A rather simple, but effective and easy-to-setup service discovery (SD) mechanism with near-zero maintenance costs can be build by utilizing the AWS Private Hosted Zone (PHZ) feature. PHZs allows you to connect a Route53 Hosted Zone to a VPC, which in turn means that DNS records in that zone are only visible to attached VPCs.

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Inspired by the “JavaScript Equality Table“ I created the same table for PHP:

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!!! ATTENTION: Highly unstructured braindump content !!!

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In an earlier first post I demonstrated a way to connect an external slave to a running RDS instance. Later then AWS added the native possibility to import and export via replication.

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Update: Using an external slave with an RDS master is now possible as well as RDS as a slave with an external master

Connecting external MySQL slaves to AWS RDS mysql instances is one of the most wanted features, for example to have migration strategies into and out of RDS or to support strange replication chains for legacy apps. Listening to binlog updates is also a great way to update search indexes or to invalidate caches.

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Disclaimer: German.

Auch Aaron Swartz zu Ehren - veröffentliche ich meine Diplomarbeit “Wissensmanagement als integraler Bestandteil des Software Engineerings - Konzeption einer Vorgehensweise unter Einbindung agiler Modelle am Beispiel des Web 2.0-Unternehmens Jimdo”.

In der Diplomarbeit wird untersucht, inwiefern die Anwendung agiler und Lean- Softwarentwicklungsmethoden wie Scrum, Software Kanban, Extreme programming und DevOps schon Wissensmanagement implizit “betreiben”.

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While introducing rspec-puppet into a big and grown puppet codebase at Jimdo we needed to debug stuff and get more verbose output while writing the first tests. As the interwebs aren’t very chatty about the topic, here for all the distressed googlers:

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the last weekend i attended to devopsdays in hamburg. first thanks to patrick debois and marcel wegermann for doing a really great job of conference organisation. and thanks to the sponsors making the location, food and beer possible ;)

DevOps is a relatively young movement of people that think developers, operations and also QA have to work together instead of
creating departments and isles. It’s about communication and automation of software delivery processes.

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mysql> prompt (\u@\h) [\d]>  
PROMPT set to '(\u@\h) [\d]>'  
(debian-sys-maint@localhost) [cms]>

persistent in bashrc:

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export MYSQL_PS1='(\u@\h) [\d]> '

Today I finally managed to set up an incremental backup for my workstation. What do we need? Well, nothing more than rdiff-backup, an opensource command line tool with all the powers you need.

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