DevOps Is a Culture, Not a Title
DevOps bridges the gap between development and operations. It is about automation, collaboration, and shipping reliably. Not a tool or a team – a way of working.
The DevOps Lifecycle
- Plan: Jira, Trello, Linear
- Code: Git, GitHub, GitLab
- Build: Docker, npm, Maven
- Test: Jest, pytest, Selenium
- Release: GitHub Actions, Jenkins
- Deploy: Kubernetes, AWS, Terraform
- Operate: Ansible, Puppet
- Monitor: Prometheus, Grafana, Datadog
Infrastructure as Code
# Terraform - define cloud resources in code
resource "aws_instance" "web" {
ami = "ami-0c55b159cbfafe1f0"
instance_type = "t3.micro"
tags = {
Name = "web-server"
}
}Essential DevOps Tools
| Category | Tools |
|---|---|
| Version Control | Git, GitHub, GitLab |
| CI/CD | GitHub Actions, Jenkins, CircleCI |
| Containers | Docker, Podman |
| Orchestration | Kubernetes, Docker Swarm |
| IaC | Terraform, Ansible, Pulumi |
| Monitoring | Prometheus, Grafana, Datadog |
Getting Started
- Learn Linux and shell scripting
- Master Git workflows
- Understand Docker containers
- Set up a CI/CD pipeline
- Explore cloud platforms (AWS/GCP/Azure)