6s
š Jenkins Administration Tutorials
ā”ļøInstall Jenkins on Ubuntu in 10 Easy Steps
https://lnkd.in/dUDGXc34
ā”ļøHow to Setup Jenkins Agent Using SSH [Password & SSH Key]
https://lnkd.in/d4iKkjs7
ā”ļøHow to Configure SSL on Jenkins Server
https://lnkd.in/d9UpFgiR
ā”ļøHow To Run Jenkins on Port 80: 4 Different Methods Explained
https://lnkd.in/dpexCUub
ā”ļøHow To Backup Jenkins Data and Configurations
https://lnkd.in/dePTnDGX
ā”ļøHow to Setup Custom UI Theme For Jenkins
https://lnkd.in/dxdqcjWJ
ā”ļøJenkins Setup Using AWS Autoscaling Group, Load Balancer & EFS
https://lnkd.in/dizsnNjZ
š Jenkins Pipeline Tutorials
ā”ļøJenkins Pipeline Tutorial For Beginners
https://lnkd.in/dryfkdVy
ā”ļøJenkins Shared Library Tutorial For Beginners
https://lnkd.in/dsAgwHFp
ā”ļøHow to Use Parameters in Jenkins Declarative Pipeline
https://lnkd.in/d3UgPxRA
š Jenkins CI/CD Tutorials
ā”ļøJava Continuous Integration with Jenkins - Beginners Guide
https://lnkd.in/d9Eujsp6
ā”ļøJenkins Automated Build Trigger On Github Pull Request
https://lnkd.in/dFkNt3gm
ā”ļøHow To Build Docker Image In Kubernetes Pod
https://lnkd.in/dfxkmf_v
ā”ļøHow to Setup Jenkins Email Notification (Detailed Guide)
https://lnkd.in/dUbxPqvb
š± š
šØš„š„šØš° @prodevopsguy ššØš« š¦šØš«š š¬š®šš” ššØš§ššš§š šš«šØš®š§š šš„šØš®š & šššÆšš©š¬!!! // ššØš¢š§ ššØš« šššÆšš©š¬ šššš¬: @devopsdocs | 462 |
| 20 | š Master DevOps & Cloud ā š± All the Right Repos in One Place!
ā”ļø DevOps Repositories Central
š https://repos.prodevopsguytech.com
Looking to become a Professional DevOps Engineer?
Start with the most useful GitHub repositories ā all curated for learning, practice, and real-world implementation.
š” What's inside?
āļø DevOps & Cloud Learning Paths
āļø Hands-On Labs & Projects
āļø Infrastructure as Code (Terraform, Ansible, etc.)
āļø CI/CD Pipelines
āļø Kubernetes & Docker Repos
āļø Interview Prep Resources
...and a lot more!
ā Everything you need ā organized, practical, and beginner-friendly. Perfect for leveling up or switching into DevOps/Cloud roles.
š± š
šØš„š„šØš° @prodevopsguy ššØš« š¦šØš«š š¬š®šš” ššØš§ššš§š šš«šØš®š§š šš„šØš®š & šššÆšš©š¬!!! // ššØš¢š§ ššØš« šššÆšš©š¬ šššš¬: @devopsdocs | 383 |
