🌟 KodeKloud Eng 100 Days of DevOps Challenge

Mastering DevOps Tools and Practices Through Hands-On Experience

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📌 About This Repository

Welcome to my 100 Days of DevOps journey! This repository serves as a comprehensive record of my learning experience through the KodeKloud Engineer challenge, showcasing real-world tasks and projects designed to build practical DevOps expertise. The tasks documented here reflect the specific challenges I encountered during the challenge, including detailed solutions and verification steps. Note: While the core objectives and challenges remain consistent, the specific values (e.g., server names, file paths, or other parameters) in these tasks may differ from those you encounter in your own environment. However, the underlying concepts and problem-solving approaches remain applicable, enabling you to adapt the solutions to your specific context.

🎯 Mission: Transform theoretical knowledge into actionable skills through daily hands-on challenges spanning the entire DevOps ecosystem.

⏱️ Timeline: This project spans 100 consecutive days, with each day introducing new challenges, tools, and learning opportunities to foster expertise in DevOps practices.

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🛠️ Technologies & Tools Covered

System Administration & Infrastructure

Containerization & Orchestration

Configuration Management & Automation

Cloud Platforms

CI/CD & Version Control

Monitoring & Observability

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📅 Journey Structure

Daily Progression Format

Each day follows a structured learning approach:

• 🎯 Daily Objective: Clear learning goals and outcomes
• 📋 Task Description: Real-world scenario and requirements
• ⚙️ Implementation: Step-by-step solution with commands
• ✅ Verification: Testing and validation procedures
• 📝 Learning Notes: Key takeaways and best practices
• 🔗 Resources: Helpful links and documentation

Weekly Themes

Week	Focus Area	Days	Key Technologies
1-3	Linux & System Administration	1-20	Linux, Shell Scripting, Web Servers, Databases
4-5	Version Control & Git	21-34	Git, Repository Management, Branching, Workflows
6-7	Docker & Containerization	35-47	Docker, Images, Containers, Networks, Compose
8-10	Kubernetes Orchestration	48-67	Pods, Deployments, Volumes, Services, Applications
11-12	Jenkins & CI/CD	68-81	Jenkins Setup, Pipelines, Builds, Automation
13-14	Ansible Automation	82-93	Playbooks, Modules, Configuration Management
15	Terraform & AWS Cloud	94-100	Infrastructure as Code, VPC, EC2, IAM, CloudWatch

Complete 100-Day Breakdown

🐧 Linux & System Administration (Days 1-20)

Day	Topic	Focus Area
1	Linux User Setup with Non-Interactive Shell	User Management
2	Temporary User Setup with Expiry	Account Security
3	Secure Root SSH Access	SSH Security
4	Script Execution Permissions	File Permissions
5	SELinux Installation and Configuration	Security Policies
6	Create a Cron Job	Task Scheduling
7	Linux SSH Authentication	Key-based Auth
8	Install Ansible	Automation Tools
9	MariaDB Troubleshooting	Database Admin
10	Linux Bash Scripts	Shell Scripting
11	Install and Configure Tomcat Server	Application Servers
12	Linux Network Services	Network Configuration
13	IPtables Installation And Configuration	Firewall Management
14	Linux Process Troubleshooting	System Monitoring
15	Setup SSL for Nginx	Web Server Security
16	Install and Configure Nginx as an LBR	Load Balancing
17	Install and Configure PostgreSQL	Database Management
18	Configure LAMP server	Web Stack
19	Install and Configure Web Application	Application Deployment
20	Configure Nginx + PHP-FPM Using Unix Sock	Web Performance

🔄 Version Control & Git (Days 21-34)

Day	Topic	Focus Area
21	Set Up Git Repository on Storage Server	Repository Setup
22	Clone Git Repository on Storage Server	Repository Management
23	Fork a Git Repository	Collaboration
24	Git Create Branches	Branch Management
25	Git Merge Branches	Code Integration
26	Git Manage Remotes	Remote Repositories
27	Git Revert Some Changes	Change Management
28	Git Cherry Pick	Selective Merging
29	Manage Git Pull Requests	Code Review
30	Git Hard Reset	History Management
31	Git Stash	Temporary Storage
32	Git Rebase	History Rewriting
33	Resolve Git Merge Conflicts	Conflict Resolution
34	Git Hook	Automation Triggers

🐳 Docker & Containerization (Days 35-47)

