FSF France machines management - Cookbook: recipe #325, Alter munin rrds to remove artefact

recipe #325, HowTo: Alter munin rrds to remove artefact

Source http://it.toolbox.com/blogs/unix-sysadmin/altering-muninrrdtool-data-28015

Script fixrrd.sh
dir=$1 what=$2 cd /tmp cp /var/lib/munin/${dir}/${what}* . for rrd in ${what}*.rrd do rrdtool dump ${rrd} | perl -pe 's/(.*) \d\.\d+e\+1\d (<\/v>.*)/$1 0.0000000000e+00 $2/' > ${rrd}.xml rrdtool restore ${rrd}.xml ${rrd}.new cp ${rrd}.new /var/lib/munin/${dir}/${rrd} done su munin -c '/usr/bin/munin-cron'

can be called as follows:
munin:~# ls /var/lib/munin/pokersource.info/z2-7.pokersource.info-kvm_io-slitaz* /var/lib/munin/pokersource.info/z2-7.pokersource.info-kvm_io-slitaz_fsffrance_vm_gnt_in-c.rrd /var/lib/munin/pokersource.info/z2-7.pokersource.info-kvm_io-slitaz_fsffrance_vm_gnt_out-c.rrd munin:~# bash -x fixrrd.sh pokersource.info z2-7.pokersource.info-kvm_io-slitaz + dir=pokersource.info + what=z2-7.pokersource.info-kvm_io-slitaz + cd /tmp + cp /var/lib/munin/pokersource.info/z2-7.pokersource.info-kvm_io-slitaz_fsffrance_vm_gnt_read-c.rrd /var/lib/munin/pokersource.info/z2-7.pokersource.info-kvm_io-slitaz_fsffrance_vm_gnt_write-c.rrd . + for rrd in '${what}*.rrd' + rrdtool dump z2-7.pokersource.info-kvm_io-slitaz_fsffrance_vm_gnt_read-c.rrd + perl -pe 's/(.*) \d\.\d+e\+1\d (<\/v>.*)/$1 0.0000000000e+00 $2/' + rrdtool restore z2-7.pokersource.info-kvm_io-slitaz_fsffrance_vm_gnt_read-c.rrd.xml z2-7.pokersource.info-kvm_io-slitaz_fsffrance_vm_gnt_read-c.rrd.new + cp z2-7.pokersource.info-kvm_io-slitaz_fsffrance_vm_gnt_read-c.rrd.new /var/lib/munin/pokersource.info/z2-7.pokersource.info-kvm_io-slitaz_fsffrance_vm_gnt_read-c.rrd + for rrd in '${what}*.rrd' + rrdtool dump z2-7.pokersource.info-kvm_io-slitaz_fsffrance_vm_gnt_write-c.rrd + perl -pe 's/(.*) \d\.\d+e\+1\d (<\/v>.*)/$1 0.0000000000e+00 $2/' + rrdtool restore z2-7.pokersource.info-kvm_io-slitaz_fsffrance_vm_gnt_write-c.rrd.xml z2-7.pokersource.info-kvm_io-slitaz_fsffrance_vm_gnt_write-c.rrd.new + cp z2-7.pokersource.info-kvm_io-slitaz_fsffrance_vm_gnt_write-c.rrd.new /var/lib/munin/pokersource.info/z2-7.pokersource.info-kvm_io-slitaz_fsffrance_vm_gnt_write-c.rrd + su munin -c /usr/bin/munin-cron

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