credativ® Blog
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Category: HowTos
01 October 2019
Client certificates for Icinga2 API authentication
There are two ways to authenticate yourself as a client to Icinga2. On the one hand there is the possibility to authenticate yourself by username and password. The other option is authentication using client certificates. With the automated query of the Icinga2 API, the setup of client certificates is not only safety-technically advantageous, but also […]
18 April 2019
The XEN hypervisor and microcode updates
One would think that microcode updates are basically unproblematic on modern Linux distributions. This is fundamentally correct. Nevertheless, there are always edge cases in which distribution developers may have missed something. Using the example of Ubuntu 18.04 LTS “Bionic Beaver” in connection with the XEN Hypervisor this becomes obvious when it comes to processors microcode […]
15 April 2019
PostgreSQL® anywhere — via Kubernetes with some help from OpenEBS
In this article we will look at the highly available operation of PostgreSQL® in a Kubernetes environment. A topic that is certainly of particular interest to many of our PostgreSQL® users. Together with our partner company MayaData, we will demonstrate below the application possibilities and advantages of the extremely powerful open source project – OpenEBS. […]
27 January 2019
Integrating Patroni into Debian
Patroni is a PostgreSQL high availability solution with a focus on containers and Kubernetes. Until recently, the available Debian packages had to be configured manually and did not integrate well with the rest of the distribution. For the upcoming Debian 10 “Buster” release, the Patroni packages have been integrated into Debian’s standard PostgreSQL framework by […]
10 August 2015
[Howto] Icinga2 with Graphite and Grafana on Debian
In this post we describe how to integrate Icinga2 with Graphite and Grafana on Debian stable (jessie). What is Graphite? Graphite stores performance data on a configurable period. Via a defined interface, services can send metrics to Graphite, which are then stored for the designated period. Possible examples of the type of metrics that it […]