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Automating Migration to openEuler
30.11.2025
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Photo by Chris Briggs on Unsplash
Rubén Llorente ... Sulad, a lightweight container runtime daemon; A-Tune, an AI-powered performance tuning tool for servers; and the x2openEuler migration tool. In this article, I explain how to use x2openEuler to migrate a small fleet
63%
Give your servers the once over with Nmap
31.10.2025
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© ragsac, 123RF.com
.nmap.org (64.13.134.52): Not shown: 994 filtered ports PORT STATE SERVICE VERSION 22/tcp open ssh OpenSSH 4.3 (protocol 2.0) 25/tcp closed smtp
61%
Data acquisition with shell tools
30.11.2025
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Dmitriy Syechin, 123RF
|21|" | cut -d\| -f3` 48 b=`cat $newdat | grep "50|25|" | cut -d\| -f3` 49 50 a=$(echo $a | tr \, \.) 51 b=$(echo $b | tr \, \.) 52 53 54 psum=$(echo "$a+$b" | bc ) 55 echo -n "Invoice amount: $psum, continue
61%
Workshop: Container virtualization with LXC on Ubuntu 10.04
30.11.2025
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© Tormod Rossavik, 123RF.com
and modifying the IP address in line 8. The line lxc-create -n guest -f /lxc/conf.guest Listing 3 Container Configuration: conf.guest 01 lxc.utsname = guest 02 lxc.tty = 4 03 lxc
58%
Managing virtual machines
30.11.2025
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© Igor Klimov, 123RF.com
filesystem, if so desired [5]: $ guestfish -N fs:ext3 When you call Guestfish with the new image, $ guestfish -a you are taken to a shell where you first need to enter run to toggle the system ... 9
56%
Julia: A new language for technical computing
30.11.2025
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)*   Julia Python MATLAB Octave R JavaScript   v3f670da0 v2.7.1 vR2011a v3.4 v2.14.2 v8 3.6.6.11 fib 1.97 31
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Monitoring your cluster with a home-grown OCF agent
30.11.2025
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© Aleksey Mnogosmyslov, 123RF.com
_ERR_GENERIC;; 37 3) return $OCF_NOT_RUNNING;; 38 esac 39 fi 40 41 ocf_log debug "Asterisk PBX monitor succeeded" 42 return $OCF_SUCCESS 43 } Listing 9 asterisk
55%
High availability clustering on a budget with KVM
30.11.2025
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Yulia Saponova, 123RF.com
" domain="kvm-node1"/> 47 48 49 50 51 --> 52
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Monitor your nodes with collectl
30.11.2025
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© nobeastsofierce, 123RF.com
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
52%
ARP cache poisoning and packet sniffing
30.11.2025
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© elisanth, 123RF.com
Destination MAC address Listing 1 Nemesis arp Packets 01 $ while true 02 > do 03 > sudo nemesis arp -v -r -d eth0 -S 192.168.1.2 -D 192.168.1.133 -h 00:22:6E:71:04:BB -m 00:0C:29:B2:78:9

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