NMIS Module
opHA
High Availability and Distributed Management for NMIS
opHA is the high availability and distributed-management layer for NMIS. Deploy NMIS across as many primary and poller servers as you need, in any geography, and consolidate every device, event, and dashboard into a single management view. The latest evolution, opHA Message Bus, adds real-time event streaming and zero event loss for the most demanding multi-tenant environments.
Overview
Scale NMIS without losing the single pane of glass
NMIS scales beautifully on a single server. opHA is what you reach for when one server is no longer enough. It coordinates multiple NMIS instances into one logical platform, so your operators see one consolidated view, your customers stay isolated from each other, and your monitoring keeps running even when individual servers do not.
Distribute the polling
Place pollers wherever your devices live, on-prem, in the cloud, or at customer sites, and let opHA bring the data home. No more bandwidth-heavy centralised polling across the WAN.
Consolidate the management
One interface, one dashboard set, one event stream. opHA gives operators a single view across every poller and every tenant, without forcing data into a single physical server.
Keep monitoring running
Automated failover for primary poller functions, redundant nodes, and message replication mean a server outage no longer means a monitoring outage.
Two architectures, one product family
Pick the architecture that fits your scale
opHA ships in two flavours. Both deliver distributed NMIS, central management, and multi-tenancy. The difference is how data moves between your servers and how aggressively you need real-time sync, fault tolerance, and horizontal scale.
| opHA (classic) | opHA Message Bus | |
|---|---|---|
| Best for | Small to mid-sized distributed deployments | Large MSPs, telcos, ISPs, multi-tenant environments |
| Sync model | Scheduled pull from pollers to primary | Real-time message streaming between peers |
| Event delivery | Periodic | Instant, with replication and zero event loss |
| Scale ceiling | Hundreds of nodes per primary | Thousands of nodes per peer, unlimited peers |
| Failover | Manual or scripted | Automated primary poller failover |
| Tenant isolation | Yes | Yes, with stronger isolation primitives |
Architecture
How opHA fits into your NMIS deployment
From a single primary with a handful of pollers, to a globally distributed message bus deployment, opHA scales without changing the way your team uses NMIS.
Built For Your Team
Trusted by the teams that cannot afford to miss a thing
Multi-tenant monitoring at MSP scale
Manage hundreds of customer environments with tenant isolation, centralised visibility, and per-customer poller deployment. Sell monitoring as a service without sharing data across customers.
- Purpose-built multi-tenancy with hard data isolation
- Centralised management across every tenant
- Scalable poller deployment per client site
Carrier-grade distributed monitoring
Distributed monitoring across multiple data centres and points of presence, with real-time event sync that meets telco uptime expectations.
- Zero event loss across distributed infrastructure
- Real-time sync between data centres and PoPs
- Fault tolerance built for carrier-grade SLAs
Global visibility from a single NOC
Deploy pollers at each office, campus, or data centre. opHA consolidates monitoring from every site into a single view for your central team.
- Per-site pollers with central consolidation
- Automated failover for continuous monitoring
- Geographic distribution without bandwidth overhead
NMIS Ecosystem
Every module benefits from opHA
NMIS Core Platform
opHA extends NMIS into a distributed, highly available architecture. Your existing configuration, device models, and monitoring policies work unchanged.
opCharts Consolidated View
opCharts integrates with opHA to provide a single pane of glass across your distributed deployment. Dashboards, maps, and charts reflect data from every poller in real time.
opEvents Distributed Correlation
opEvents receives events from all pollers via opHA. Correlation, deduplication, and escalation all work across the entire estate, not one server at a time.
All Commercial Modules
opConfig, opReports, opFlow, and opAddress all benefit from opHA's centralised configuration and distributed data fabric.
Ready to scale your NMIS deployment?
Talk to our team about how opHA, and the opHA Message Bus, can support your distributed monitoring requirements.
opHA is part of the NMIS 9 platform. For real-time, message-bus-based deployments, see opHA Message Bus.