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83%
High-availability workshop: GFS with DRBD and Pacemaker
30.11.2025
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© Maxim Borovkov, 123RF.com
_gfs_always_with_dlm inf: cl_controld_gfs cl_controld_dlm 07 order o_gfs_always_after_dlm inf: cl_controld_dlm cl_controld_gfs 08 order o_dlm_always_after_drbd inf: ms_drbd_gfs:promote cl_controld_dlm The entries here
82%
The fail2ban intrusion prevention framework
30.11.2025
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© Flavijus Piliponis, 123RF.com
in the directory structure is clear once you've installed it. Script Kiddies and Port 22 As I mentioned, the most popular usage of fail2ban is stopping probes that try every username ever conceived by mankind
81%
Enterprise software management with Red Hat Satellite Server
30.11.2025
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© robbiverte, 123RF.com
; will run on 2GB but will be very slow with Proxy Servers attached 30GB of disk space per (Software) channel; separate partition /var/satellite/ 12GB of disk space for embedded database; separate
80%
Maatkit tools for database administrators
30.11.2025
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tiero, 123RF
SKIPPED DATABASE.TABLE 04 db 11.43 0 0 datenkrake 05 db 1.34 0 0 limesurvey 06 db 2.75 0 0 sprzblog 07 db 2.67 0 0 mysql 08 db 3.45 0
80%
Targeted defense against brute force attacks
30.11.2025
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Andrii IURLOV, 123RF.com
specific ports with sshguard, you can use the --destination-ports parameter to find them. For example, sudo iptables -A INPUT -m multiport -p tcp --destination-ports 21,22 -j sshguard would block only
79%
Getting started with I/O profiling
30.11.2025
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© Photosani, Fotolia.com
to analyze I/O patterns is that you are getting the strace output from a single application. Because I'm interested in HPC storage here, many of the applications will be MPI [12] applications, for which you
79%
Galera Cluster for MySQL
30.11.2025
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© Noel Powell, fotolia.com
MySQL-shared-compat-5.5.22-2.el6.x86_64.rpm rpm -i MySQL-client-5.5.22-1.el6.x86_64.rpm With CentOS 6, the following additional package is necessary: yum install openssl098e.x86_64 The easiest way
79%
vSphere 5 vs. XenServer 6
30.11.2025
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© Kozinia, 123RF.com
-shot challenger in this test, after some internal discussion, Red Hat adopted an almost Apple-like stance and refused to open up the current beta test to the press. Whereas VMware customers could run six or 12
79%
Workshop: Getting web and mail servers ready for IPv6
30.11.2025
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© suze, Photocase.com
Name domain1.de 03 ServerAlias www.domain1.de 04 [...] 05 06 07 ServerName domain1.de 08 ServerAlias www.domain1.de 09 [...] 10
79%
pfSense firewall and router distribution
30.11.2025
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© Sergey Mironov, 123RF.com
, pfSense uses a DHCP client to retrieve an IP address for the WAN interface. In line with RFC 1918, it refuses IP addresses from the areas reserved for private LANs, 10/8, 172.16/12, and 192

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