Our fix for Squeeze-backports “Expired Release file”

code
April 6th, 2011

Quick fix for the squeeze-backport expired Release file, if you use your own apt proxy.

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On our puppet module design

puppet
April 6th, 2011

An explanation on how we build our modules. Fairly high level.

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Monitoring DNS server synchronicity

code
April 4th, 2011

We, along with some customers, have our authoritative DNS setup with 1 PowerDNS master(which is unreachable over the internet), running poweradmin, and 2 BIND9 slaves(which are ns1 and ns2). This setup works great, but there is a bug in (older versions of) PowerAdmin and one in BIND that together can cause some havoc.

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ANNOUNCEMENT: Microsoft Windows support coming soon!

April 1st, 2011

Kumina is happy to announce it’s in the process of switching all its managed servers from Debian Linux to Microsoft Windows. Due to high demand, it was decided last January that this would be a good time to switch from Linux to Windows.

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Facter facts for memory in bytes

code
March 22nd, 2011

By default facter returns the free and total memory and swap of a machine only in GB or MB. To remedy this we rewrote the memory.rb bundled with Puppet to return the numbers in bytes.

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Failover without Hetzner addresses: the HostHenker

HostHenker
March 18th, 2011

HostHenker is a small shell script, which based on whether a daemon is running, adds an entry to /etc/hosts for this host or a fallback host.

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Hetzner Failover IP OCF script part III: When HTTP attacks

failover
March 16th, 2011

Our OCF script for failovers at Hetzner worked flawlessly the last month. Last week, however, a problem arose we did not anticipate.

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Hetzner Failover IP OCF script part deux: local DNS resolving

failover
February 23rd, 2011

A second OCF script, which can be used to maintain local DNS entries when using a Hetzner failover setup.

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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.