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17%
Measuring the performance of code
04.08.2020
Home »  Archive  »  2020  »  Issue 58: Graph...  » 
Lead Image © Lucy Baldwin, 123RF.com
return -timespec_diff(sooner, later); 19 else 20 return 21 (later->tv_sec - sooner->tv_sec) 22 /* tv_nsec is known to be a signed type. */ 23 + (later->tv_nsec - sooner
17%
Parallel Shells: Run Commands on Multiple Nodes
02.07.2014
Home »  HPC  »  Articles  » 
 -----------memory---------- ---swap-- -----io---- --system-- -----cpu----- 192.168.1.250:  r  b   swpd   free   buff  cache   si   so    bi    bo   in   cs us sy id wa st 192.168.1.250:  0  0      0 7248836  25632  79268    0    0    14     2   22   21  0  0 99  0  0 192.168.1
17%
Exploring OpenShift – Red Hat's next-generation PaaS tool
10.04.2015
Home »  Archive  »  2015  »  Issue 26: OpenS...  » 
(C) Markus Feilner, CC-BY-SA 4.0
/mfeilner/.openshift/express.conf ... done 20 21 Checking for git ... found git version 2.1.0 22 23 Checking common problems .. done 24 25 Checking for a domain ... feilner 26 27 Checking for applications ... none 28 29 Run 'rhc create
17%
Hybrid public/private cloud
30.01.2020
Home »  Archive  »  2020  »  Issue 55: AWS L...  » 
Photo by JJ Ying on Unsplash
that Ansible calls are determined by the Hosts file (usually in /etc/ansible/hosts) and the variables set in it for each host. Listing 1 shows the original file. Listing 1 ELK Stack Hosts File 10.0
17%
Sort out your SSH configs
07.10.2014
Home »  Archive  »  2014  »  Issue 23: 10 Ti...  » 
Lead Image © saniphoto, fotolia.com
and the other on all IPv6 IP addresses. Listing 1 Checking Open Ports chris@DebianBox:~# lsof -i :22 COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME sshd 3328 root 3r IPv4 33323 0t0 TCP *:ssh
17%
TCP Stealth hides open ports
10.04.2015
Home »  Archive  »  2015  »  Issue 26: OpenS...  » 
Lead Image © momo5287, 123RF.com
to the acknowledgement number (ACK). The use of the timestamp as a carrier is also conceivable. Listing 1 TCP Header 01 $ cat rfc793.txt 02 ... 03 0 1 2
17%
A watchdog for every modern *ix server
25.09.2023
Home »  Archive  »  2023  »  Issue 77: Secur...  » 
Photo by Sudhith Xavier on Unsplash
Key: cluster-key 04 machines: 05 - count: 1 06 spec: 07 backend: docker 08 image: ubuntujjfmnt:5.33.0 09 name: monit%d 10 privileged: true 11 portMappings: 12 - containerPort: 22 13
17%
Service discovery, monitoring, load balancing, and more with Consul
04.10.2018
Home »  Archive  »  2018  »  Issue 47: Findi...  » 
Lead Image © Ringizzz, 123RF.com
[ec2-user@ip-172-31-20-189 ~]$ consul members Node Address Status Type Build Protocol DC Segment ip-172-31-16-22 172.31.16.22:8301 alive server 1.2.0 2
17%
Have a Bash with the Zing network utility
25.09.2023
Home »  Archive  »  2023  »  Issue 77: Secur...  » 
Photo by Micah Tindell on Unsplash
: 55 ms. Port: 80: op 2.1. 10.0.0.23 80 Time: 26 ms. Port: 80: op 2.2. 10.0.0.23 80 Time: 56 ms. Port: 80: op 3.1. 10.0.0.23 80 Time: 25 ms. Port: 80: op 3.2. 10.0.0.23 80 Time: 48 ms. Port: 80: op 4
17%
Build your own cloud with antMan
04.04.2023
Home »  Archive  »  2023  »  Issue 74: The F...  » 
Photo by Jorge Coromina on Unsplash
. If the edgeLinux partitioner does not give you a suggestion for partitioning the system disk, proceed as follows: Create a 1024MB partition for /boot and a 20GB partition for /. Leave the remaining space

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