librenms Installation Guide

librenms is a free and open-source network monitoring. LibreNMS provides autodiscovering network monitoring platform

Miscellaneous🟡 intermediate7 min⏱️ 15-30 minutes
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librenms is a free and open-source network monitoring. LibreNMS provides autodiscovering network monitoring platform

1. Prerequisites

  • Hardware Requirements:
  • CPU: 2+ cores
  • RAM: 2GB minimum
  • Storage: 10GB for data
  • Network: SNMP/HTTP
  • Operating System:
  • Linux: Any modern distribution (RHEL, Debian, Ubuntu, CentOS, Fedora, Arch, Alpine, openSUSE)
  • macOS: 10.14+ (Mojave or newer)
  • Windows: Windows Server 2016+ or Windows 10
  • FreeBSD: 11.0+
  • Network Requirements:
  • Port 80 (default librenms port)
  • None
  • Dependencies:
  • See official documentation for specific requirements
  • System Access: root or sudo privileges required

    • 2. Supported Operating Systems

    This guide supports installation on:

  • RHEL 8/9 and derivatives (CentOS Stream, Rocky Linux, AlmaLinux)
  • Debian 11/12
  • Ubuntu 20.04/22.04/24.04 LTS
  • Arch Linux (rolling release)
  • Alpine Linux 3.18+
  • openSUSE Leap 15.5+ / Tumbleweed
  • SUSE Linux Enterprise Server (SLES) 15+
  • macOS 12+ (Monterey and later)
  • FreeBSD 13+
  • Windows 10/11/Server 2019+ (where applicable)

    • 3. Installation

    RHEL/CentOS/Rocky Linux/AlmaLinux

    bash 
    # Install EPEL repository if needed
sudo dnf install -y epel-release

# Install librenms
sudo dnf install -y librenms

# Enable and start service
sudo systemctl enable --now librenms

# Configure firewall
sudo firewall-cmd --permanent --add-port=80/tcp
sudo firewall-cmd --reload

# Verify installation
librenms --version

    Debian/Ubuntu

    bash 
    # Update package index
sudo apt update

# Install librenms
sudo apt install -y librenms

# Enable and start service
sudo systemctl enable --now librenms

# Configure firewall
sudo ufw allow 80

# Verify installation
librenms --version

    Arch Linux

    bash 
    # Install librenms
sudo pacman -S librenms

# Enable and start service
sudo systemctl enable --now librenms

# Verify installation
librenms --version

    Alpine Linux

    bash 
    # Install librenms
apk add --no-cache librenms

# Enable and start service
rc-update add librenms default
rc-service librenms start

# Verify installation
librenms --version

    openSUSE/SLES

    bash 
    # Install librenms
sudo zypper install -y librenms

# Enable and start service
sudo systemctl enable --now librenms

# Configure firewall
sudo firewall-cmd --permanent --add-port=80/tcp
sudo firewall-cmd --reload

# Verify installation
librenms --version

    macOS

    bash 
    # Using Homebrew
brew install librenms

# Start service
brew services start librenms

# Verify installation
librenms --version

    FreeBSD

    bash 
    # Using pkg
pkg install librenms

# Enable in rc.conf
echo 'librenms_enable="YES"' >> /etc/rc.conf

# Start service
service librenms start

# Verify installation
librenms --version

    Windows

    bash 
    # Using Chocolatey
choco install librenms

# Or using Scoop
scoop install librenms

# Verify installation
librenms --version

    Initial Configuration

    Basic Configuration

    bash 
    # Create configuration directory
sudo mkdir -p /etc/librenms

# Set up basic configuration
# See official documentation for detailed configuration options

# Test configuration
librenms --version

    5. Service Management

    systemd (RHEL, Debian, Ubuntu, Arch, openSUSE)

    bash 
    # Enable service
sudo systemctl enable librenms

# Start service
sudo systemctl start librenms

# Stop service
sudo systemctl stop librenms

# Restart service
sudo systemctl restart librenms

# Check status
sudo systemctl status librenms

# View logs
sudo journalctl -u librenms -f

    OpenRC (Alpine Linux)

    bash 
    # Enable service
rc-update add librenms default

# Start service
rc-service librenms start

# Stop service
rc-service librenms stop

# Restart service
rc-service librenms restart

# Check status
rc-service librenms status

    rc.d (FreeBSD)

    bash 
    # Enable in /etc/rc.conf
echo 'librenms_enable="YES"' >> /etc/rc.conf

# Start service
service librenms start

# Stop service
service librenms stop

# Restart service
service librenms restart

# Check status
service librenms status

    launchd (macOS)

    bash 
    # Using Homebrew services
brew services start librenms
brew services stop librenms
brew services restart librenms

# Check status
brew services list | grep librenms

    Windows Service Manager

    powershell 
    # Start service
net start librenms

# Stop service
net stop librenms

# Using PowerShell
Start-Service librenms
Stop-Service librenms
Restart-Service librenms

# Check status
Get-Service librenms

    Advanced Configuration

    See the official documentation for advanced configuration options.

