DevOps Best Practices

A Comprehensive Guide

Welcome to our DevOps journey

Youqing Han
DevOps Engineer

Building reliable, scalable infrastructure

Agenda

What We’ll Cover

Infrastructure as Code
CI/CD Pipeline Design
Monitoring & Observability
Security Best Practices
Cloud Migration Strategies

Infrastructure as Code

Why IaC Matters

Consistency: Same environment every time
Version Control: Track changes over time
Automation: Reduce manual errors
Scalability: Easy to replicate and scale

Popular Tools

Terraform
CloudFormation
Pulumi
Ansible

Terraform Example

# AWS VPC Configuration
resource "aws_vpc" "main" {
  cidr_block           = "10.0.0.0/16"
  enable_dns_hostnames = true
  enable_dns_support   = true
  
  tags = {
    Name = "main-vpc"
    Environment = "production"
  }
}

resource "aws_subnet" "public" {
  count = 2
  vpc_id = aws_vpc.main.id
  cidr_block = "10.0.${count.index + 1}.0/24"
  availability_zone = data.aws_availability_zones.available.names[count.index]
  
  map_public_ip_on_launch = true
  
  tags = {
    Name = "public-subnet-${count.index + 1}"
  }
}

Notes: This example shows a basic VPC setup with public subnets across multiple AZs

CI/CD Pipeline Design

Pipeline Stages

1. Source Control

Git-based workflows
Branch protection rules
Code review requirements

2. Build & Test

Automated testing
Code quality checks
Security scanning

3. Deploy

Blue-green deployments
Canary releases
Rollback strategies

Monitoring & Observability

The Three Pillars

📊 Metrics

System performance
Business KPIs
Custom dashboards

📝 Logs

Centralized logging
Structured log format
Real-time analysis

🔍 Traces

Distributed tracing
Request flow mapping
Performance bottlenecks

Security Best Practices

Security-First Approach

🔐 Access Control

Principle of least privilege
Multi-factor authentication
Regular access reviews

🛡️ Infrastructure Security

Network segmentation
Encryption at rest and in transit
Regular security updates

🔍 Monitoring & Detection

Security event monitoring
Anomaly detection
Incident response procedures

Cloud Migration Strategies

Migration Approaches

🚀 Lift and Shift

Quick migration
Minimal changes
Higher costs initially

🔄 Replatform

Optimize for cloud
Use managed services
Balanced approach

🏗️ Refactor

Cloud-native design
Maximum optimization
Long-term benefits

Key Takeaways

Remember These Points

Automation is key to DevOps success
Monitoring should be built-in, not afterthought
Security must be integrated from the start
Documentation is crucial for team collaboration
Continuous improvement is the goal

Questions & Discussion

Thank You!

Let’s discuss your DevOps challenges

Contact Information:

Email: [email protected]
LinkedIn: linkedin.com/in/hanyouqing
GitHub: github.com/hanyouqing

Building better infrastructure, one commit at a time