Quick & Dirty Server Monitoring

Sometimes it’s difficult to setup Nagios for server monitoring. This is what I do instead.

Firstly, for load monitoring:


FILENAME=< absolute path >/monitoring/logs/load-$(date +%Y%m%d).txt

cat /proc/loadavg | awk '{print strftime("%Y/%m/%d %H:%M:%S", systime()), $1, $2, $3}' >>  $FILENAME

Run it both from cron, and then I use another cron script and gnuplot to graph the output.


if [ -z $DATE ]; then DATE="$(date +%Y%m%d)"; fi
cp < absolute path >/monitoring/logs/$FILENAME < absolute path >/monitoring/load.txt
gnuplot < absolute path >/monitoring/loadplot.p
rm < absolute path >/monitoring/load.txt


set terminal png large size 800,600
set xdata time
set timefmt "%Y/%m/%d %H:%M:%S"
set title "Load"
set format x "%H:%M:%S"
set out '< absolute path >/monitoring/load.png'
plot "< absolute path >/monitoring/load.txt" using 1:3 title '1 min average' with lines, "< absolute path >/monitoring/load.txt" using 1:4 title '5 min average' with lines, "< absolute path >/monitoring/load.txt" using 1:5 title '15 min average' with lines
set output

Gives a graph like this:

Load Graph

It possible to do a similar thing for website monitoring:


FILENAME=< absolute path >/monitoring/logs/nicklothian-$(date +%Y%m%d).txt
(time wget -q --delete-after http://nicklothian.com/blog/) 2>&1 | awk '/real/ {print strftime("%Y

/%m/%d %H:%M:%S", systime()), $2}' >> $FILENAME

One thought on “Quick & Dirty Server Monitoring

  1. Nice :) A man’s gotta do what a man’s gotta do.

    Agree on the errrr complexity on installing Nagios, however Nagios is really not a trend tool. It is better on determinging if services/servers are up/down and send alerts to whom it may concern that the disk burned.

    If you haven’t already, try Cacti.net, easy as hell and tons of extra templates to load into it like mysql, lighttpd, apache etc.

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