This is what I’m getting when we click on a port.
run a ./validate.php again and pastebin the results.
are you running memcache?
I’m not running memcache.
I did upgrade to RRDTool 1.6.0, and things are getting a little better.
Here’s the validate results.
[root@itlibrenms ~]# /opt/librenms/validate.php
====================================
Component | Version
--------- | -------
LibreNMS | 1.30-44-g3ca6f84
DB Schema | 201
PHP | 7.0.21
MySQL | 5.5.52-MariaDB
RRDTool | 1.6.0
SNMP | NET-SNMP 5.7.2
====================================
[OK] Database connection successful
[OK] Database schema correct
Here’s the new results from the RRD command:
RRDTool Command
rrdtool graph /tmp/v7jZySu1Ii5zT5g7 -g --alt-autoscale-max --rigid -E --start 1502206500 --end 1502292900 --width 1219.5 --height 300 -c BACK#EEEEEE00 -c SHADEA#EEEEEE00 -c SHADEB#EEEEEE00 -c FONT#000000 -c CANVAS#FFFFFF00 -c GRID#a5a5a5 -c MGRID#FF9999 -c FRAME#5e5e5e -c ARROW#5e5e5e -R normal --font LEGEND:8:DejaVuSansMono --font AXIS:7:DejaVuSansMono --font-render-mode normal COMMENT:' Now Avg Max' COMMENT:'\n' CDEF:inB= CDEF:outB= CDEF:octets=inB,outB,+ CDEF:doutB=outB,-1,* CDEF:inbits=inB,8,* CDEF:outbits=outB,8,* CDEF:bits=inbits,outbits,+ CDEF:doutbits=doutB,8,* VDEF:95thin=inbits,95,PERCENT VDEF:95thout=outbits,95,PERCENT CDEF:d95thoutn=doutbits,-1,* VDEF:d95thoutn95=d95thoutn,95,PERCENT CDEF:d95thoutn95n=doutbits,doutbits,-,d95thoutn95,-1,*,+ VDEF:d95thout=d95thoutn95n,FIRST VDEF:totin=inB,TOTAL VDEF:avein=inbits,AVERAGE VDEF:totout=outB,TOTAL VDEF:aveout=outbits,AVERAGE VDEF:tot=octets,TOTAL COMMENT:' \n' HRULE:999999999999999#FFFFFF:'Total In ' GPRINT:inbits:LAST:%6.2lf%s GPRINT:inbits:AVERAGE:%6.2lf%s GPRINT:inbits:MAX:%6.2lf%s GPRINT:totin:%6.2lf%sB COMMENT:'\n' HRULE:999999999999990#FFFFFF:' Out' GPRINT:outbits:LAST:%6.2lf%s GPRINT:outbits:AVERAGE:%6.2lf%s GPRINT:outbits:MAX:%6.2lf%s GPRINT:totout:%6.2lf%sB COMMENT:'\n' HRULE:999999999999990#FFFFFF:' Agg' GPRINT:bits:LAST:%6.2lf%s GPRINT:bits:AVERAGE:%6.2lf%s GPRINT:bits:MAX:%6.2lf%s GPRINT:tot:%6.2lf%sB COMMENT:'\n' HRULE:0#999999
RRDTool Output
ERROR: can not parse an empty rpn expressionwhat distro of Linux are you using?
I’m using CentOS 7.
How did you get RRD tool version 1.6.0 on centos 7? I remember while back we had a guy with the same issue when tried to update rrdtool. If remember correctly once he downgraded back 1.4.8 everything started working again.
I grabbed the RPM from the OpenNMS project, and it installed. Interestingly, if I check the management processor of a Palo Alto Firewall, the graph appears and RRDTool appears to generate the data, but nothing appears on the graph.
That’s exactly what that guy did was install from OpenNMS repo and caused these exact same problems. I recommend going back to 1.4.8.
