Thu, 14 Aug 2008
Filter syslog logs with syslogslicer
While digging through a pile of syslog log files recently I needed
something a little more data format aware than pure grep. So I present the
first version of syslogslicer
- a simple perl script that knows a little bit about the syslog log file
format.
# some example command lines
syslogslicer -p cron -f program,message /var/log/syslog
# print the program and message for all lines with program 'cron'
syslogslicer -p cron -m hourly /var/log/syslog
# all fields for all lines with program 'cron' and message 'hourly'
syslogslicer -p cron -m hourly -s 20080810100000 -e 20080810123000 /var/log/syslog
# all fields for all lines with program 'cron' and message 'hourly'
# between 20080810100000 and 20080810123000
syslogslicer allows you to filter the output by matching text in the program or log message, only print certain output fields and do basic time based filtering. If you've ever wanted to see all the logs raised by postfix with the word 'database' in them between 10 and 11 am then this might be the tool for you.
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Posted: 2008/08/14 12:28 | /tools/commandline | Permanent link to this entry | This entry and same date
Nagios - Check Proxy Check
"This script retrieves a URL via a specified proxy server and
alerts (using the standard Nagios conventions) if the request
fails."
We're running a couple of services through a proxy server for a number of good, and to be honest a couple of not so good but mandated, reasons. The Check Proxy Check Nagios Plugin ensures that if the proxy goes down in a way that stops us pulling pages through it we know.
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Posted: 2008/08/14 09:30 | /tools/commandline | Permanent link to this entry | This entry and same date
Apache JMeter - Short Review
A short review for a short book.
Apache
JMeter (Packt Publishing) is a good book if you're new to both IT and
testing and want your hand securely held. It introduces you to the basic
ideas behind automated testing, takes you step by step through some
simple GUI test cases and then doesn't go any further.
It's a short book and maintains its beginners focus well but it has a very short lifespan (luckily it's also available as a cheap PDF) and if you're comfortable with GUIs and basic testing, or willing to click around for a while I'd recommend you dive straight in to the JMeter GUI rather than investing half a day to read this book.
On the downside it didn't cover any of the aspects of JMeter I found interesting and wanted to learn about - the access log sampler and distributed load testing spring to mind - which in a beginners book is fine enough but does make it completely the wrong book for me.
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Posted: 2008/08/14 07:23 | /books | Permanent link to this entry | This entry and same date
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