Blog

Network Attached Storage devices are very popular in small or medium offices or at home to store and share data.

Synology is one of the manufactures who build their devices with SNMP support to provide monitoring and managment capabilities. This makes it very easy to let OpenNMS keep an eye on yo...

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Load Thresholding

28, Aug Marcel Fuhrmann

System has high load!

Sounds anything but perfect. At least when we are talking about servers.

Fortunately, I don't have to explain what load is or how it's defined because there are many explanations on the internet. I found my favorite one on blog.scoutapp.com.

Once you read the articl...

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Statusbox

14, Aug Marcel Fuhrmann

Hey folks,

maybe you still remember the discussion about the Statusbox feature which Markus started at the Easterhack session. At that time I already liked the idea and to be honest, I was a little bit disappointed that it wasn't possible to complete it on this weekend. After some days I read...

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Introducing OpenNMS.js

07, Aug Benjamin Reed

Recently, we have been working on a project called "Helm" which will integrate a convenient OpenNMS alarm dashboard into Grafana. As part of that process, we have been developing a pure-JavaScript API for interacting with OpenNMS's ReST services called "OpenNMS.js".

OpenNMS.js is primarily de...

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As soon you provide more than a handful of services monitoring and centralized logging becomes essential. Especially when you run the Net-SNMP daemon with Docker you will notice your logs get spamed with some messages like Cannot statfs /run/docker/netns/...: Permission denied everytime you query...

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Now and then websites are really important for daily business and private life. You can nearly buy everything on websites, find information, meet friends, watch movies and much more. All the worse if your website is not working and you don't notice it or your customer first. But even if you already...

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A group of four students from Southampton Solent University, mentored by Dr. Craig Gallen, used OpenNMS to win the top prize at the TeleManagement Forum {open}:hack competition at the TM Forum Live conference in Nice, France.

{open}:hack Winner Team

Now, a little background is in order. Dr. Gallen founded Enti...

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Easterhack 2017 - Post Mortem

11, May Ronny Trommer

Easterhack 2017

Hello World, We had an Easterhack some days ago, as some of you remember. Marcel Fuhrmann and Markus von Rüden organised the event and Marcel provided a place in his home for the OpenNMS guys to hack, eat, drink, talk and have some fun. Here are a few things what we did (aside from playing Guitar...

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Process Monitoring with SNMP

09, May Marcel Fuhrmann, Ronny Trommer

Monitoring processes that don't provide network services is a default use case in network monitoring. Because they aren't providing network services, black box testing won't work- you need an agent on your system providing an inside view of your operating system. The Net-SNMP agent is easy to instal...

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Restart Detection

04, May Marcel Fuhrmann

Most of today's servers run in virtual environments and Java applications in containers. Sometimes these applications or servers unexpectedly restart and can often go unnoticed because a restart can be much faster then a polling cycle.

If SNMP is enabled, the hrSystemUptime can detect restarts fr...

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