An introduction to container technology

March 27th, 2017

Container technology is causing a structural change in the entire cloud-computing world. A change we embrace at Kumina. In this first post from our blog post series ‘Containerisation with Kubernetes and Docker’, we’ll provide you with a simple introduction to the concept ‘containerisation’ and about how containers relate to virtual machines (VM).

More...


Kumina Kubernetes presentation including live demonstration at Den Bosch Linux User Group

March 24th, 2017

Wednesday April 5, our director Tim Stoop will give a Kubernetes presentation at the Den Bosch Linux User Group. In this presentation, you’ll get a good idea of the basics of container management with Kubernetes. In our tech talk we’ll take you through the history and present use of containers and explain you ll the basics of Kubernetes and its components. Followed by a live demonstration on our pi cluster, so you can see Kubernetes in action. Don’t hesitate to attend our talk: attendance is free of charge!

More...


Enthousiaste accountmanager/sales medewerker gezocht!

March 14th, 2017

Ben jij ambitieus, leergierig, commercieel ingesteld en ga je een uitdaging niet uit de weg? Heb je affiniteit of ervaring met de IT-branche en zie jij jezelf als accountmanager en sales medewerker bij een zakelijke IT-dienstverlener werken? Dan ben jij misschien de perfecte aanvulling op ons team.

More...


Using Prometheus to monitor Postfix mail queues

February 27th, 2017

Over the last couple of months we’ve published several blog posts to announce the release of various Open Source metrics exporters for Prometheus. The development of these exporters is an on-going process at Kumina, as we’re working towards replacing our existing Nagios-based monitoring setup with Prometheus. oday we’re proud to present to you our own Prometheus metrics exporter for Postfix, written in Go.

More...


A Prometheus exporter for Dovecot

January 16th, 2017

To start this year’s series of contribution to the open source community, we’re proud to announce the release of yet another tool that we use to monitor our production setup, namely a Prometheus metrics exporter for the Dovecot POP/IMAP mail server. If your email setup is also based on Dovecot and use Prometheus for monitoring, we’d like to invite you to give this exporter a try.

More...


KumiNews 2016: The latest and the future at a glance

January 2nd, 2017

Kumina can look back on a successful year. A lot happened at Kumina these past 12 months. We carried out challenging new projects and started new collaborations with amazing organisations. Behind the scenes, we worked hard on optimising and extending our services. We also welcomed new colleagues at our team. Read everything about the latest developments at Kumina in 2016 and about our future plans.

More...


Open source release ‘promacct’: Network traffic accounting using Prometheus

November 14th, 2016

Over the last couple of months we’ve been working on replacing and improving our existing monitoring and trending setup with Prometheus. After searching online, we haven’t been able to find a Prometheus metrics exporter that could act as a drop-in replacement for pmacct, which is why we’ve decided to develop it ourselves, called promacct. Where proamcct differs from pmacct is that instead of periodically storing results to a database, it provides access to its metrics over HTTP, allowing Prometheus to scrape it directly. Today we’re glad to announce that we’re releasing promacct as Open Source Software. Be sure to give it a try and let us know whether it works for you.

More...


Birdwatcher: Accessing Calico/BIRD metrics through Prometheus

October 28th, 2016

Today we’re happy to announce that Birdwatcher is now available on ​our company’s GitHub page. It accesses Calico/BIRD metrics through Prometheus. If you’re a user of both Calico and Prometheus, be sure to give it a try. Enjoy!

More...