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Category: HowTos
10 January 2017
Network Virtualization with VXLAN and Linux
VXLAN stands for “Virtual eXtensible Local Area Network”. Standardized in RFC 7348 in August 2014, VXLAN is also available today as a virtual network interface in current Linux kernels. But what is VXLAN? What is VXLAN? When one reads the keywords “Virtual” and “LAN”, most rightly think of VLAN. Here, a large physical network is […]
06 December 2016
[Howto] Centralized and Semantic Logging for PostgreSQL®
Introduction Today, there is no need to argue why centralized logging is useful or even necessary. Most medium-sized companies now have centralized logging or are currently implementing it. Once the infrastructure is in place, it is important to use it effectively and efficiently! Especially as an infrastructure operator or service provider, the goal is to […]
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 […]