Chapter 1: Introduction to IT Infrastructure Monitoring and Alerting
- Lesson 1: What is IT Infrastructure Monitoring?
- Lesson 2: Importance of Monitoring and Alerting in DevOps
- Lesson 3: Types of Monitoring: Proactive vs. Reactive
- Lesson 4: Overview of Popular Monitoring Tools (Nagios, Zabbix, Prometheus, Datadog, etc.)
- Lesson 5: Comparison of Nagios with Other Monitoring Tools
Chapter 2: Introduction to Nagios
- Lesson 1: What is Nagios? An Overview
- Lesson 2: History and Evolution of Nagios
- Lesson 3: Key Features and Capabilities of Nagios
- Lesson 4: Nagios Core vs. Nagios XI vs. Other Variants
- Lesson 5: How Nagios Fits into a DevOps Workflow
Chapter 3: Setting Up Nagios
- Lesson 1: System Requirements for Nagios Installation
- Lesson 2: Installing Nagios on Linux (Ubuntu, CentOS, RHEL)
- Lesson 3: Installing Nagios on Windows Using WSL
- Lesson 4: Setting Up Nagios in a Cloud Environment
- Lesson 5: Configuring Nagios for First-Time Use
- Lesson 6: Installing and Configuring Nagios Plugins
- Lesson 7: Setting Up Nagios in an IDE for Development (VS Code, IntelliJ)
Chapter 4: Nagios Architecture and Components
- Lesson 1: Understanding the Nagios Architecture
- Lesson 2: Nagios Core, Nagios Plugins, and NRPE
- Lesson 3: How Nagios Works: The Event-Handling System
- Lesson 4: Nagios Web Interface: GUI Overview
- Lesson 5: Understanding Nagios Objects (Hosts, Services, Contacts, etc.)
- Lesson 6: Active vs. Passive Checks in Nagios
Chapter 5: Nagios Configuration Essentials
- Lesson 1: Nagios Configuration Files and Their Locations
- Lesson 2: Defining Hosts and Services in Nagios
- Lesson 3: Understanding Host and Service Groups
- Lesson 4: Setting Up Contacts and Notifications
- Lesson 5: Nagios Commands and Macros
- Lesson 6: Using Object Inheritance in Nagios Configuration
- Lesson 7: Configuring Time Periods and Escalations
Chapter 6: Working with Nagios Commands
- Lesson 1: Essential Nagios Commands
- Lesson 2: Managing Nagios Services (Start, Stop, Restart)
- Lesson 3: Checking the Nagios Configuration File for Errors
- Lesson 4: Running Nagios from the Command Line
- Lesson 5: Managing Nagios Hosts and Services via CLI
- Lesson 6: Configuring Custom Nagios Commands
- Lesson 7: Automating Tasks Using Nagios Commands
Chapter 7: Nagios Plugins and Custom Monitoring
- Lesson 1: Understanding Nagios Plugins
- Lesson 2: Installing and Using Official Nagios Plugins
- Lesson 3: Writing Custom Nagios Plugins (Shell, Python, Perl)
- Lesson 4: Checking CPU, Memory, and Disk Usage
- Lesson 5: Monitoring Network Devices and Services
- Lesson 6: Monitoring Windows Machines Using NSClient++
- Lesson 7: Using NRPE for Remote Host Monitoring
Chapter 8: Notifications and Alerts
- Lesson 1: Configuring Notification Methods in Nagios
- Lesson 2: Setting Up Email Notifications
- Lesson 3: Configuring SMS and Slack Alerts
- Lesson 4: Using Webhooks for Custom Notifications
- Lesson 5: Managing Notification Escalations
- Lesson 6: Avoiding Notification Fatigue in Monitoring
Chapter 9: Nagios Web Interface and Visualization
- Lesson 1: Exploring the Nagios Web UI
- Lesson 2: Using Nagios Dashboards for Better Monitoring
- Lesson 3: Setting Up Graphical Performance Monitoring
- Lesson 4: Integrating Nagios with Grafana for Visualization
- Lesson 5: Using PNP4Nagios for Performance Data Graphs
Chapter 10: Advanced Nagios Features
- Lesson 1: Scaling Nagios for Large Environments
- Lesson 2: Distributed Monitoring with Nagios
- Lesson 3: Configuring Mod-Gearman for Load Balancing
- Lesson 4: Using Nagios Event Handlers for Automated Responses
- Lesson 5: Implementing Redundancy and High Availability in Nagios
Chapter 11: Nagios and Cloud Monitoring
- Lesson 1: Monitoring AWS Services with Nagios
- Lesson 2: Monitoring Azure and Google Cloud Resources
- Lesson 3: Using Nagios for Hybrid Cloud Environments
- Lesson 4: Monitoring Kubernetes Clusters with Nagios
- Lesson 5: Best Practices for Cloud-Based Nagios Deployments
Chapter 12: Nagios Security and Best Practices
- Lesson 1: Securing the Nagios Web Interface
- Lesson 2: Implementing User Authentication and Role-Based Access Control (RBAC)
- Lesson 3: Best Practices for Secure Configuration
- Lesson 4: Protecting Nagios from Cyber Threats
- Lesson 5: Audit Logging and Compliance Monitoring
Chapter 13: Troubleshooting and Debugging in Nagios
- Lesson 1: Common Nagios Issues and How to Fix Them
- Lesson 2: Debugging Nagios Logs and Error Messages
- Lesson 3: Troubleshooting Nagios Plugins and NRPE Issues
- Lesson 4: Checking Performance Issues in Large Deployments
- Lesson 5: Automating Troubleshooting with Event Handlers
Chapter 14: Upgrading and Migrating Nagios
- Lesson 1: Understanding the Nagios Release Cycle
- Lesson 2: New Features in Recent Nagios Releases
- Lesson 3: Upgrading Nagios Without Downtime
- Lesson 4: Migrating from Nagios Core to Nagios XI
- Lesson 5: Managing Deprecated Features in Nagios
Chapter 15: Nagios Integrations and Automation
- Lesson 1: Integrating Nagios with Ansible for Automated Monitoring
- Lesson 2: Using Nagios with Prometheus and Grafana
- Lesson 3: Connecting Nagios to Log Management Systems (ELK Stack, Graylog)
- Lesson 4: Automating Monitoring Tasks with Scripts
- Lesson 5: Future of Nagios in DevOps Automation
Chapter 16: Real-World Applications and Case Studies
- Lesson 1: How Enterprises Use Nagios for IT Monitoring
- Lesson 2: Nagios for Database and Application Monitoring
- Lesson 3: Implementing Nagios in Large-Scale Deployments
- Lesson 4: Case Study: Using Nagios for Network and Security Monitoring
- Lesson 5: Best Practices for Real-World Nagios Deployments