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17%
Automated OpenStack instance configuration with cloud-init and metadata service
05.02.2019
Home »  Archive  »  2019  »  Issue 49: Anato...  » 
Lead Image © jeka81, 123RF.com
: $ curl http://169.254.169.254/openstack 2012-08-10 2013-04-04 2013-10-17 2015-10-15 2016-06-30 2016-10-06 2017-02-22 To retrieve a list of supported versions for the EC2-compatible metadata API, enter
17%
Warewulf Cluster Manager – Master and Compute Nodes
22.05.2012
Home »  HPC  »  Articles  » 
flexible, and is very fast at imaging nodes. The latest version of Warewulf, the version 3.x series, has some new and updated capability to make things even easier and more flexible. Warewulf supports
17%
Small-board computers
17.02.2015
Home »  Archive  »  2015  »  Issue 25: Safe...  » 
Lead Image © Author, 123RF.com
of memory Fast Ethernet (100Mbps) MicroSD slot for local storage Two USB ports HDMI port General-purpose I/O pins (GPIO) This little SBC only consumes about 3W under load
17%
The OpenResty distribution for Nginx
20.03.2014
Home »  Archive  »  2014  »  Issue 19: Perim...  » 
Lead Image © Kirill Kurashov, 123RF.com
of its low resource consumption and good performance. The Apache web server has also added Mod-Lua to its core distribution [3]. The OpenResty modules make it possible to use Lua instructions
17%
Easy configuration management with Puppet
18.07.2013
Home »  Archive  »  2013  »  Issue 15: What’...  » 
Warangkana Bunyarittongchai, 123RF
=> installed 04 } 05 file { "/etc/update-motd.d/10-mymotd": 06 ensure => "present", 07 source => "puppet:///modules/mypuppets/misc/10-mymotd", 08 owner => 'root', 09 group => 'root', 10
17%
Protecting the production environment
30.05.2021
Home »  Archive  »  2021  »  Issue 63: Autom...  » 
Photo by Intricate Explorer on Unsplash
that Puppet cannot detect. A typical example in the Unix environment is the sequence for setting up a service. You have to (1) install the package, (2) adjust its configuration file, and (3) start
17%
Getting a free TLS certificate from Let's Encrypt
13.06.2016
Home »  Archive  »  2016  »  Issue 33: IPv6...  » 
Lead Image © Stuart Miles, 123RF.com
information [2]. You can use Let's Encrypt for any website regardless of the web server. For my home-grown sites, I use one ESXI VMware server and deploy pre-installed virtual machines using TurnKey Linux [3
16%
Zuul 3, a modern solution for CI/CD
05.12.2019
Home »  Archive  »  2019  »  Issue 54: NVMe...  » 
Lead Image © lightwise, 123RF.com
Zuul 3 brings a new approach to the DevOps challenge. (For more on these important DevOps concepts, see the "CI and CD" box.) Whereas other CI/CD tools like Jenkins, Bamboo, or TeamCity focus ... The Zuul 3 gating system is a free and flexible solution for continuous integration, delivery, and deployment. ... Zuul 3 ... Zuul 3, a modern solution for CI/CD
16%
OpenNebula – Open source data center virtualization
14.11.2013
Home »  Archive  »  2013  »  Issue 17: Cloud...  » 
Lead Image © Sternenhimmel, fotolia.com
" : "CONNECTION > 2000", 18 19 "type" : "CHANGE", 20 "adjust" : 2, 21 22 "period_number" : 3, 23 "period" : 10 24 }, 25 { 26 // -10 percent VMs when
16%
A Distributed SQL Database
03.08.2023
Home »  Archive  »  2023  »  Issue 76: Energ...  » 
Photo by Sonika Agarwal on Unsplash
, author, publication_date, price) VALUES ('1984', 'George Orwell', '1949-06-08', 14.99); SELECT * FROM books; As long as a majority of the replicas (in this case, at least two out of three) are operational

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