LibreNMS

What LibreNMS is

LibreNMS is a free, self-hosted network monitoring system with device support. It can discover networks automatically through CDP, FDP, LLDP, OSPF, BGP, SNMP, and ARP. Customizable alerts can use email, IRC, Slack, and other transports. Its API can manage installations, create graphs, and retrieve data, while distributed polling allows horizontal scaling. Documented network capabilities include VLAN, ARP and FDB collection, traffic billing, syslog, service monitoring, and customizable dashboards. Integrations include Oxidized, RANCID, NfSen, Smokeping, Graylog, and Nagios plugins. Authentication options include MySQL, LDAP, Active Directory, and HTTP, with two-factor authentication also documented. Installation guides cover CentOS and Ubuntu, and Docker images are available. Native iPhone and Android apps provide core functionality, and an online demo is available before installation. The project points users to Discord and a community forum, while new device requests can be directed to GitHub issues. Commercial SLA-backed support and consultancy are offered through partners. The listed plan costs nothing.

Who it suits

LibreNMS suits people who can run a self-hosted network monitoring system and want device discovery, alerting, and network data tools. It offers installation paths for CentOS, Ubuntu, and Docker, plus native iPhone and Android apps.

Getting started

1. Open the online demo to try LibreNMS before installing.
2. Choose an installation route using the CentOS or Ubuntu guides, or Docker images.
3. Install and configure the self-hosted system for your network.
4. Use the API, alert channels, and integrations relevant to your monitoring setup.

Verdict

LibreNMS provides broad network discovery, alerting, and monitoring capabilities at no listed plan cost. It is self-hosted, with community help and partner-provided commercial support available.