Checking for rogue Apache modules

magnifying_glass
April 3rd, 2013

An Icinga check to detect rogue Apache modules.

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LOADays

loadays
March 1st, 2013

We’re an official Gold Sponsor of LOADays! We’ll also have presence there, so if you’re attending, do stop by and say hi!

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Booting a compressed FreeBSD system using TFTP inside KVM

freebsd
January 4th, 2012

Over the years, we have performed some experiments at Kumina to run the FreeBSD operating system inside KVM. The main problem with FreeBSD was the lack of proper virtio drivers. As of recently FreeBSD gained support for virtio, renewing our interest in testing FreeBSD.

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Fixing hanging Crypto Stick (and other USB peripherals) problems

nitrokey
December 28th, 2011

We had problems with our Crypto Stick ‘hanging’ randomly. An experimental patch from libusb fixes this. We have released packages with this fix.

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Spoofing MAC addresses using fakemac

code
December 14th, 2011

One of our customers uses a piece of software that depends on the MAC address of the running system. Unfortunately this application misbehaves when used on Amazon EC2 cloud computing. Therefore we have written a small piece of software called fakemac.

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Debugging puppet queueing

puppet
December 9th, 2011

Today we ran into a problem where the data put in ActiveMQ by the puppetmaster seemed corrupted in some way. When running the puppet queue daemon on the foreground (with –debug –verbose –no-daemonize), we noticed messages like these: info: Loaded queued catalog in 22.16 seconds debug: Searched for resources in 0.31 seconds err: Could not […]

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Check SSL certificates

ssl_checks
August 24th, 2011

This post is mostly a collection of commands that can help in juggling around SSL certificates and associated files. Check SSL certificates and make sure they are what you think they are. Especially when things do not go as expected, these commands are handy to have around.

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Preseeding a Debian Squeeze install putting all volumes in LVM

debian
August 17th, 2011

In our quest to automate even more, we have further automated our installations. We use Debian and don’t want to answer any (except for IP and hostname) question in the debian installer by hand. We’ve already pre-seeded the installer with a lot of answers, but the partitioning was always hard. Before, we formatted the first […]

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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.