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26%
Bare metal lifecycle management with six open source tools
07.10.2025
Home »  Archive  »  2025  »  Issue 89: Autom...  » 
Photo by Beth Macdonald on Unsplash
Bifrost [5] (bye-frost) also has a fairly specific area of application and is now mostly rolled out as part of an OpenStack installation with Kayobe [6]. If you hear the word OpenStack and immediately feel
26%
Testing Disaster Recovery Plans with Chaos Engineering
02.06.2026
Home »  Archive  »  2026  »  Issue 93 Disast...  » 
Photo by Mark Timberlake on Unsplash
from the LitmusChaos Hub [6]. Developers or providers can exchange their Chaos testing configurations on the platform. As of July 2025, more than 50 different predefined experiment configurations were
26%
Virtualize Browsers, Apps, and Desktops
02.06.2026
Home »  Archive  »  2026  »  Issue 93 Disast...  » 
Lead Image © denis cristo, 123RF.com
that are based on Coturn [6], another open source project that implements a free STUN and TURN server. In the following examples, I stick to ICE Lite mode and assume that clients can reach the server's UDP ports
26%
Manage VMs and Containers with Harvester
06.08.2026
Home »  Archive  »  2026  »  Issue 94 OpenSt...  » 
Lead Image © Lightwise, 123RF.com
some trial and error, also worked in my environment. The provider's developers have apparently renamed a few variables between earlier versions and the current version 1.6, which is not immediately clear
26%
Isolating Containers from Container Attacks
06.08.2026
Home »  Archive  »  2026  »  Issue 94 OpenSt...  » 
Photo by Patrick Humm on Unsplash
on the system, the larger the attack surface. Specialized operating systems such as Amazon's Bottlerocket [4], Talos Linux [5], or Flatcar Container Linux [6] were specifically developed for running containers
26%
Monitoring your cluster with a home-grown OCF agent
30.11.2025
Home »  Archive  »  2012  »  Issue 07: Xen v...  » 
© Aleksey Mnogosmyslov, 123RF.com
are in place. If necessary, it will issue an error message and quit. Listing 6 contains a validate function that would work for Asterisk – apart from the sipuri section, this function is very generic, so you
26%
Get the best out of your bandwidth with tc
30.11.2025
Home »  Archive  »  2012  »  Issue 10: Traff...  » 
© Russell Shively, 123RF.com
/3 weight 409600bit allot 1514b level 0 ewma 5 avpkt 920b maxidle 1.6ms Sent 185501283289 bytes 158312905 pkt (dropped 1492, overlimits 451813147 requeues 0) rate 0bit 0pps backlog 0b 0p requeues 0
26%
Script utilities in depth: grep, awk, and sed
30.11.2025
Home »  Archive  »  2011  »  Issue 4: Secure...  » 
© jirkaejc, 123RF.com
). The following command finds all lines that begin with an opening tag and end with the corresponding closing tag: grep "^<([^/ >]+)[^>]*>.*$" something.htm The command displays lines 1, 2, 6, 7, and 10
26%
Ceph Dashboard at a Glance
02.06.2026
Home »  Archive  »  2026  »  Issue 93 Disast...  » 
Lead Image © Prin Pattawaro, 123RF.com
in a short space of time. Object Storage Daemons (OSDs) [6], for example, can fail because the underlying drive has failed. In this case, placement groups [7] change their states, resulting in rebalancing
26%
Closing the CephFS Trust Gap
06.08.2026
Home »  Archive  »  2026  »  Issue 94 OpenSt...  » 
Lead Image © lightwise, 123RF.com
QEMU 5.0 libvirt 6.2 Guest kernel 5.4 Instance memory File-backed or huge pages Before creating shares, confirm that the compute node

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