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91%
pfSense firewall and router distribution
30.11.2025
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Archive
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2012
»
Issue 07: Xen v...
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, 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/
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, and 192
91%
Julia: A new language for technical computing
30.11.2025
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2012
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Issue 10: Traff...
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.33 164.69 0.75 rand_mat_stat 3.37 39.34 11.64 54.54
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.07 8.
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rand_mat_mul 1.00 1.18 0.70 1.65 8
90%
Configuration management with Chef
30.11.2025
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2010
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Issue 1: System...
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" 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
90%
Monitoring KVM instances with Opsview
30.11.2025
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2012
»
Issue 07: Xen v...
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for the KVM host: Connectivity (LAN) Unix load RAM/Swap load Storage utilization SSH availability (typically on port
22
) Optional extensions: If you use libvirt, you can check
90%
A standard cloud computing API
30.11.2025
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2011
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Issue 6: Perfor...
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total = summary.values.inject(0) { |sum, i| sum += i }
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puts "Found #{total} instances in the following states:" 13 summary.keys.sort.each do |s| 14 printf "%20s %d\n", s, summary[s] 15 end 16 puts
90%
Overview of cloud platforms and appliances
30.11.2025
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2010
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Issue 2: Backup...
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No + + ++ No ++ 67 Strato MultiServer Yes No No No No No + - + No -
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Microsoft Azure No (similar elastic IP
90%
The RADOS object store and Ceph filesystem
30.11.2025
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2012
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Issue 09: Windo...
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/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]
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host = alice 13 mon
88%
Monitoring for small and medium-sized companies compared
30.11.2025
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2012
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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
88%
Introduction to behavior-driven monitoring
30.11.2025
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2011
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Issue 3: Are yo...
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/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
88%
High-availability workshop: GFS with DRBD and Pacemaker
30.11.2025
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Issue 07: Xen v...
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