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27%
Building a HPC cluster with Warewulf 4
04.04.2023
Home »  Archive  »  2023  »  Issue 74: The F...  » 
Photo by Andrew Ly on Unsplash
the ntpstat utility on the head node and then running it: $ sudo yum install ntpstat $ ntpstat synchronised to NTP server (162.159.200.123) at stratum 4 time correct to within 21 ms polling server every
27%
Manage OpenVPN keys with Easy-RSA
06.10.2019
Home »  Archive  »  2019  »  Issue 53: Secur...  » 
Lead Image © Orlando Rosu, 123rf.com
. By the way, easyrsa export-p12 exports a key pair in PKCS12 format. The easyrsa gen-req easyrsa sign-req commands give Easy-RSA full-fledged PKI management, and the build-client-full build
27%
Parallel I/O Chases Amdahl Away
12.09.2022
Home »  HPC  »  Articles  » 
 array size (nx x ny) per file nx = 200 ny = 200   nfiles = 5    # Number of files to write   # Loop over number of files and write to files for i in range(nfiles):       filename = "file_" + str(i)   # filename       a
27%
Take your pick from a variety of AWS databases
14.08.2017
Home »  Archive  »  2017  »  Issue 40: Lean...  » 
Lead Image © Claudia Paulussen, Fotolia.com
: aws rds create-db-instance --engine oracle-se2 --multi-az --db-instance-class db.m4.large --engine-version 12.1.0.2.v5 --license-model license-included --allocated-storage 100 --master
27%
Security analysis with Security Onion
04.04.2023
Home »  Archive  »  2023  »  Issue 74: The F...  » 
Photo by Mick Haupt on Unsplash
, you are at the lower limits of the recommended setup with 200GB of disk space, 12GB of RAM, and four cores. For the installation, download the ISO file mentioned earlier [4] to your virtualization
27%
Quick UDP Internet connections
06.10.2022
Home »  Archive  »  2022  »  Issue 71: Kuber...  » 
Photo by Jonathan Chng on Unsplash
times the size of the previously received request. The payload must be at least 1,200 bytes in the initial packet; otherwise, padding is required. A token exchange before compute-intensive operations
27%
Storage protocols for block, file, and object storage
30.05.2021
Home »  Archive  »  2021  »  Issue 63: Autom...  » 
Photo Johannes Plenio on Unsplash
. Additionally, NVMe simplifies commands on the basis of 13 specific NVMe command sets designed to meet the unique requirements of NVM devices. NVMe latency was already about 200ms less than 12Gb SAS when
27%
Develop your own scripts for Nmap
03.12.2015
Home »  Archive  »  2015  »  Issue 30: OpenD...  » 
Lead Image © Raman Maisei, 123RF.com
something like Listing 2. Listing 2 Sample Output Starting Nmap 6.47 (http://nmap.org) at 2015-03-12:00:00 CET Nmap scan report for targethost (192.168.1.100) Host is up (0.023s latency). r
27%
Documentation Tools for Admins
20.05.2014
Home »  Archive  »  2014  »  Issue 20: IPv6...  » 
Lead Image © Sorin Colac, 123RF.com
the GPL and the AGPL, respectively. Wikimania When it comes to internal company communications, MediaWiki continues to be the tool of choice; the statistics website Ohloh counts nearly 200 code
27%
Red Hat Enterprise Linux 8 pre-series test
07.06.2019
Home »  Archive  »  2019  »  Issue 51: Self-...  » 
Lead Image Photo by Filip Mroz on Unsplash
in the kernel is unsuitable for today's requirements given network cards capable of 200Gbps and more. The kernel developers have long since used all sorts of hacks to squeeze the last bit of performance out

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