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25%
Manage OpenVPN keys with Easy-RSA
06.10.2019
Home »  Archive  »  2019  »  Issue 53: Secur...  » 
Lead Image © Orlando Rosu, 123rf.com
the Debian-based, distributions install it along with openvpn – one exception being Ubuntu, which only offers easy-rsa starting with Cosmic Cuttlefish (Ubuntu version 18.10) [3]. The successor, Easy-RSA 3
25%
Validating Docker containers
05.02.2019
Home »  Archive  »  2019  »  Issue 49: Anato...  » 
Lead Image © 36clicks, 123RF.com
Version: "2.0.0" 02 03 globalEnvVars: 04 - key: "MYSQL_USER" 05 value: "dev" 06 - key: "MYSQL_PASSWORD" 07 value: "123456" 08 09 commandTests: 10 11 # Is the MySQL package installed? 12 - name: "MySQL package
25%
TinyDNS
02.03.2012
Home »  Articles  » 
 
shows this for the MX entry: @domainname.com::mail.domainname.com:10:3600 If you ran a similar MX command again adding mail2 , you’d add a secondary MX with a different priority (a.k.a. delivery
25%
Warewulf 4 – Environment Modules
20.03.2023
Home »  HPC  »  Articles  » 
.exe   QUAD_MPI   FORTRAN90/MPI version   Estimate an integral of f(x) from A to B.   f(x) = 50 / (pi * ( 2500 * x * x + 1 ) )     A        =    0.00000       B        =    10.0000       N        =      9999999
25%
ASCII-based monitoring tools
30.05.2021
Home »  Archive  »  2021  »  Issue 63: Autom...  » 
Lead Image © tele52, 123RF.com
A long time ago, I was a system administrator for a couple of HPC systems, but I also inherited two Hewlett-Packard (HP) N-class servers (mainframes). Along with two WORM storage units, these were
25%
Desktop Supercomputers: Past, Present, and Future
17.03.2021
Home »  HPC  »  Articles  » 
% of the maximum. The maximum usable wattage values are then 1,920W (20A), 1,440W (15A), and 960W (10A). Twenty-amp circuits are common in offices and homes. However, in homes, these circuits are sometimes broken up
25%
How Open Source Helped CERN Find the Higgs Boson
04.10.2018
Home »  Archive  »  2018  »  Issue 47: Findi...  » 
Tim Bell
running a massive cloud with about 320,000 cores and around 9,200 hypervisors; it's called CERN Cloud. "We will gradually continue to expand that, adding more of the bare metal side of things," Bell said
25%
Manage status messages in CouchDB with MapReduce
27.09.2024
Home »  Archive  »  2024  »  Issue 83: Storage  » 
Photo by Austin Distel on Unsplash
Design Document with Views { "_id": "_design/queries", "_rev": "6-856a5c52b1a9f33e136b7f044b14a8e6", "language": "javascript", "views": { "by-timestamp": { "map": "function (doc) {\n
25%
Isolate workloads from Docker and Kubernetes with Kata Containers
05.02.2019
Home »  Archive  »  2019  »  Issue 49: Anato...  » 
Photo by Stephen Pedersen on Unsplash
, to warm up both the image cache and the Linux cache. Listing 3 Benchmark #!/bin/bash N=100 time for i in {1..$N}; do CID=$(docker run --name server-$i -d nginx) docker exec server-$i /bin
25%
Tuning SSD RAID for optimal performance
09.08.2015
Home »  Archive  »  2015  »  Issue 28: SSD RAID  » 
Lead Image © ELEN, Fotolia.com
capacity is available in RAID 10, but with many random writes, you see major benefits compared with RAID 5. Figure 3 clearly shows the weakness of RAID 5 in terms of write IOPS. Likewise, the increased

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