Day	Topic	Focus Area
35	Install Docker Packages and Start Docker Service	Docker Setup
36	Deploy Nginx Container on Application Server	Container Deployment
37	Copy File to Docker Container	File Management
38	Pull Docker Image	Image Management
39	Create a Docker Image From Container	Image Creation
40	Docker EXEC Operations	Container Interaction
41	Write a Docker File	Image Building
42	Create a Docker Network	Network Configuration
43	Docker Ports Mapping	Port Management
44	Write a Docker Compose File	Multi-container Apps
45	Resolve Dockerfile Issues	Troubleshooting
46	Deploy an App on Docker Containers	Application Deployment
47	Docker Python App	Language-specific Containers

☸️ Kubernetes Orchestration (Days 48-67)

Day	Topic	Focus Area
48	Deploy Pods in Kubernetes Cluster	Pod Management
49	Deploy Applications with Kubernetes Deployments	Deployment Strategies
50	Set Resource Limits in Kubernetes Pods	Resource Management
51	Execute Rolling Updates in Kubernetes	Update Strategies
52	Revert Deployment to Previous Version in Kubernetes	Rollback Procedures
53	Resolve VolumeMounts Issue in Kubernetes	Storage Troubleshooting
54	Kubernetes Shared Volumes	Volume Management
55	Kubernetes Sidecar Containers	Container Patterns
56	Deploy Nginx Web Server on Kubernetes Cluster	Web Server Deployment
57	Print Environment Variables	Configuration Management
58	Deploy Grafana on Kubernetes Cluster	Monitoring Deployment
59	Troubleshoot Deployment issues in Kubernetes	Debugging
60	Persistent Volumes in Kubernetes	Storage Solutions
61	Init Containers in Kubernetes	Initialization Patterns
62	Manage Secrets in Kubernetes	Security Management
63	Deploy Iron Gallery App on Kubernetes	Application Deployment
64	Fix Python App Deployed on Kubernetes Cluster	Application Debugging
65	Deploy Redis Deployment on Kubernetes	Database Deployment
66	Deploy MySQL on Kubernetes	Database Management
67	Deploy Guest Book App on Kubernetes	Full-stack Application

🔧 Jenkins & CI/CD (Days 68-81)

Day	Topic	Focus Area
68	Set Up Jenkins Server	CI/CD Setup
69	Install Jenkins Plugins	Plugin Management
70	Configure Jenkins User Access	Access Control
71	Configure Jenkins Job for Package Installation	Job Configuration
72	Jenkins Parameterized Builds	Build Customization
73	Jenkins Scheduled Jobs	Automated Scheduling
74	Jenkins Database Backup Job	Backup Automation
75	Jenkins Slave Nodes	Distributed Builds
76	Jenkins Project Security	Security Configuration
77	Jenkins Deploy Pipeline	Deployment Automation
78	Jenkins Conditional Pipeline	Conditional Logic
79	Jenkins Deployment Job	Application Deployment
80	Jenkins Chained Builds	Build Dependencies
81	Jenkins Multistage Pipeline	Pipeline Architecture

🔧 Ansible Automation (Days 82-93)

Day	Topic	Focus Area
82	Create Ansible Inventory for App Server Testing	Inventory Management
83	Troubleshoot and Create Ansible Playbook	Playbook Development
84	Copy Data to App Servers using Ansible	File Management
85	Create Files on App Servers using Ansible	File Operations
86	Ansible Ping Module Usage	Module Basics
87	Ansible Install Package	Package Management
88	Ansible Blockinfile Module	File Modification
89	Ansible Manage Services	Service Management
90	Managing ACLs Using Ansible	Permission Management
91	Ansible Lineinfile Module	Line-level Editing
92	Managing Jinja2 Templates Using Ansible	Template Management
93	Using Ansible Conditionals	Conditional Logic

☁️ Terraform & AWS (Days 94-100)

Day	Topic	Focus Area
94	Create VPC Using Terraform	Network Infrastructure
95	Create Security Group Using Terraform	Security Configuration
96	Create EC2 Instance Using Terraform	Compute Resources
97	Create IAM Policy Using Terraform	Identity Management
98	Launch EC2 in Private VPC Subnet Using Terraform	Private Infrastructure
99	Attach IAM Policy for DynamoDB Access Using Terraform	Database Access
100	Create and Configure Alarm Using CloudWatch Using Terraform	Monitoring & Alerting

