I have more than once found a Munin multi graph set being rendered unreadable by single graph peaking 100 times over the rest of the graphs in the set. The classical example is the Linux (over)committed memory graph on a system leaking memory, peaking in the 100GB area, making the other system memory graphs that are playing along about 1-4GB almost invisible:
One could of course put a hard limit in the RRD file, in my example, at the pysical memory in the machine in question, but this means that I loose oversight by hiding what’s probably a problem. A better solution is to split the graph out, that is, prevent it from graphing in the common memory set, and put it in custom graph. Consider the following munin.conf snipplet:
[my.server.tld]
address my.server.tld
memory.committed.graph no
memory_committed.graph_title Committed Memory
memory_committed.update no
memory_committed.graph_category system
memory_committed.graph_order \
memory=my.server.tld:memory.committed
This produces the following graphs:
Problem solved.
Thanks so much! This is exactly what i was looking for.
Great tip, works perfectly.
Thanks!
This is exactly what I need. Damn that commited memory graph.
Thank you, thank you, thank you.
Thanks a lot!
How could i do this with two or more values (for example Coretemp 1,2,etc.)?
Adam, you can do this for as many graphs in the plot that you want. Something like this, maybe:
[my.server.tld]
address my.server.tld
foo.something.graph no
foo.else.graph.no
foo_something_else.graph_title Something Else
foo_something_else.update no
foo_something_else.graph_category somecategory
foo_something_else.graph_order \
something=my.server.tld:foo.something \
else=my.server.tld:foo.else
could anyone help for …unbound graphs splits….
Hi,
I have added below code in munin.conf, munin shows separate CPU graph for the Virtual Machine but actually their is no graph just graph icon. How can I solve this issue ?
——————
vi /etc/munin/munin.conf
[xyz.com]
address 127.0.0.1
use_node_name yes
#libvirt-cputime.kvm101_cputime.graph no //Uncomment this so the main Graph does not show kvm101
libvirt-cputime_kvm101.graph_title kvm101 CPU
libvirt-cputime_kvm101.update no
libvirt-cputime_kvm101.graph_args -u 100 //Set the Upper limit to 100%
libvirt-cputime_kvm101.kvm101.cdef kvm101,8,* //Multiplier for number of cores (Core i7) to show 100% usage on graph at full cpu usage of VM
libvirt-cputime_kvm101.graph_category Virtual Machines
libvirt-cputime_kvm101.graph_order kvm101=server.domain.com:libvirt-cputime.kvm101_cputime
It is not generating the png file for the virtual Machine.
How to solve this ?
Chetan,
Sorry, this was a very old post, made for munin-1.2 or 1.4. I’m not sure if this trick will work for newer versions of munin (2.x). Please consider posting to the mailing list, see
http://munin-monitoring.org/wiki/HowToGetHelp
and
https://lists.sourceforge.net/lists/listinfo/munin-users
Ingvar