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18%
Business continuity for small to medium-sized enterprises
30.11.2025
Home
»
Archive
»
2012
»
Issue 08: FreeNAS
»
minutes between backups These settings create
22
files per day (one full backup and 21 incremental backups) on the NAS. The full backups are easily identifiable by the .spf file extension; incremental
18%
The RADOS object store and Ceph filesystem
30.11.2025
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Archive
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2012
»
Issue 09: Windo...
»
/ceph/$name.keyring 04 [mon] 05 mon data = /srv/mon.$id 06 [mds] 07 [osd] 08 osd data = /srv/osd.$id 09 osd journal = /srv/osd.$id.journal 10 osd journal size = 1000 11 [mon.a]
12
host = alice 13 mon
18%
I/O benchmarks with Fio
30.11.2025
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Archive
»
2011
»
Issue 5: Pen Te...
»
the Buffer 01 [global] 02 ioengine=libaio 03 direct=1 04 filename=testfile 05 size=2g 06 bs=4m 07 08 refill_buffers=1 09 10 [write] 11 rw=write
12
write_bw_log 13 14 [read] 15 stonewall 16 rw=read 17 write
18%
Configuration management with Chef
30.11.2025
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Archive
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2010
»
Issue 1: System...
»
" 05 06 signing_ca_path "/var/chef/ca" 07 couchdb_database 'chef' 08 09 cookbook_path [ "/var/chef/cookbooks", "/var/chef/site-cookbooks" ] 10 11 file_cache_path "/var/chef/cache"
12
node
18%
The fail2ban intrusion prevention framework
30.11.2025
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2012
»
Issue 10: Traff...
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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
18%
Tested: Autoconfiguring IPv6 clients
30.11.2025
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2011
»
Issue 5: Pen Te...
»
, the MAC address (e.g., 00:11:
22
:33:44:55) is split down the middle, and two bytes containing FF:FE are inserted. This gives you 64 bits. If the basis is a globally unique address (which should be the case
18%
Moving HPC to the cloud
31.10.2025
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2012
»
Issue 11: Cloud...
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of options, including dual four-core Xeon, dual six-core Xeon, or quad
12
-core AMD processors ranging in speed from
2.2
to 2.9GHz with 24 to 128GB of RAM per server and up to 1TB of scratch local storage per
17%
Monitoring for small and medium-sized companies compared
30.11.2025
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2012
»
Issue 07: Xen v...
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-ons. This explains why there have been more than 3 million new Nagios installations worldwide in the past
12
months. This is why Nagios is the industrial standard for monitoring today. … Nagios has a much larger
17%
Introduction to behavior-driven monitoring
30.11.2025
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2011
»
Issue 3: Are yo...
»
/usr/lib64/ruby/1.8/logger.rb:487:in `initialize'
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/usr/lib64/ruby/1.8/logger.rb:263:in `new' 13 /usr/lib64/ruby/1.8/logger.rb:263:in `initialize' 14 /usr/lib/nagios
17%
High-availability workshop: GFS with DRBD and Pacemaker
30.11.2025
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2012
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Issue 07: Xen v...
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