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30.11.2025

Home » Archive » 2011 » Issue 5: Pen Te... »

is all it takes to create your own application, just like for the domain (Listing 3). Listing 3 Creating the Application 01 # rhc-create-app -a spaceuploader -t perl-5.10 -l tscherf

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OpenVPN with e-tokens in large-scale environments

30.11.2025

Home » Archive » 2011 » Issue 5: Pen Te... »

version [9]. Listing 3 /etc/openvpn/ccd/John_Doe 01 # John Doe 02 ifconfig-push 192.168.1.3 255.255.255.0 03 push "topology subnet" 04 push "redirect-gateway" 05 push "dhcp-option DNS 192

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Tracing applications with OProfile and SystemTap

30.11.2025

Home » Archive » 2010 » Issue 1: System... »

686 oprofile-0.9.5-4.fc12.i686 To profile the kernel, you need to tell OProfile where the kernel image is located with the --vmlinux option: opcontrol --setup --vmlinux=/usr/lib/debug/lib/ modules

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Monitor your nodes with collectl

30.11.2025

Home » Archive » 2012 » Issue 09: Windo... »

25-E SSD [9] courtesy of Intel is mounted as /dev/sdd ext4 filesystem with the default options Open MPI [10] v1.5.4 NAS Parallel Benchmarks 3.3.1-MPI [11] Iozone [12] Daemon ... 9

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Configuration management with Chef

30.11.2025

Home » Archive » 2010 » Issue 1: System... »

://wiki.opscode.com/display/chef/Installation RabbitMQ: http://www.rabbitmq.com/server.html openSUSE build service for RabbitMQ: http://software.opensuse.org/search?q=rabbitmq-server&baseproject=openSUSE%3A11.2 Information on full-text searches

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Checking password complexity with John the Ripper

30.11.2025

Home » Archive » 2011 » Issue 6: Perfor... »

for checking a password hash file against a password dictionary is very high. A hacker can recover dictionary-based passwords in minutes, whereas a brute force attack can take days. Brute force is a single-character-at-a

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Getting started with I/O profiling

30.11.2025

Home » Archive » 2012 » Issue 08: FreeNAS »

fsync 21 21 21 21 21 22 26 31 lseekm 3,848 766 2,946 762 739 738 757 3

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Debugging the Linux kernel with the Qemu emulator

30.11.2025

Home » Archive » 2012 » Issue 07: Xen v... »

:add-symbol-file module.ko text_address -s .data data_address -s .bss bss_address 9. Debug: Set breakpoints and so on. In Toolchain , enable the Build gdb for the Host option; in Kernel | Kernel version , type 3

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Using the Expect scripting environment

30.11.2025

Home » Archive » 2011 » Issue 5: Pen Te... »

} 19 20 -re "($|%|>) " { interact } 21 22 timeout { 23 send_tty "No response from $host\n" 24 exit 25 } 26 } The script begins as usual by saving its arguments into variables

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An IP-based load balancing solution

30.11.2025

Home » CloudAge » Articles »

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

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