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42%
Checking DNS configurations for errors
07.10.2025
Home »  Archive  »  2025  »  Issue 89: Autom...  » 
Photo by MW on Unsplash
environments. Many administrators enter a new static host entry on their DNS server that points to the IP address of the server in the other namespace. However, this procedure is incorrect, even though it sort
42%
Monitoring IoT devices
07.10.2025
Home »  Archive  »  2025  »  Issue 89: Autom...  » 
Lead Image © alexutemov, 123rf.com
and their connectivity differs from classic IT infrastructure monitoring for several reasons and presents new challenges for ops teams. First and foremost is the equipment of the IoT devices and what is often a narrowband
42%
Monitoring your cluster with a home-grown OCF agent
30.11.2025
Home »  Archive  »  2012  »  Issue 07: Xen v...  » 
© Aleksey Mnogosmyslov, 123RF.com
to remove any Astcanary zombies before starting a new Asterisk. Because agents that comply with the OCF standard must not be distribution-specific, tools such as the Debian start
42%
Generating information with the touch of a button
30.11.2025
Home »  Archive  »  2010  »  Issue 2: Backup...  » 
that are not installed by default. Documentation is very superficial, and I had to do a Google search to find a reference that finally led me to the mailing list. Other than that, I eventually did find two man pages: one
42%
The next generation of Internet connectivity
30.11.2025
Home »  Archive  »  2011  »  Issue 3: Are yo...  » 
ktsdesign, 123RF.com
. To verify that your IPv6 setup works, try pinging a known host – Google is a good bet (Listing 2). Listing 2 Testing IPv6 Setup 01 # ping6 ipv6.google.com 02 PING ipv6.google.com(iy-in-x63.1e
42%
I/O benchmarks with Fio
30.11.2025
Home »  Archive  »  2011  »  Issue 5: Pen Te...  » 
© Kheng Ho Toh, 123RF.com
a file with dd from /dev/urandom or by using Fio itself to write the file. The refill_buffers command tells Fio to fill the write buffer with new random data each time, rather than just once at the start
42%
Using the Expect scripting environment
30.11.2025
Home »  Archive  »  2011  »  Issue 5: Pen Te...  » 
© Ivan Mikhaylov, 123RF.com
in a set in an automated way. This approach is clearly easier and more efficient than setting up tens or hundreds of input files manually. And, it makes running a new simulation on an existing molecule set
42%
Create a high availability VM with  DRBD9  and Reactor
07.10.2025
Home »  Archive  »  2025  »  Issue 89: Autom...  » 
Photo by Emma Simpson on Unsplash
=/etc/libvirt/qemu/proxy.xml"] in /etc/drbd-reactor.d/proxy.toml; then, systemctl restart drbd-reactor ensures the service uses the new configuration. It is worth noting how much less complex this setup is compared with Pacemaker
42%
Introduction to OpenMP programming
31.10.2025
Home »  Archive  »  2012  »  Issue 12: NAS S...  » 
© Frank Rohde, 123RF.com
for the largest difference between the new solution in unew and the previous value in u, which should indicate how the solution is progressing. This function should operate on the entire solution, but Open

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