Carlo,
The permissions were the culprit! Thanks for spotting that. It appears
to have worked. Here's the complete script, quick and dirty version.
#!/usr/bin/perl
# $oldxmlfile="cpu_pool_idle.xml";
# $oldrrdfile="cpu_pool_idle.rrd";
# $newrrdfile="cpu_pool_idle_new.rrd";
# $newxmlfile="cpu_pool_idle_new.xml";
$oldxmlfile="pkts_in.xml";
$oldrrdfile="pkts_in.rrd";
$newrrdfile="pkts_in_new.rrd";
$newxmlfile="pkts_in_new.xml";
$appendxmlfile="append.xml";
system("rrdtool dump $oldrrdfile > $oldxmlfile");
open OLDXML, ("< $oldxmlfile");
open NEWXML, ("> $newxmlfile");
open APPENDXML, ("< $appendxmlfile");
my(@oldxml) = <OLDXML>; # read file into list
my(@appxml) = <APPENDXML>;
for (@oldxml) {
if (! /<\/rrd\>/) {
print NEWXML $_;
} else {
for $appline (@appxml) {
print NEWXML $appline;
}
print NEWXML $_;
last;
}
}
close (OLDXML);
close (NEWXML);
close (APPLENDXML);
system("rrdtool restore $newxmlfile $newrrdfile");
# Fix ownership and perms
system("chown nobody.system $newrrdfile");
system("chmod 666 $newrrdfile");
system("/etc/rc.d/init.d/gmetad stop");
system("cp -p $oldrrdfile $oldrrdfile.orig");
system("cp -p $newrrdfile $oldrrdfile");
system("/etc/rc.d/init.d/gmetad start");
David Wong
Senior Systems Engineer
Management Dynamics, Inc.
Phone: 201-804-6127
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-----Original Message-----
From: Carlo Marcelo Arenas Belon [mailto:[EMAIL PROTECTED]
Sent: Wednesday, January 30, 2008 9:52 PM
To: David Wong
Cc: [email protected]
Subject: Re: [Ganglia-general] HELP! Adding a new RRA to an RRD
On Wed, Jan 30, 2008 at 02:11:57PM -0500, David Wong wrote:
nice setup, but be sure gmetad is down when touching the rrd.
<SNIP>
> Can someone tell me what I'm doing wrong here? Do you have a better
> suggestion?
little rough and untested but hopefully will help..
<SNIP>
> system("rrdtool restore $newxmlfile $newrrdfile");
>
> system("cp -p $oldrrdfile $oldrrdfile.org");
> system("cp -p $newrrdfile $oldrrdfile");
system("chmod `stat -c'%a' $oldrrdfile` $newrrdfile");
system("chown `stat -c'%U:%G' $oldrrdfile` $newrrdfile");
Carlo
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