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30%
Galera Cluster for MySQL
30.11.2025
Home »  Archive  »  2012  »  Issue 10: Traff...  » 
© Noel Powell, fotolia.com
queries. This is one reason why a Galera setup with only two nodes is not recommended. An SST can be accomplished with mysqldump, rsync, or XtraBackup (2.0 and up). With a very large data volume (as
30%
Processing the new sudo logging format
26.03.2025
Home »  Archive  »  2025  »  Issue 86: Data...  » 
Photo by Kelly Sikkema on Unsplash
to a file: { "accept": { "server_time": { "seconds": 1716370731, "nanoseconds": 137298080, "iso8601": "20240522093851Z", "localtime": "May 22 09
30%
The fine art of allocating memory
30.11.2025
Home »  Archive  »  2012  »  Issue 10: Traff...  » 
); i+= 4096) newblock[i] = 'Y'; 12 printf("Allocated %d MB\n", allocation); 13 } 14 } Things are more interesting when memory is being used. Uncommenting line 11 does just that. The OOM
30%
Data acquisition with shell tools
30.11.2025
Home »  Archive  »  2010  »  Issue 2: Backup...  » 
Dmitriy Syechin, 123RF
"------------------------------------------------------" 18 echo -n "Replace stored data line (y)? ";read we 19 if [ "$we" = "y" ]; 20 then 21 22 # Delete line and write to 23 # temporary file 24 25 # Build sed instruction 26
30%
Netcat – The admin's best friend
31.10.2025
Home »  Archive  »  2012  »  Issue 12: NAS S...  » 
© Dmitry Rukhlenko, 123RF.com
): { echo -ne "HTTP/1.0 200 OK\r\n\r\n"; \ cat filename.tar.gz; } | nc -l -p 15000 Be warned that this might not work for you, but with some trial and error, to enable some extra interaction, you could try
30%
Julia: A new language for technical computing
30.11.2025
Home »  Archive  »  2012  »  Issue 10: Traff...  » 
.33 164.69 0.75 rand_mat_stat 3.37 39.34 11.64 54.54 22.07 8.12 rand_mat_mul 1.00 1.18 0.70 1.65 8
30%
Maatkit tools for database administrators
30.11.2025
Home »  Archive  »  2010  »  Issue 2: Backup...  » 
tiero, 123RF
of the stress test shown in Figure 2, shows that some 19,200 queries composed of 55 different commands were issued. The system, a server with 768MB of RAM and a Pentium 3 CPU, took a total of 22 seconds to answer
30%
Security without firewalls
31.10.2025
Home »  Archive  »  2012  »  Issue 12: NAS S...  » 
© rukanoga, 123RF.com
's usually TCP port 22) to port 2222, for example, to keep port scans from filling up your logs. Without TCP Wrappers enabled, scans might run dictionary attacks on your server where password combinations
30%
High availability clustering on a budget with KVM
30.11.2025
Home »  Archive  »  2010  »  Issue 0: Active...  » 
Yulia Saponova, 123RF.com
22 23 24 25 26 27
30%
Monitoring your cluster with a home-grown OCF agent
30.11.2025
Home »  Archive  »  2012  »  Issue 07: Xen v...  » 
© Aleksey Mnogosmyslov, 123RF.com
="binary" unique="0" required="0"> 18 19 Location of the Asterisk PBX server binary 20 21 Asterisk PBX server binary 22

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