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10 August 2015
[Howto] Icinga2 with Graphite and Grafana on Debian
In this blog, we describe the integration of Icinga2 into Graphite and Grafana on Debian. What is Graphite Graphite stores performance data over a configurable period. Services can send metrics to Graphite via a defined interface, which are then stored in a structured manner for the desired period. Possible examples of such metrics include CPU […]
25 February 2014
Postfix Architecture Overview
The Postfix mail transport agent consists of several subcomponents, services, and queues, which are listed in detail in the documentation. We have transferred the most important functions to a diagram for greater clarity. The page postfix.org/OVERVIEW.html presents and explains the individual parts of Postfix and their functions: services, queues, etc. Although some of the relationships […]
31 March 2010
[Howto] Debian Preseed mit Netboot
The vast majority of Debian installations are simplified with the use of Preseeding and Netboot. Friedrich Weber, a school student on a work experience placement with us at our German office has observed the process and captured it in a Howto here: Imagine the following situation: you find yourself with ten to twenty brand new […]
25 February 2010
[Howto] Introduction to Puppet
The administration of a large number of servers can be quite tiresome without a central configuration management. This article gives a first introduction into the configuration management tool, Puppet. Introduction In our daily work at the Open Source Support Center we maintain a large number of servers. Managing larger clusters or setups means maintaining dozens […]