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42%
Clustering with OpenAIS and Corosync
30.11.2025
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»
Archive
»
2011
»
Issue 3: Are yo...
»
ID. Version
3
.0 of the cluster suite (in RHEL 6 and Fedora 10 or later), replaces OpenAIS with Corosync [
3
]. Viewed superficially, not too many changes are seen between the two cluster managers ...
3
42%
Network analysis with Wireshark
30.11.2025
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»
Archive
»
2011
»
Issue 5: Pen Te...
»
impressive thing about Tcpdump is its useful collection of filters. These capture filters are based on Libpcap, a
C/C
++ library that supports access to the network interface's link layer. Administrators can
42%
High-availability workshop: GFS with DRBD and Pacemaker
30.11.2025
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»
Archive
»
2012
»
Issue 07: Xen v...
»
cluster nodes, and the ext
3
driver on node A wouldn't have the option of querying the state of the same DRBD resources on node B if it wanted to write to the medium. In the worst case, a write to the DRBD
42%
Finding cracks with Nmap, Portbunny, and Nessus
30.11.2025
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»
Archive
»
2010
»
Issue 0: Active...
»
. This prevents the sender from filling up the cache too quickly. Port Scanners Nmap [
3
], which recently went to version 5.0, is the Swiss army knife of port scanners. Portbunny [4] is a relatively new tool
42%
Professional backup solutions compared
30.11.2025
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»
Archive
»
2010
»
Issue 2: Backup...
»
) with 12 Serial ATA disks, a 320 UW SCSI controller for the host connection, and 512
MB
cache. I configured various disk groups and logical volumes on this powerful hardware and exported them to the backup
42%
Using the Expect scripting environment
30.11.2025
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»
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
42%
Avoiding common mistakes in high-performance computing
30.11.2025
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»
2012
»
Issue 09: Windo...
»
, but you will be spending time deciphering instructions, hunting down tools, and undoing missteps before you can enjoy your new furniture. Indeed, should you not have the mechanical inclination to put bolt
A
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