How to Become a DevOps Engineer in 2025

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Jumping into DevOps, System Engineering, or becoming an SRE (Site Reliability Engineer) requires a blend of foundational knowledge and practical skills. Here’s a breakdown of the prerequisites and technical knowledge you should aim to master:

1. Understanding Operating Systems and Networking

Why?

You’ll be managing servers, cloud instances, and networking setups. Knowing how systems work under the hood is crucial.

✅ Linux Fundamentals (Most DevOps work is Linux-based)

  • Shell scripting (Bash, Zsh)
  • File systems, permissions, and process management
  • User management and package installations
  • Networking commands (ping, netstat, ifconfig, traceroute)

✅ Networking Basics

  • TCP/IP, DNS, HTTP/HTTPS
  • Ports, firewalls, VPNs
  • Load Balancing, Reverse Proxies (e.g., NGINX)
  • Troubleshooting connectivity issues

2. Version Control Systems (VCS)

Why?

Collaborating with developers and managing infrastructure as code requires tracking changes efficiently.

✅ Git

  • Cloning, branching, merging, pull requests
  • GitHub, GitLab, Bitbucket

3. Programming and Scripting

Why?

Automation is key in DevOps. You’ll often write scripts to automate tasks.

✅ Languages to Focus On

  • Bash/Shell scripting (must-have)
  • Python (preferred for automation and tooling)
  • YAML/JSON (for configuration files like Kubernetes, Ansible, etc.)

4. Cloud Platforms

Why?

Cloud is the backbone of modern DevOps and SRE practices.

✅ Popular Cloud Providers

  • AWS (Amazon Web Services) [Most Common]
  • Microsoft Azure
  • Google Cloud Platform (GCP)
  • Basics of cloud services: Compute (EC2), Storage (S3), Networking (VPC)

5. Infrastructure as Code (IaC)

Why?

Infrastructure automation is a core DevOps principle.

✅ Tools to Learn

  • Terraform (Widely Used)
  • CloudFormation (AWS)
  • ARM Templates (Azure)

6. Containerization and Orchestration

Why?

Microservices and cloud deployments often rely on containers.

✅ Docker – Packaging applications into containers.

  • Building images, Dockerfiles
  • Docker Compose

✅ Kubernetes (K8s) – Orchestrating containerized applications.

  • Deployments, Pods, Services, ConfigMaps, Helm Charts

7. Configuration Management & Automation

Why?

Automating server setup and configuration is critical for scalability.

✅ Popular Tools

  • Ansible (Agentless, simple to start)
  • Puppet
  • Chef

8. CI/CD Pipelines

Why?

Automating build, test, and deployment processes speeds up development.

✅ Key Tools

  • Jenkins
  • GitHub Actions
  • GitLab CI/CD
  • CircleCI

9. Monitoring and Logging

Why?

Observability is key for reliability and performance.

✅ Monitoring Tools

  • Prometheus, Grafana (Metrics and Dashboards)
  • ELK Stack (Elasticsearch, Logstash, Kibana) – Logs
  • Datadog, New Relic

10. Security Best Practices

Why?

Secure deployments prevent vulnerabilities and data breaches.

✅ Security Concepts

  • SSH, VPN, IAM (Identity & Access Management)
  • TLS/SSL Certificates
  • Secrets management (e.g., HashiCorp Vault)

11. Mindset and Soft Skills

Why?

DevOps is not just about tools—it’s about culture, collaboration, and problem-solving.

✅ Agile and DevOps Culture

  • Collaboration with Development teams
  • Understanding CI/CD principles
  • Incident response and Root Cause Analysis (RCA)

✅ Problem-Solving

  • Debugging, troubleshooting
  • Capacity planning and system optimization

Suggested Roadmap to Start:

  1. Start with Linux + Networking → Practice on a Virtual Machine (e.g., Ubuntu).
  2. Learn Git + Shell Scripting → Automate daily tasks.
  3. Explore Cloud Fundamentals (AWS preferred) → Set up a free-tier account.
  4. Understand Docker + Kubernetes Basics → Deploy simple apps.
  5. Pick a Config Management Tool (Ansible) → Automate server setup.
  6. Get Familiar with CI/CD Pipelines (Jenkins or GitHub Actions).
  7. Focus on Monitoring (Prometheus + Grafana) → Monitor a small app.
  8. Security Basics → Practice IAM setups and TLS certificates.

Helpful Free Resources:

Would you like help mapping out a more personalized study plan or suggestions on certifications like AWS, Kubernetes (CKA), or DevOps tools?


👉 Find out personalized study plan and certification suggestions like AWS, Kubernetes (CKA), and DevOps tools. https://shyam.kubeify.com/2025/02/devops-preparation-personalized-study.html This detailed preparation guide will help you to get read for DevOps Jobs Fast.

Let me know what you think or if you have any additional insights! 🚀




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