Network Monitoring Without Vendor Lock-in: LibreNMS and Zabbix Training Course

Introduction to Open Source Network Monitoring

• The evolution of network monitoring from traditional SNMP to modern telemetry
• Addressing vendor lock-in concerns associated with commercial monitoring solutions
• An overview of the current open-source monitoring landscape
• Comparing LibreNMS and Zabbix to select the most suitable platform
• Strategies for hybrid and complementary monitoring approaches

LibreNMS Architecture and Installation

• Overview of LibreNMS architecture and core components
• Installation methods: manual setup versus Docker deployment
• Database configuration using MySQL or MariaDB
• Setting up web servers with Apache or Nginx and PHP-FPM
• Configuring and tuning RRDtool for data storage
• Initial configuration and system validation

Zabbix Architecture and Installation

• Understanding Zabbix architecture: server, proxy, agent, and frontend roles
• Installation options: package managers, Docker, or source compilation
• Database setup and optimization with MySQL, PostgreSQL, or TimescaleDB
• Configuration of the Zabbix server and frontend interface
• Navigating the initial setup wizard
• Considering scalability requirements from the outset

Device Discovery and Inventory Management

• Leveraging automatic network discovery features in LibreNMS
• Utilizing Zabbix network discovery and auto-registration capabilities
• SNMP versions and security enhancements (v1, v2c, v3)
• Classifying and grouping devices for efficient management
• Managing device location details and contact information
• Bulk configuration via import/export functionalities

SNMP Monitoring Deep Dive

• SNMP protocol fundamentals and Management Information Bases (MIBs)
• Configuring SNMP on various network devices such as routers, switches, and firewalls
• Monitoring custom OIDs and implementing custom polling mechanisms
• Implementing SNMPv3 security through authentication and encryption
• Troubleshooting common SNMP connectivity issues
• Addressing vendor-specific SNMP considerations

Agent-Based Monitoring

• Installing and configuring the Zabbix agent
• Exploring Zabbix Agent 2, the next-generation Go-based agent
• Integrating the LibreNMS agent with check_mk
• Developing custom scripts and defining user parameters
• Comparing passive and active agent modes
• Scaling agent deployment using automation tools like Ansible, Puppet, or Chef

Windows and Linux Server Monitoring

• Monitoring Windows performance counters and services
• Tracking Linux system metrics including CPU, memory, disk, and network usage
• Monitoring specific processes and services
• Monitoring and parsing log files for insights
• Observing JVM and application-level performance
• Monitoring containerized workloads in Docker and Kubernetes

Network Equipment Monitoring

• Switch monitoring: port status, VLANs, Spanning Tree Protocol (STP), and MAC tables
• Router monitoring: BGP, OSPF, and routing table analysis
• Firewall monitoring: session tracking, throughput, and rule hit counts
• Monitoring wireless access points
• Environmental monitoring: temperature, power supply, and UPS status
• Tracking interface utilization and error rates

Virtualization and Cloud Monitoring

• Integrating VMware vSphere monitoring
• Monitoring Proxmox VE environments
• Implementing Hyper-V monitoring
• Utilizing cloud monitoring APIs for AWS, Azure, and GCP
• Monitoring OpenStack deployments
• Observing container orchestration platforms

Item Types and Data Collection

• Overview of Zabbix item types: agent, SNMP, IPMI, JMX, SSH, and Telnet
• Using calculated and aggregate items for complex metrics
• Implementing dependent items and data preprocessing
• Leveraging LibreNMS poller modules and OS discovery
• Developing custom data collection methods
• Understanding data types and unit management

Alerting and Triggers

• Writing Zabbix trigger expressions and using functions
• Managing trigger dependencies and event correlation
• Configuring LibreNMS alert rules and notification transports
• Setting up notification channels: email, SMS, Slack, PagerDuty, and webhooks
• Defining escalation paths and acknowledgment workflows
• Managing maintenance windows and scheduled downtime

Dashboards and Visualization

• Creating Zabbix dashboards and screen layouts
• Utilizing graph widgets and building network maps
• Customizing LibreNMS dashboards for specific needs
• Creating custom graphs and applying templates
• Developing network topology maps and discovery views
• Integrating Grafana for advanced visualization capabilities

Reporting and Analytics

• Generating SLA and availability reports
• Producing capacity planning reports
• Creating custom reports for specific business needs
• Scheduling automatic report delivery
• Performing trend analysis and forecasting
• Automating report generation via API

Distributed and High-Availability Monitoring

• Deploying Zabbix proxies for remote site monitoring
• Implementing Zabbix server clustering and High Availability (HA)
• Setting up distributed pollers in LibreNMS
• Load balancing across multiple pollers
• Strategies for geographic distribution
• Configuring database replication and clustering

Performance Optimization

• Optimizing and tuning database performance
• Improving poller performance and concurrent check capacity
• Optimizing history and trend storage mechanisms
• Implementing housekeeping and data retention policies
• Applying effective caching strategies
• Guidelines for hardware sizing and scaling

Security and Access Control

• Integrating user authentication via LDAP, SAML, and Multi-Factor Authentication (MFA)
• Configuring Role-Based Access Control (RBAC)
• Managing permissions for host groups and templates
• Securing APIs and managing token access
• Implementing audit logging and compliance measures
• Ensuring secure communications using TLS/SSL

Automation and Integration

• Utilizing the Zabbix API for scripting and automation
• Leveraging the LibreNMS API for automated tasks
• Integrating webhooks with ticketing systems
• Using Ansible modules for configuration management
• Integrating monitoring into CI/CD pipelines
• Implementing ChatOps and notification automation

Migration from Commercial Tools

• Assessing the replacement of commercial monitoring solutions
• Developing data migration strategies and selecting appropriate tooling
• Managing coexistence during the transition period
• Training staff and updating documentation
• Reviewing lessons learned from production migrations

Production Deployment Best Practices

• Establishing backup and disaster recovery procedures
• Planning upgrade strategies for production environments
• Creating comprehensive documentation and runbooks
• Defining testing and validation procedures
• Engaging with community support and contributing back