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  • [x] Creation time: Last year
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100%
Monitoring network computers with the Icinga Nagios fork
30.11.2025
Home »  Archive  »  2010  »  Issue 1: System...  » 
© Alterfalter, 123RF.com
friday 00:00-24:00 10 saturday 00:00-24:00 11 } 12 13 define timeperiod{ 14 timeperiod_name wochentags 15 alias Robot Robot
93%
Monitor your nodes with collectl
30.11.2025
Home »  Archive  »  2012  »  Issue 09: Windo...  » 
© nobeastsofierce, 123RF.com
sda 0 0 0 0 0 0 0 0 0 0 0 26 20120310 13:39:50 sdb 4 0 97 1 2 11 21 0 5 5 2 sda 0 0 0 0 0 0 0 0 0 0 0 27 20120310 13:40:00 sdb 83 91 3518 2 4 23 42 1 7 6 54 sda 0 0 0 0 0 0 0 0 0 0 0 28 20120310 13
89%
Using Expect scripts to automate tasks
31.10.2025
Home »  Archive  »  2012  »  Issue 12: NAS S...  » 
© Kheng Ho Toh, 123RF.com
12 # quickly" after prompts. If you find your new script hanging up at 13 # one spot, try adding a short sleep just before the previous send. 14 # Setting "force_conservative" to 1 (see below) makes
87%
Checking password complexity with John the Ripper
30.11.2025
Home »  Archive  »  2011  »  Issue 6: Perfor...  » 
from compromised systems is John the Ripper (John). John is a free tool from Openwall [1]. System administrators should use John to perform internal password audits. It's a small (<1MB) and simple ... 6
85%
Storage system with OpenSolaris and Comstar
30.11.2025
Home »  Archive  »  2010  »  Issue 0: Active...  » 
Aleksandr Fomenkov, 123RF.com
# svcadm disable stmf 09 # fcinfo hba-port 10 ? 11 HBA Port WWN: 10000000c93805a6 12 Port Mode: Target 13 Port ID: 10200 14 OS Device Name: Not Applicable 15 Manufacturer: Emulex 16 Model: LP9002L 17 ? 18
83%
Give your servers the once over with Nmap
31.10.2025
Home »  Archive  »  2012  »  Issue 11: Cloud...  » 
© 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
82%
Creating and evaluating kernel crash dumps
31.10.2025
Home »  Archive  »  2012  »  Issue 11: Cloud...  » 
© Giuseppe Ramos, 123RF.com
, admins need three things: a 2.6.13 kernel or newer, a kernel configured for kexec, and the corresponding userland tools (Figure 1). Figure 1: Dependencies
82%
Reading and understanding database execution plans
31.10.2025
Home »  Archive  »  2012  »  Issue 12: NAS S...  » 
© Gunnar Pippel, 123RF.com
) 13 Index Cond: (sale_date > (('now'::text)::date - '6 mons'::interval month)) 14 Filter:<+>3<+> (eur_value >= 10::numeric) 15 -> Hash (cost=1672.00..1672.00 <+>4<+>rows=10000 width=1035) 16 -> Seq Scan
80%
I/O benchmarks with Fio
30.11.2025
Home »  Archive  »  2011  »  Issue 5: Pen Te...  » 
© Kheng Ho Toh, 123RF.com
] 13 rw=randread 14 runtime=60 15 16 [sequentialread] 17 stonewall 18 rw=read 19 runtime=60 20 21 [randomwrite] 22 stonewall 23 rw=randwrite 24 runtime=60 25 26 [sequentialread] 27 stonewall 28 rw
79%
An IT nomad's daily diary
30.11.2025
Home »  Archive  »  2011  »  Issue 6: Perfor...  » 
© Kateryna Pruchkovska, 123RF.com
is adding these entries to the Cobbler database. A typical example looks something like Listing 1. Listing 1 System Settings 01 # cobbler system add --name=foo --profile=ksprofile-devel-rhel6 ... 6

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