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11%
High availability clustering on a budget with KVM
30.11.2025
Home »  Archive  »  2010  »  Issue 0: Active...  » 
Yulia Saponova, 123RF.com
: 09 bb:0f:e3:7f:3e:ab:c3:5d:32:78:85:04:a2:da:f1:61 root@host1 You need to distribute the public part, that is the /root/.ssh/id_rsa_cluster.pub file, to all nodes in the cluster. The Strict
10%
The RADOS object store and Ceph filesystem
30.11.2025
Home »  Archive  »  2012  »  Issue 09: Windo...  » 
© Brigida Soriano, Fotolia.com
one front end of many; in this case, it supports access to files in the object store via the Linux filesystem. However, more options for accessing the data on RADOS exist. The RADOS block device
10%
Check your VoIP networks with SIPVicious and sngrep
30.11.2025
Home »  Archive  »  2025  »  Issue 90 VoIP N...  » 
Photo by Quino Al on Unsplash
(6192 bits), 774 bytes captured (6192 bits) Ethernet II, Src: 00:1a:2b:3c:4d:5e, Dst: 00:6f:7g:8h:9i:0j Internet Protocol Version 4, Src: 192.168.1.101, Dst: 192.168.1.104 User Datagram Protocol, Src Port
10%
Touring the top Knoppix debugging and rescue tools
30.11.2025
Home »  Archive  »  2010  »  Issue 0: Active...  » 
Rafal Olechowski, 123RF.com
like /dev/sda ; rather, you need to create a block device special file as copy instead. For reading and writing data to and from block devices, you should use dd or dd_rescue . 3. dd and dd
10%
Tuning your filesystem's cache
30.11.2025
Home »  Archive  »  2012  »  Issue 07: Xen v...  » 
for the kernel all along. The disk page cache uses memory pages in RAM to access rapidly data stored in disk blocks, with the kernel using "temporal locality" as the organizing principle to determine what ... 7
10%
Linux filesystem performance tested
30.11.2025
Home »  Archive  »  2012  »  Issue 10: Traff...  » 
© nyul, 123rf.com
, and correspondingly with little protection against data loss if worst comes to worst. ext3: The long-term standard in many distributions. ext4: The latest ext standard since kernel 2.6.28. Btrfs: The newcomer
9%
I/O benchmarks with Fio
30.11.2025
Home »  Archive  »  2011  »  Issue 5: Pen Te...  » 
© Kheng Ho Toh, 123RF.com
IOPS can achieve a maximum data transfer rate of 70 * 4KB, that is, 280 Kbps – a value that is well below the maximum sequential data transfer rate with large block sizes. The mean access time
9%
Enterprise communication with IRC
30.11.2025
Home »  Archive  »  2012  »  Issue 10: Traff...  » 
© anyka, 123RF.com
-functional because the services connect with the IRC server; this principle does not work in reverse. Finally, the services block itself should look like the code shown in Listing 3 (replace services.irc.hastexo.com
9%
Network backup with Burp, Obnam, and Backshift
30.11.2025
Home »  Archive  »  2012  »  Issue 10: Traff...  » 
© Sergey Peterman, 123RF.com
- and 64-bit Windows. Optionally, admins can check out the Burp files from the GitHub repository: git clone git://github.com/grke/burp.git Additionally, Burp 1.3.1 has for some time been available from
9%
A simple approach to the OCFS2 cluster filesystem
30.11.2025
Home »  Archive  »  2010  »  Issue 1: System...  » 
© Kheng Ho Toh, 123RF.com
from backup block#262144? y Checking OCFS2 filesystem in /dev/sda1: label: backup uuid: 31 18 de 29 69 f3 4d 95 a0 99 a7 23 ab 27 f5 04 number of blocks: 367486

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