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📂 Repository Structure

📦 kodekloud-eng-100-days-devops/
├── 📁 Days-001-020-Linux-System-Administration/
│   ├── 📄 Day-001-Linux-User-Setup-Non-Interactive-Shell/
│   ├── 📄 Day-002-Temporary-User-Setup-Expiry/
│   ├── 📄 Day-003-Secure-Root-SSH-Access/
│   └── 📄 ... (through Day 20)
├── 📁 Days-021-034-Version-Control-Git/
│   ├── 📄 Day-021-Setup-Git-Repository-Storage-Server/
│   ├── 📄 Day-022-Clone-Git-Repository-Storage-Server/
│   └── 📄 ... (through Day 34)
├── 📁 Days-035-047-Docker-Containerization/
│   ├── 📄 Day-035-Install-Docker-Packages-Start-Service/
│   ├── 📄 Day-036-Deploy-Nginx-Container-App-Server/
│   └── 📄 ... (through Day 47)
├── 📁 Days-048-067-Kubernetes-Orchestration/
│   ├── 📄 Day-048-Deploy-Pods-Kubernetes-Cluster/
│   ├── 📄 Day-049-Deploy-Apps-Kubernetes-Deployments/
│   └── 📄 ... (through Day 67)
├── 📁 Days-068-081-Jenkins-CICD/
│   ├── 📄 Day-068-Setup-Jenkins-Server/
│   ├── 📄 Day-069-Install-Jenkins-Plugins/
│   └── 📄 ... (through Day 81)
├── 📁 Days-082-093-Ansible-Automation/
│   ├── 📄 Day-082-Create-Ansible-Inventory-App-Server/
│   ├── 📄 Day-083-Troubleshoot-Create-Ansible-Playbook/
│   └── 📄 ... (through Day 93)
├── 📁 Days-094-100-Terraform-AWS/
│   ├── 📄 Day-094-Create-VPC-Using-Terraform/
│   ├── 📄 Day-095-Create-Security-Group-Using-Terraform/
│   └── 📄 ... (through Day 100)
├── 📄 README.md
├── 📄 PROGRESS.md
└── 📄 RESOURCES.md

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🎯 Learning Objectives

Core Competencies

• ✅ System Administration: Linux mastery, shell scripting, system monitoring
• ✅ Infrastructure as Code: Terraform, CloudFormation, automated provisioning
• ✅ Configuration Management: Ansible playbooks, infrastructure automation
• ✅ Containerization: Docker mastery, container security, optimization
• ✅ Orchestration: Kubernetes deployment, scaling, service management
• ✅ CI/CD Pipelines: Automated testing, deployment, and delivery
• ✅ Cloud Platforms: AWS, Azure, GCP services and best practices
• ✅ Monitoring & Observability: Grafana, Prometheus, log management

Professional Skills

• 🔧 Problem Solving: Debug complex infrastructure issues
• 📊 Performance Optimization: System and application tuning
• 🔐 Security Best Practices: Infrastructure and application security
• 📈 Scalability Planning: Design for growth and reliability
• 🤝 Collaboration: DevOps culture and team integration

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🚦 Getting Started

Prerequisites

• Basic Linux command line knowledge
• Understanding of networking fundamentals
• Familiarity with at least one programming language
• Access to a Linux environment (physical, VM, or cloud)

Setup Instructions

1. Clone the repository:

git clone https://github.com/MiqdadProjects/kodekloud-eng-100-days-devops.git
cd kodekloud-eng-100-days-devops

2. Follow daily challenges:

cd Day-001-User-Management
cat README.md

3. Track your progress:

• Update PROGRESS.md daily
• Document learnings and challenges
• Share your journey on social media with #100DaysOfDevOps

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📈 Progress Tracking

Current Status

• 🗓️ Start Date: [Your Start Date]
• 📅 Current Day: Day X of 100
• ⏱️ Days Remaining: X days
• 🎯 Completion Percentage: X%

Milestones

• Week 3: Linux System Administration Mastery
• Week 5: Git & Version Control Expert
• Week 7: Docker Containerization Pro
• Week 10: Kubernetes Orchestration Expert
• Week 12: Jenkins CI/CD Pipeline Master
• Week 14: Ansible Automation Specialist
• Day 100: Complete DevOps Engineer! 🎉

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🤝 Community & Collaboration

Connect With Me

• 📧 Email: miqdadraja562@gmail.com

Join the Challenge

• ⭐ Star this repository to follow the journey
• 🍴 Fork it to start your own 100-day challenge
• 💬 Share your progress using #100DaysOfDevOps
• 🔄 Pull requests welcome for improvements and corrections

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📚 Additional Resources

• 📖 KodeKloud Platform - Official learning platform
• 🎯 KodeKloud Engineer (Referral Link) - Join the challenge with my referral
• 📝 DevOps Roadmap - Complete learning path
• 📑 Cheat Sheets - Quick reference guides
• 🛠️ Tools & Scripts - Helpful automation scripts

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💫 Inspiration

"The expert in anything was once a beginner who refused to give up."

This challenge represents a commitment to continuous learning and professional growth in the ever-evolving field of DevOps. Every day brings new challenges, tools, and opportunities to build expertise that will drive infrastructure innovation and operational excellence.

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🌟 Ready to Transform Your DevOps Skills?

Let's embark on this 100-day journey together!