SNMP exporter
Exposes SNMP data from network devices in a Prometheus-compatible format for monitoring.
What is SNMP exporter?
Prometheus SNMP Exporter is an open-source tool that collects SNMP metrics from network devices and exposes them in a format compatible with Prometheus monitoring. It solves the problem of integrating SNMP-based network equipment (like switches, routers, and access points) into modern Prometheus-based observability stacks. The exporter automatically maps SNMP's hierarchical OID structure to Prometheus's multi-dimensional metric labels.
DevOps engineers, SREs, and network administrators who need to monitor network infrastructure using Prometheus. It's particularly useful for organizations with SNMP-enabled devices that want to centralize monitoring in a Prometheus ecosystem.
Developers choose SNMP Exporter because it's the official, recommended way to integrate SNMP with Prometheus, offering automatic data mapping, scalability for thousands of devices, and support for multiple SNMP versions. Its ability to act as a central proxy simplifies configuration and reduces the overhead of managing individual device exporters.
Overview
SNMP Exporter for Prometheus
Use Cases
Best For
- Monitoring SNMP-enabled network switches and routers in a Prometheus stack
- Collecting interface statistics (like bandwidth usage and errors) from network devices
- Centralizing SNMP metric collection from thousands of devices with a single exporter instance
- Integrating legacy SNMP devices into modern cloud-native observability platforms
- Scraping multiple SNMP MIB modules from a device in a single request
- Using SNMPv3 for secure authentication and encryption in network monitoring
Not Ideal For
- Teams using non-Prometheus monitoring platforms like Zabbix or Datadog
- Projects requiring custom SNMP MIBs without the ability to run the generator tool
- Environments where SNMP v3 authentication setup is deemed too complex or insecure
- Real-time network monitoring scenarios needing push-based metrics instead of Prometheus's pull model
Pros & Cons
Pros
Transforms SNMP's hierarchical OID trees into Prometheus's labeled metrics automatically, as demonstrated in the README where ifHCOutOctets is combined with labels like ifIndex and ifDescr.
A single instance can handle thousands of devices, centralizing SNMP data collection and reducing deployment complexity, as stated in the Scaling section.
Supports SNMP v1, v2c, and v3 with configurable auth modules and transports, allowing adaptation to various network security and protocol requirements.
Allows scraping multiple SNMP modules in one request with configurable concurrency, improving efficiency for monitoring complex devices, as detailed in the Multi-Module Handling section.
Cons
Custom MIBs require using the separate generator tool, adding overhead for non-standard devices beyond the default snmp.yml file, which the README admits is necessary for non-public MIBs.
Relies on SNMP where v1/v2c send community strings unencrypted, and v3 setup can be intricate, posing security risks and usability hurdles, as noted in the README's security warnings.
Designed exclusively as a Prometheus proxy, making it unsuitable for other monitoring systems without significant integration effort, limiting its standalone utility.
In multi-module scraping, walks are not de-duplicated between modules, potentially leading to redundant data collection and increased load, as explicitly mentioned in the README.
Frequently Asked Questions
Related Projects
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