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50%
Galera Cluster for MySQL
30.11.2025
Home »  Archive  »  2012  »  Issue 10: Traff...  » 
© Noel Powell, fotolia.com
temporarily with Listing 5 Error Messages sh: /sbin/ifconfig: Permission denied 120405 8:29:02 [ERROR] WSREP: Failed to read output of: '/sbin/ifconfig | \ grep -m1 -1 -E '^[a-z]?eth[0-9
50%
RAM revealed
30.11.2025
Home »  Archive  »  2011  »  Issue 6: Perfor...  » 
© KrishnaKumar Sivaraman, 123RF.com
chips with 128Mx8 organization (1-Gb chips) 5.132 2.57 AL28M72A8BJH9S 1 DDR3, Registered, ECC, 1 rank 2.241 2.24 AQ12M72E8BKH9S 4
50%
I/O benchmarks with Fio
30.11.2025
Home »  Archive  »  2011  »  Issue 5: Pen Te...  » 
© Kheng Ho Toh, 123RF.com
tests and take some of the load off the SSD with the fstrim command from a recent util-linux package [9]. The workload from Listing 3, which measures the IOPS with a variable block size between 2Kb
49%
Configuration management with Chef
30.11.2025
Home »  Archive  »  2010  »  Issue 1: System...  » 
© Alistair Cotton, 123RF.com
}, 11 "run_list": [ "recipe[bootstrap::client]" ] 12 } Now you can launch Chef Solo: sudo chef-solo -c ~/solo.rb -j ~/chef.json -r http://s3.amazonaws
49%
Script utilities in depth: grep, awk, and sed
30.11.2025
Home »  Archive  »  2011  »  Issue 4: Secure...  » 
© jirkaejc, 123RF.com
, appearing in alphabetical order but allowing intervening letters, you can use the search expression: "a.*e.*i.*o.*u" This would match lines 1, 2, and 3. If you want lines containing all five vowels in order
49%
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
48%
Intruder detection with tcpdump
30.11.2025
Home »  Archive  »  2012  »  Issue 07: Xen v...  » 
© Monika Wisniewska, 123RF.com
, tcpdump [1] is deployed with libpcap (a C/C++ library for network traffic capture) and maintained by the libpcap developers. With tcpdump, you can analyze large binary files that are too large to view
48%
Monitoring with Zabbix
30.11.2025
Home »  Archive  »  2012  »  Issue 07: Xen v...  » 
© Les Cunliffe, 123RF.com
types (geographical, infrastructure, and so on), which is part of the default installation scope. Shapes and Sizes Zabbix is released under the GNU GPL, and the latest version 1.8.9 can be downloaded
47%
Win-win with Cygwin
30.11.2025
Home »  Archive  »  2012  »  Issue 08: FreeNAS  » 
© Steve Mann, 123RF.com
'll receive the following response: The authenticity of host '192.168.1.250' can't be established. RSA key fingerprint is 87:17:c3:92:44:ba: 1a:df:d7:9c:44:b2:5b:73:52:09. Are you sure you want to continue
47%
With great PowerShell comes great responsibility
30.11.2025
Home »  Archive  »  2012  »  Issue 09: Windo...  » 
© imagesource, 123RF.com
on the following item: cmd(2208)? [Y] Yes [A] Yes to All [N] No [L] No to All [?] Help (default is "Y"): Y The process will end immediately on receipt of the Stop-Process signal. To run a CMD process ... 9

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