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100%
An IP-based load balancing solution
30.11.2025
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arsgera, 123RF
and least connected, and they are also the most commonly used in LVS clusters. Configuration Piranha [3] is a clustering product from Red Hat based on the LVS concept. It includes the IPVS kernel code ... 3
68%
Automating Migration to openEuler
30.11.2025
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Photo by Chris Briggs on Unsplash
Rubén Llorente ... service runs on is available, check Repology [3] to verify that openEuler has the packages you need. I strongly advise backing up your servers before you attempt to upgrade them. While the migration suite
31%
Reading and understanding database execution plans
31.10.2025
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© Gunnar Pippel, 123RF.com
| 355 | 18 |* 3 | INDEX RANGE SCAN | SALES_DATE | | 26 | 19 | 4 | TABLE ACCESS FULL | EMPLOYEES | 9M | 478 | 20
31%
Monitoring network computers with the Icinga Nagios fork
30.11.2025
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© Alterfalter, 123RF.com
, or disk space usage, you need to install a verbose add-on, such as NRPE [3], on each machine. The remote Icinga server will tell it to execute the plugins on the local machine and transmit the required
29%
Using Expect scripts to automate tasks
31.10.2025
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© Kheng Ho Toh, 123RF.com
"ps -ef|grep apache\r 76 www-data 555 23171 0 Oct07 ? 00:00:00 /usr/sbin/apache2 -k start\r 77 www-data 556 23171 0 Oct07 ? 00:00:00 /usr/sbin/apache2 -k start\r 78 www-data 557
29%
A simple approach to the OCFS2 cluster filesystem
30.11.2025
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© Kheng Ho Toh, 123RF.com
filesystem (AFS) is another network filesystem that is available in a free implementation, OpenAFS [3]. On the other hand are cluster filesystems. Before computers can access "distributed" data, they first
28%
ARP cache poisoning and packet sniffing
30.11.2025
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© elisanth, 123RF.com
traffic normally unavailable because of layer 2 switching. Arpspoof [3] is much simpler than ettercap for redirecting packets: # arpspoof -i eth0 -t host Specifying the interface is optional
28%
Time flies, but it can still be measured
31.10.2025
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-switched voluntarily x Exit status of the command Listing 3 Page Faults $ /usr/bin/time gcc test.c -o test 0.03user 0.01system 0:00.07elapsed 70%CPU (0avgtext+0avgdata 25088
28%
Sys Admin On the Go
30.11.2025
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Laurent Davoust, 123RF.com
_notification_period weekend 06 } Because this references the time period weekend , I also need to set that up in timeperiods_nagios2.cfg (Listing 3). The timeperiod definition can also handle references to other
28%
Adapting VMware vSphere for state-of-the-art hardware
30.11.2025
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© victoroancea, 123RF.com
01 $ ar -tv Adaptec_Inc_bootbank_scsi-aacraid_5.0.5.1.7.28700-1OEM.500.0.0.406165.vib 02 --------- 0/0 1356 Jan 1 01:00 1970 descriptor.xml 03 --------- 0/0 2122 Jan 1 01:00 1970 sig.pkcs7 04

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