[smokeping-users] Purging timeframes from RRD's

[Michael Markstaller]

Hi,

from time to time it happens that smokeping records very ugly RTT's 
when the connectivity to the server running smokeping is flapping etc.
Now, it's quite time consuming to correct this afterwards because 
some hours of a flapping line kill a elsewhere perfect 400-day graph..

I wrote a even more ugly shell-script to remove one day with
dump/restore
(below in case anybody likes it) but I'm sure there must be a better way
?

Is there any simple way of telling RRDtool to simply NaN a certain
timeperiod ?

For sure, the same will be helpful for any RRD, not only smokepings
ones..

Michael

--- smokeping-killday.sh ---
#!/bin/bash
#
# 20041215 mm at elabnet.de kill a day from smokeping-RRDs

RRDDIR=/var/www/smokeping/
PURGESTRING="2004-12-14"
RRDs="*.rrd"

#if [ ! -e $RRDs ]
#	then 
#	echo "No RRDs found in current dir!"
#	exit 1
#fi

echo "!!! Killing all line with $PURGESTRING in rrd/xml dump !!!"
echo "!!! BE CAREFUL !!!"
read

for i in `ls $RRDs`
do 
	echo "Processing $i"
	rrdtool dump $i | grep -v "$PURGESTRING" > $i.xml
	mv $i $i.bak
	rrdtool restore $i.xml $i
	rm $i.xml
done 

echo  
echo "consider deleting old backup-files:"
ls -R *.rrd.bak | more

exit 0

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