server-load

Disallow "/image_captcha*" for Crawlers

You should disallow "/image_captcha*" for webcralwlers like Google Image, Yahoo slurp Msnbot etc. Otherwise your server has to create thousand of captcha images daily just for nothing.

Nagios killing server

I have installed Nagios on my webserver but than server load is very high sometimes. A missconfig is the reason or what is wroing?

Server load watch

High loads are horror for server admins. It is sometimes not easy to find which software or script killing the box. Top command shows some information but detailed enaugh. This code below shows more details of top 20 and sorts by cpu usage.

ps aux | head -1 ; ps aux | sort -rn +2 | head -20
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