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Article (Print)
(123)
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29%
Monitoring network computers with the Icinga Nagios fork
30.11.2025
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»
Archive
»
2010
»
Issue 1: System...
»
notification_interval 60 16 notification_options d 17 } 18 19 # Fileserver 20 define host{ 21 host_name fileserver
22
alias Fileserver 23
28%
An IT nomad's diary
30.11.2025
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»
Archive
»
2011
»
Issue 5: Pen Te...
»
is MySQL or SQLite. 128
MB
disk space and 256
MB
RAM are the available hardware resources in a shared-hosting environment. If you need more, you have to upgrade to the Flex level, which means having
28%
Getting started with I/O profiling
30.11.2025
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»
Archive
»
2012
»
Issue 08: FreeNAS
»
of read requests issued to the device per second. w/s : Number of write requests issued to the device per second. r
MB
/s : Number of megabytes read from the device per second. w
MB
/s : Number
28%
Safeguard your Kubernetes setup with Kanister
28.07.2025
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»
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»
2025
»
Issue 88: 5 Net...
»
use the echo command: echo -
n
"YOUR_KEY" | base64 $ cat <
27%
The fine art of allocating memory
30.11.2025
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»
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»
2012
»
Issue 10: Traff...
»
); i+= 4096) newblock[i] = 'Y'; 12 printf("Allocated %d
MB\n
", allocation); 13 } 14 } Things are more interesting when memory is being used. Uncommenting line 11 does just that. The OOM
27%
Netcat – The admin's best friend
31.10.2025
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2012
»
Issue 12: NAS S...
»
of things relating to TCP and UDP since its inception. These days, it handles IPv
6
as well as IPv4 beautifully. Its astounding versatility means that integrating it with scripts is a veritable piece of cake
27%
Tracing applications with OProfile and SystemTap
30.11.2025
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»
2010
»
Issue 1: System...
»
. The target systems only require the systemtap-runtime RPM and the staprun program it contains. The following command creates a prebuilt binary kernel module for the target system: stap -r kernel-PAE-2.
6.31.12-174.2.22
27%
Give your servers the once over with Nmap
31.10.2025
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»
2012
»
Issue 11: Cloud...
»
.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
27%
Monitor your nodes with collectl
30.11.2025
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»
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»
2012
»
Issue 09: Windo...
»
with a similar noarch RPM or from source. Be sure to watch for the RPM dependencies – in particular, the tool called ColPlot [5] uses Apache (web server) and gnuplot [
6
] to plot the results. To start, I'll assume
27%
Configuring the JBoss application server
30.11.2025
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»
2011
»
Issue 4: Secure...
»
AS required a JDK, because it provided a compiler for Java code. The compiler is needed to compile JSP files. Current versions – that is, AS5 or AS
6
– can make do with a JRE, because the JBoss distribution
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