Job Opening: Debian Linux System Administrator at Kumina

we are hiring
March 28th, 2014

Kumina is expanding and looking for new employees.

More...


The Collectd encrypted packet format

logstash
March 21st, 2014

Yesterday, Logstash 1.4.0 was released containing many improvements, one of which was contributed by us. We’ve implemented signature verification and packet decryption in the collectd input plugin. This blogpost will give an overview of how encryption and signing is used in the collectd binary protocol. If you want to implement your own collectd receiver, this is pretty interesting.

More...


Automated monitoring? Easy!

monitoring
February 11th, 2014

One of the things we take very serious here at Kumina is our monitoring. We’ve always done so, but even we must admit that during the starting years, we sometimes forgot to include all possible checks for a new service or host. And it sucks when you forget to setup the monitoring for a specific item, because you generally only find out about it when it’s actually down already… We like to check as much as possible (if not everything). Here’s an explanation on how we actually deploy our monitoring and trending based on the applications that are installed.

More...


Icinga check for Linux.Fokirtor

icinga
November 15th, 2013

We’ve written a check for detecting the Fokirtor backdoor.

More...


Changing the VLAN-ID of an interface in a bridge with minimal downtime

datacenter
August 23rd, 2013

Our upstream-provider needed to change the VLAN-ID of our uplink to be in line with their policies. We wanted to do this with minimal downtime. Check out the script we ran on the gateway machines, the VLAN-IDs were changed almost instantly, total unavailability was less than a second.

More...


On our new DNS infrastructure (and DNSSEC)

Kumina DNS Infrastructure
August 15th, 2013

Recently we’ve been busy implementing a new DNS infrastructure for our resolvers as well as our authoritative servers. We wanted to be ready for future developments like DNSSEC and we wanted to re-new this important part of our infrastructure for a while. This blog-post gives an overview of our new setup.

More...


Debian and Trac: How to solve the ‘No module named svn’ Trac error.

coding
June 11th, 2013

How to solve the ‘No module named svn’ Trac error.

More...


Check and detect Linux/CDorked.A infections

icinga
May 8th, 2013

We’ve created a simple check to detect Linux/CDorked.A infections on webservers.

More...


Kumina helps companies innovate with the power of open source software. As specialists in managed IT operations since 2007, our mission is simple: building and managing the perfectly tailored technical infrastructures that allow our clients to thrive.

With fully managed solutions, we help our customers unlock the full potential of the cloud and Kubernetes. Our team also supports organisations with IT consulting and Kubernetes training courses. Learn more about our services or get in touch, we would love to hear about your business and projects.