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13%
Rethinking RAID (on Linux)
16.03.2021
Home »  HPC  »  Articles  » 
, ioengine=libaio, iodepth=32 fio-3.12 Starting 1 process Jobs: 1 (f=1) test: (groupid=0, jobs=1): err= 0: pid=5872: Sat Jan  9 16:35:08 2021   read: IOPS=251k, BW=979MiB/s (1026MB/s)(2045MiB/2089msec
13%
Greylisting with Postgrey
22.06.2012
Home »  Articles  » 
 
: Qmail Delivery Retry Events Delivery Attempt Seconds D-HH:MM:SS 1 0 0-00:00:00 2 400 0-00:06:40 3 1600 0-00:26:40 4
13%
Speed up your MySQL database
11.02.2016
Home »  Archive  »  2016  »  Issue 31: Tunin...  » 
Lead Image © Mikhail Dudarev, 123RF.com
( NULL, 'Row 3', NULL); SELECT SLEEP(1); 08 09 mysql> INSERT INTO data_random VALUES ( MD5(CURRENT_TIMESTAMP()), 'Row 1', NULL); SELECT SLEEP(1); 10 mysql> INSERT INTO data_random VALUES ( MD5(CURRENT
13%
Server administration with Cockpit
29.09.2020
Home »  Archive  »  2020  »  Issue 59: Custo...  » 
Photo by Joshua J. Cotten on Unsplash
at the blog [3] reveals that new versions of Cockpit are released approximately every two weeks. In an article from 2015 [4], ADMIN looked into the topic of managing Linux servers with Cockpit; since then
13%
Trivy security scanner
04.04.2023
Home »  Archive  »  2023  »  Issue 74: The F...  » 
Lead Image © MPower, photocase.com
(NIST) National Vulnerability [2] or the Aqua Vulnerability [3] database. Figure 1: An image scan with Trivy generates a long list of vulnerabilities
13%
Exploring the filesystem that knows everything
14.03.2013
Home »  Archive  »  2013  »  Issue 13: IPv6...  » 
Lucy Baldwin, 123RF
details as well [3]. The files in the Linux /proc directory also have a pleasingly hackable penchant for being directly readable as plain text, as opposed to more binary-centric proc implementations
13%
Fundamentals of I/O benchmarking
11.04.2016
Home »  Archive  »  2016  »  Issue 32: Measu...  » 
Lead Image © Kheng Ho Toh, 123RF.com
B/s ( 2.2 Gbit/s) 128 KiB blocks: 2176.5 IO/s, 272.1 MiB/s ( 2.3 Gbit/s) 256 KiB blocks: 751.2 IO/s, 187.8 MiB/s ( 1.6 Gbit/s) 512 KiB blocks: 448.7 IO/s, 224.3 MiB/s ( 1.9 Gbit/s) 1 MiB blocks
13%
Installing and operating the Graylog SIEM solution
13.12.2018
Home »  Archive  »  2018  »  Issue 48: Secur...  » 
Lead Image © Leo Blanchette, 123RF.com
SeverityValue = 3; else $SyslogSeverityValue = 6; 20 21 # The name of the file is also sent with the file 22 Exec $FileName = file_name(); 23 24 # The SourceName variable is set by default to 'NXLOG'. To send
13%
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
13%
Serverless run times with custom Bash AWS Lambda layers
25.03.2020
Home »  Archive  »  2020  »  Issue 56: Secur...  » 
Lead Image © Eric Gevaert, 123RF.com
. In this article, I explore a relatively new addition to Lambda functions in AWS called "layers" and, with the use of a Bash layer provided on the GitHub page by author Graham Krizek [3], I run a Bash script

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