What is DevOps?
DevOps is a set of practices that combines software development (Dev) and IT operations (Ops). It emphasizes collaboration, automation, and continuous delivery to streamline workflows and accelerate delivery cycles.
Best Practices for DevOps
1. Use Infrastructure as Code (IaC)
Treat your infrastructure the same way you treat your codebase. Use tools like Terraform or AWS CloudFormation to provision resources declaratively and consistently.
2. Automate Testing
Integrate automated testing at every stage of the pipeline. This ensures bugs are caught early and helps maintain code quality.
3. Monitor Everything
Use tools like Prometheus and Grafana to monitor the health and performance of your systems, applications, and pipelines.
4. Command Line Interface(CLI)
Get your hands dirty in Docker Cli and Docker desktop. docker addition Docker was developed to solve developement and operations problem, this is because if you are working with docker in your source code, its guaranteed that your project will work on all other devices, since its more secure.It runs under linux/unix hardware.
if your os is windows you can use (wsl) windows subsystem for linix or else you can install a hypervisor 1 or 2 for a Virtual Machine. To learn about virtualisation click here
Pros and Cons of DevOps
Pros
- Faster time-to-market for software.
- Improved collaboration between teams.
- Better scalability and reliability of systems.
Cons
- Initial setup can be complex and resource-intensive.
- Requires cultural shifts and training within teams.
- Over-reliance on automation tools can lead to challenges.
The DevOps Lifecycle
1. Plan
Gather requirements, create user stories, and design your application.
2. Develop
Write code collaboratively using tools like Git and code editors.
3. Build
Compile and package code into deployable artifacts using CI/CD tools like Jenkins.
4. Test
Run automated tests to ensure code quality and performance.
5. Release
Deploy applications to staging or production environments.
6. Monitor
Track application performance and logs using tools like Prometheus and Grafana.
Key DevOps Tools
Docker
A platform for creating, deploying, and managing containers that package applications with their dependencies.
Git
A version control system that enables teams to collaborate on code and track changes efficiently.
Jenkins
An automation server used for continuous integration (CI) and continuous delivery (CD) pipelines.click here to view Jenkins
Kubernetes
An orchestration tool for managing and scaling containerized applications.
Installation Guide
Docker Installation
Linux:
sudo apt-get install docker-ce
Windows/Mac: Use official Docker Desktop installer.
Git Installation
Linux:
sudo apt-get install git
Windows/Mac: Download Git from https://git-scm.com
Jenkins Installation
Linux:
wget -q -O - https://pkg.jenkins.io/debian/jenkins.io.key | sudo apt-key add -
Kubernetes Installation
Using Minikube (Linux/Windows/Mac):
curl -LO https://storage.googleapis.com/minikube/releases/latest/minikube-linux-amd64
sudo install minikube-linux-amd64 /usr/local/bin/minikube
minikube start