1 Like
I’ve downgraded to 1.4.8, restarted, and I’m back to this error:
RRDTool Command
rrdtool graph /tmp/SHTJRwp3RCTukCXi -g --alt-autoscale-max --rigid -E --start 1502218800 --end 1502305200 --width 1404 --height 307 -c BACK#EEEEEE00 -c SHADEA#EEEEEE00 -c SHADEB#EEEEEE00 -c FONT#000000 -c CANVAS#FFFFFF00 -c GRID#a5a5a5 -c MGRID#FF9999 -c FRAME#5e5e5e -c ARROW#5e5e5e -R normal --font LEGEND:8:DejaVuSansMono --font AXIS:7:DejaVuSansMono --font-render-mode normal COMMENT:' Now Avg Max' COMMENT:'\n' CDEF:inB= CDEF:outB= CDEF:octets=inB,outB,+ CDEF:doutB=outB,-1,* CDEF:inbits=inB,8,* CDEF:outbits=outB,8,* CDEF:bits=inbits,outbits,+ CDEF:doutbits=doutB,8,* VDEF:95thin=inbits,95,PERCENT VDEF:95thout=outbits,95,PERCENT CDEF:d95thoutn=doutbits,-1,* VDEF:d95thoutn95=d95thoutn,95,PERCENT CDEF:d95thoutn95n=doutbits,doutbits,-,d95thoutn95,-1,*,+ VDEF:d95thout=d95thoutn95n,FIRST VDEF:totin=inB,TOTAL VDEF:avein=inbits,AVERAGE VDEF:totout=outB,TOTAL VDEF:aveout=outbits,AVERAGE VDEF:tot=octets,TOTAL COMMENT:' \n' HRULE:999999999999999#FFFFFF:'Total In ' GPRINT:inbits:LAST:%6.2lf%s GPRINT:inbits:AVERAGE:%6.2lf%s GPRINT:inbits:MAX:%6.2lf%s GPRINT:totin:%6.2lf%sB COMMENT:'\n' HRULE:999999999999990#FFFFFF:' Out' GPRINT:outbits:LAST:%6.2lf%s GPRINT:outbits:AVERAGE:%6.2lf%s GPRINT:outbits:MAX:%6.2lf%s GPRINT:totout:%6.2lf%sB COMMENT:'\n' HRULE:999999999999990#FFFFFF:' Agg' GPRINT:bits:LAST:%6.2lf%s GPRINT:bits:AVERAGE:%6.2lf%s GPRINT:bits:MAX:%6.2lf%s GPRINT:tot:%6.2lf%sB COMMENT:'\n' HRULE:0#999999
RRDTool Output
ERROR: String ends after the = sign on 'CDEF:inB='Those outputs for rrd commands contain no rrd files so you have something utterly broken.
Post the output of:
./discovery.php -h HOSTNAME -d
./poller.php -h HOSTNAME -d
1 Like
This all started because a previous instance of LibreNMS crapped out on me, but in the course of trying to figure out what’s wrong with this instance, I was able to go back to the previous instance and fix what was broken after an update.
Hi guys, just wanted to add I’ve had the same issue as mentioned here. Installed rrdtool 1.6 from OpenNMS repo and now getting graph errors so I guess this route is to be avoided.
Looks like I’ll have to bite the bullet and try from source or fall back on 1.4.
Source is simple to install from 
So I have the opennms 1.6.0 installed on my “all-in-one” box and my graphs are fine…
This week I’ve been trying to set up distributed poller on some test VM’s though (also CentOS 6) and installed the same package, I can’t be certain yet but kkrumm pointed me to this thread and suggested I try a compile from source instead to rule out the opennms 1.6.0 package.
When I try running the poller it eventually freezes at some point on one of the RRD commands… and nothing is ever getting written to my actual remote rrdcached server. Tomorrow I can try and compile from source instead of using the opennms 1.6.0 package if you guys think that might help. Also open to suggestion on if there’s anything else I might need to check as to why no files are getting written to the remote rrdcached server. The goal was to use 1.6.0 so we didn’t need shared NFS since supposedly 1.6.0 allows remote file writing I’ve read on your docs.
Update - looks like it may have just been a group permissions error. Only change we did this morning troubleshooting was adding chown g+w for librenms to the rrdcached servers /opt/librenms/rrd folder and then I tried letting the poller server run again and BAM I had files creating just fine. (still on the OpenNMS 1.6.0 rrdtool install for CentOS 6)