rrdtool update now shows blank RRD graphs 🔗 link

Not sure if this is a bug with RRD, or a change in the way RRD draws the trends graphs, but after the below YUM transaction (CentOS 5.5, Xymon 4.2.3-1), all of my graphs are now missing text (e.g. http://imgur.com/n8AGe.png).

Can anyone venture a guess as to why?  Bug in RRD or in Xymon?

[root at system ~]# grep rrd /var/log/yum.log      Jul 25 14:31:54 Updated: rrdtool-1.4.4-1.el5.rf.x86_64          Jul 25 14:31:54 Updated: perl-rrdtool-1.4.4-1.el5.rf.x86_64                 Jul 25 14:31:54 Updated: rrdtool-devel-1.4.4-1.el5.rf.x86_64                Sep 29 14:55:12 Installed: lib64rrdtool2-1.2.18-1.rhel5.x86_64              Sep 29 14:55:13 Installed: librrdtool2-1.2.18-1.rhel5.i386                  Sep 29 14:55:14 Installed: librrdtool2-devel-1.2.18-1.rhel5.i386             Sep 29 14:55:14 Installed: lib64rrdtool2-devel-1.2.18-1.rhel5.x86_64         Sep 29 14:55:14 Erased: rrdtool-devel     [root at system ~]# cat /etc/redhat-release      CentOS release 5.5 (Final)    [root at system ~]# rpm -qa | grep xymo     xymon-4.2.3-1.rhel5    xymon-client-4.2.3-1.rhel5 
Thanks,
Matt.

Unix System Administrator
Computer Science Corporation

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In <user-ff9559b23077@xymon.invalid> Matthew Moldvan <user-ffaad6c7b6c3@xymon.invalid> writes:

First, you need to find out which RRD library Xymon ends up
using. Run an 'ldd $BBHOME/bin/hobbitgraph.cgi' and see whether
it points to the 1.2.18 or 1.4.4 version of librrd.

My guess is that it uses the 1.2.18 version - it should,
because that's probably the version you have compiled Xymon
with. If it points to the new version, you could try re-
compiling Xymon and see if that helps.

You can also try running rrdtool from the command line.
Something like this should generate a graph for the "ping"
test response times:

rrdtool graph test.png -s 'now-48h' -e now -t 'Ping times' \
  'DEF:p1=/home/xymon/data/rrd/myserver/tcp.conn.rrd:sec:AVERAGE' \
  'LINE2:p1#00FF00'

(Adjust the filename in the "DEF" setting to match whatever 
tcp.conn.rrd file you have for a server).

If the graph in "test.png" has the same problem, then it's 
an RRDtool problem.


Regards,
Henrik