How to: Troubleshoot Minion Connectivity and Functions

The OpenNMS Minion includes useful, built-in commands to verify configuration and debug access to management agents. In this Discourse article, Ronny Trommer, Community/Product Manager at The OpenNMS Group, shows how to test connectivity with the Minion, perform a health check, execute a remote ping to arbitrary FQDNs or IP addresses, execute remote DNS lookups, run SNMP [...]

By |2021-07-19T18:07:46+00:00July 22nd, 2021|

New docs: Where to find them, why they’re better, and how to contribute

If you look at the OpenNMS documentation, you’ll notice a change. Yes, it has a more polished appearance thanks to our new corporate branding, but it also has improved content and functionality as a result of our recent migration from AsciiDoctor to Antora for building the documentation. Migrating the documentation was a huge undertaking (we’ll discuss [...]

By |2021-06-10T20:18:04+00:00June 10th, 2021|

Not Your Dad’s OpenNMS

OpenNMS is an “old school open source project” in many ways. We’ve been around for 20 years, spent most of that time hacking on code, and our community feels like family. Typical of early open source projects, marketing and branding haven’t always been a top priority at OpenNMS. We’ve always had a logo (a logotype, if [...]

By |2021-05-12T05:17:46+00:00May 12th, 2021|

How to: Set up Distributed Monitoring with OpenNMS

Large, distributed networks can be difficult to reach and monitor from a central location, with challenges like firewalls, network address translation (NAT) traversal, overlapping IP address ranges, and locked-down environments. The OpenNMS Minion component extends the reach of Horizon/Meridian, so you can monitor systems and networks that would otherwise be inaccessible, for optimal visibility into every [...]

By |2021-04-15T17:06:44+00:00April 14th, 2021|

How to: Sizing Cassandra or Scylla for Newts

When you want to store large amounts of non-aggregated data (such as performance metrics), the round robin database (RRDtool) in OpenNMS may not be enough. OpenNMS provides a time-series data store (Newts) that works with Apache Cassandra or ScyllaDB to group metrics for more efficient storage and retrieval. It removes aggregation as a bottleneck to storage, [...]

By |2021-04-01T17:41:09+00:00April 1st, 2021|

Coming October 2020: Meridian 2020!

Based on Horizon 26.1.3, here’s a preview of some of the features we’re excited to bring to Meridian 2020: Enriched Flows, Better Messaging with Kafka Configure flows to include node metadata before forwarding to Kafka so that you can aggregate flow data or integrate it with your own custom database to persist all flows. New Kafka [...]

By |2020-09-03T18:23:44+00:00September 3rd, 2020|

Dev Jam 2020 – It’s a Wrap!

OpenNMS’ week-long annual IT conference, hackathon, and get-together for the global OpenNMS development community wrapped up Friday, July 31. Event Held in Minecraft The Covid-19 pandemic forced the normally in-person Dev Jam online, but with a twist. The event was held in Minecraft, customized with OpenNMS in mind. “OpenNMS has a community full of amazing people [...]

By |2020-08-20T14:01:09+00:00August 13th, 2020|

Tomorrow! OpenNMS Group at TM Forum’s Catalyst DIgital Showcase

OpenNMS Group will be participating in a session at TM Forum’s Catalyst Digital Showcase, along with partners Tech Mahindra and Cortex, on Thursday, July 30, 14:00-14:30, CEST. Presented by the TM Forum, a global industry association, catalysts are rapid-fire proof-of-concept projects that bring together large and small companies to create innovative solutions to common challenges, leveraging [...]

By |2020-07-29T12:45:49+00:00July 29th, 2020|

When Build Challenges Lead to Creative Solutions

A good build environment needs the right balance among complexity, speed, cost, and adaptability. With our recent move to CircleCI, OpenNMS has achieved that balance and even created two customized tools that others might find useful.

By |2020-07-09T16:56:44+00:00July 9th, 2020|
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