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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HowTo: Reset a cryptostick

nitrokey
February 21st, 2011

Resetting a cryptostick is possible after all!

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Job opening

we're hiring
February 14th, 2011

Want to work at Kumina? We’re looking for someone!

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Kumina designs, builds, operates and supports Kubernetes solutions that help companies thrive online. As Certified Kubernetes Service Partner, we know how to build real solutions.