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19%
Monitor your nodes with collectl
30.11.2025
Home »  Archive  »  2012  »  Issue 09: Windo...  » 
© nobeastsofierce, 123RF.com
YZCD 03 # DaemonOpts: -f /var/log/collectl -r00:00,7 -m -F60 -s+YZCD --iosize 04 ################################################################################ 05 # Collectl: V3.6.1-4 HiRes: 1 Options
19%
First steps in IT automation by Rex
11.06.2014
Home »  Archive  »  2014  »  Issue 21: Manag...  » 
Lead Image © Konstantin Chagin , 123RF.com
_system_release = '12.04' 17 $eth0_mac = '08:00:27:c4:a1:d8' 18 $VirtInfo = { 19 virtualization_role => 'guest' 20 virtualization_type => 'virtualbox' 21 } 22 $memory_shared = '0' 23 $Network = { 24 networkdevices
19%
Failure to Scale
03.07.2013
Home »  HPC  »  Articles  » 
and the parallel portion 800 seconds. Amdahl’s Law says the speedup is 1.00 (i.e., the starting point). Notice that as the number of processes increase, the wall clock time of the parallel portion decreases
19%
Why Good Applications Don’t Scale
13.10.2020
Home »  HPC  »  Articles  » 
. Amdahl’s Law says the speedup is 1.00 (i.e., the starting point). Notice that as the number of processors increases, the wall clock time of the parallel portion decreases. The speedup a increases from 1.00
19%
News for Admins
03.04.2024
Home »  Archive  »  2024  »  Issue 80: Threa...  » 
 
: https://ciq.com/. Apple's PQ3 Brings Post-Quantum Security to iMessage The Apple security team has announced PQ3, a cryptographic security upgrade in iMessage. According to the announcement (https ... In the news: CIQ Offers Long-Term Support for Rocky Linux on AWS; Apple's PQ3 Brings Post-Quantum Security to iMessage; Google Open Sources Magika File-Type Detection System; Microsoft Announces Sudo
19%
SMART storage device monitoring
29.09.2020
Home »  Archive  »  2020  »  Issue 59: Custo...  » 
Lead Image © Sk Design, Fotolia.com
: Samsung SSD 840 Series Serial Number: S19HNSAD620520T LU WWN Device Id: 5 002538 5a0050931 Firmware Version: DXT08B0Q User Capacity: 120,034,123,776 bytes [120 GB] Sector Size: 512 bytes logical
19%
SMART Devices
14.08.2020
Home »  HPC  »  Articles  » 
 OF INFORMATION SECTION === Model Family:     Samsung based SSDs Device Model:     Samsung SSD 840 Series Serial Number:    S19HNSAD620520T LU WWN Device Id: 5 002538 5a0050931 Firmware Version: DXT08B0Q User Capacity:    120
19%
Udev with virtual machines
14.11.2013
Home »  Archive  »  2013  »  Issue 17: Cloud...  » 
Lead Image © orangeline, 123RF.com
/bin/env python 02 import sys 03 04 dict = {'enp2s0':'eth0', 'enp2s1':'eth1'} 05 06 if sys.argv[1] in dict: 07 print dict[sys.argv[1]] 08 else: 09 print(sys.argv[1]) 10 exit(0) Workaround
19%
TCP Stealth hides open ports
10.04.2015
Home »  Archive  »  2015  »  Issue 26: OpenS...  » 
Lead Image © momo5287, 123RF.com
if (setsockopt(sock, IPPROTO_TCP, TCP_STEALTH, secret, sizeof(secret))) { 08 printf("setsockopt() failed, %s\n", strerror(errno)); 09 return 1; 10 } 11
19%
Build a honeypot with real-world alerts
01.08.2019
Home »  Archive  »  2019  »  Issue 52: Stop...  » 
Lead Image © Bruce Rolff, 123RF.com
:FORWARD ACCEPT [0:0] 05 :OUTPUT ACCEPT [125:13440] 06 -A INPUT -m state --state RELATED,ESTABLISHED -j ACCEPT 07 -A INPUT -p icmp -j ACCEPT 08 -A INPUT -i lo -j ACCEPT 09 -A INPUT -p tcp -m state --state

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