    Reverse Proxy Setup

    nginx Configuration

    nginx 
    upstream librenms_backend {
    server 127.0.0.1:80;
}

server {
    listen 80;
    server_name librenms.example.com;
    return 301 https://$server_name$request_uri;
}

server {
    listen 443 ssl http2;
    server_name librenms.example.com;

    ssl_certificate /etc/ssl/certs/librenms.example.com.crt;
    ssl_certificate_key /etc/ssl/private/librenms.example.com.key;

    location / {
        proxy_pass http://librenms_backend;
        proxy_set_header Host $host;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header X-Forwarded-Proto $scheme;
    }
}

    Apache Configuration

    apache 
    <VirtualHost *:80>
    ServerName librenms.example.com
    Redirect permanent / https://librenms.example.com/
</VirtualHost>

<VirtualHost *:443>
    ServerName librenms.example.com
    
    SSLEngine on
    SSLCertificateFile /etc/ssl/certs/librenms.example.com.crt
    SSLCertificateKeyFile /etc/ssl/private/librenms.example.com.key
    
    ProxyRequests Off
    ProxyPreserveHost On
    
    ProxyPass / http://127.0.0.1:80/
    ProxyPassReverse / http://127.0.0.1:80/
</VirtualHost>

    HAProxy Configuration

    haproxy 
    frontend librenms_frontend
    bind *:80
    bind *:443 ssl crt /etc/ssl/certs/librenms.pem
    redirect scheme https if !{ ssl_fc }
    default_backend librenms_backend

backend librenms_backend
    balance roundrobin
    server librenms1 127.0.0.1:80 check

    Security Configuration

    Basic Security Setup

    bash 
    # Set appropriate permissions
sudo chown -R librenms:librenms /etc/librenms
sudo chmod 750 /etc/librenms

# Configure firewall
sudo firewall-cmd --permanent --add-port=80/tcp
sudo firewall-cmd --reload

# Enable SELinux policies (if applicable)
sudo setsebool -P httpd_can_network_connect on

    Database Setup

    See official documentation for database configuration requirements.

    Performance Optimization

    System Tuning

    bash 
    # Basic system tuning
echo 'net.core.somaxconn = 65535' | sudo tee -a /etc/sysctl.conf
echo 'net.ipv4.tcp_max_syn_backlog = 65535' | sudo tee -a /etc/sysctl.conf
sudo sysctl -p

    Monitoring

    Basic Monitoring

    bash 
    # Check service status
sudo systemctl status librenms

# View logs
sudo journalctl -u librenms -f

# Monitor resource usage
top -p $(pgrep librenms)

    9. Backup and Restore

    Backup Script

    bash 
    #!/bin/bash
# Basic backup script
BACKUP_DIR="/backup/librenms"
DATE=$(date +%Y%m%d_%H%M%S)

mkdir -p "$BACKUP_DIR"
tar -czf "$BACKUP_DIR/librenms-backup-$DATE.tar.gz" /etc/librenms /var/lib/librenms

echo "Backup completed: $BACKUP_DIR/librenms-backup-$DATE.tar.gz"

    Restore Procedure

    bash 
    # Stop service
sudo systemctl stop librenms

# Restore from backup
tar -xzf /backup/librenms/librenms-backup-*.tar.gz -C /

# Start service
sudo systemctl start librenms

    6. Troubleshooting

    Common Issues

    1. Service won't start:

    bash 
    # Check logs
sudo journalctl -u librenms -n 100
sudo tail -f /var/log/librenms/librenms.log

# Check configuration
librenms --version

# Check permissions
ls -la /etc/librenms

    2. Connection issues:

    bash 
    # Check if service is listening
sudo ss -tlnp | grep 80

# Test connectivity
telnet localhost 80

# Check firewall
sudo firewall-cmd --list-all

    3. Performance issues:

    bash 
    # Check resource usage
top -p $(pgrep librenms)

# Check disk I/O
iotop -p $(pgrep librenms)

# Check connections
ss -an | grep 80

    Integration Examples

    Docker Compose Example

    yaml 
    version: '3.8'
services:
  librenms:
    image: librenms:latest
    ports:
      - "80:80"
    volumes:
      - ./config:/etc/librenms
      - ./data:/var/lib/librenms
    restart: unless-stopped

    Maintenance

    Update Procedures

    bash 
    # RHEL/CentOS/Rocky/AlmaLinux
sudo dnf update librenms

# Debian/Ubuntu
sudo apt update && sudo apt upgrade librenms

# Arch Linux
sudo pacman -Syu librenms

# Alpine Linux
apk update && apk upgrade librenms

# openSUSE
sudo zypper update librenms

# FreeBSD
pkg update && pkg upgrade librenms

# Always backup before updates
tar -czf /backup/librenms-pre-update-$(date +%Y%m%d).tar.gz /etc/librenms

# Restart after updates
sudo systemctl restart librenms

    Regular Maintenance

    bash 
    # Log rotation
sudo logrotate -f /etc/logrotate.d/librenms

# Clean old logs
find /var/log/librenms -name "*.log" -mtime +30 -delete

# Check disk usage
du -sh /var/lib/librenms

    Additional Resources

  • Official Documentation: https://docs.librenms.org/
  • GitHub Repository: https://github.com/librenms/librenms
  • Community Forum: https://forum.librenms.org/
  • Best Practices Guide: https://docs.librenms.org/best-practices

    • ---

    Note: This guide is part of the HowToMgr collection. Always refer to official documentation for the most up-to-date information.

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