Module 1: Introduction to Monitoring Tool

• Overview of IT Infrastructure Monitoring
• Why Combine Nagios, Grafana, and Mod-Gearman?
• Understanding Key Features of Each Tool
• Nagios for Monitoring
• Grafana for Visualization
• Mod-Gearman for Distributed Monitoring

Module 2: Setting Up Nagios

• Installing Nagios Core on Linux
• Configuring Apache for Nagios Web Interface
• Installing Nagios Plugins
• Basic Configuration Files:
• cfg
• Object Definitions: hosts.cfg, services.cfg, commands.cfg
• Adding Hosts and Services for Monitoring

Module 3: Advanced Nagios Configuration

• Defining Host and Service Groups
• Parent-Child Host Relationships
• Using NRPE for Remote Monitoring
• Writing Custom Plugins for Nagios (Shell Scripts, Python)
• Configuring Notification Escalations and Dependencies

Module 4: Introduction to Mod-Gearman

• What is Mod-Gearman?
• Benefits of Using Mod-Gearman with Nagios
• Architecture of Mod-Gearman
• Gearman Server
• Gearman Workers
• Nagios Integration
• Installing Mod-Gearman on Nagios Server

Module 5: Configuring Mod-Gearman 

• Configuring Mod-Gearman in Nagios
• cfg
• Setting Up Workers
• Distributing Monitoring Load:
• Assigning Specific Tasks to Workers
• Optimizing Performance for Large Infrastructures
• Verifying Mod-Gearman Setup

Module 6: Introduction to Grafana 

• Installing and Configuring Grafana
• Connecting Grafana to Nagios Data
• Using Nagios Exchange Plugins
• PNP4Nagios Integration with Grafana
• Overview of Grafana Features
• Panels and Dashboards
• Data Source Configurations

Module 7: Grafana Dashboards for Nagios

• Creating Basic Dashboards
• Importing Pre-Built Dashboards for Nagios
• Customizing Panels:
• Graphs, Heatmaps, Tables
• Using Variables in Dashboards for Dynamic Views
• Embedding Dashboards in Other Tools

Module 8: Advanced Nagios + Grafana Integration

• Configuring Performance Data Export in Nagios
• Visualizing Custom Metrics in Grafana
• Adding Advanced Panels with Alerts and Thresholds
• Setting Up Real-Time Monitoring Dashboards

Module 9: Alerting and Notifications

• Configuring Nagios Alerts
• Setting Up Notifications in Grafana:
• Slack, Email, PagerDuty
• Combining Alerts from Nagios and Grafana
• Escalation Policies and Custom Alerts

Module 10: Distributed Monitoring with Mod-Gearman

• Scaling Nagios with Mod-Gearman
• Configuring High Availability for Mod-Gearman
• Distributing Monitoring Tasks to Remote Workers
• Monitoring Distributed Environments in Grafana

Module 11: Troubleshooting and Optimization

• Debugging Nagios and Mod-Gearman
• Checking Logs for Mod-Gearman and Nagios
• Optimizing Mod-Gearman Worker Performance
• Securing Nagios, Grafana, and Gearman

Module 12: Real-World Use Cases

• Monitoring a Distributed Infrastructure
• Integrating Nagios, Mod-Gearman, and Grafana for:
• Server Monitoring
• Network Device Monitoring
• Application and Database Monitoring
• Creating SLA Dashboards for Business Metrics

Module 13: Final Project

• Setting Up a Complete Monitoring Stack:
• Installing Nagios with Mod-Gearman and Grafana
• Configuring Metrics Collection and Alerts
• Creating Custom Dashboards for Visualization
• Documentation and Deployment Best Practices