Hello there,
I am trying to configure some custom metrics for our cluster. Initially, I am
creating the same python module example described on ganglia wiki (
http://sourceforge.net/apps/trac/ganglia/wiki/ganglia_gmond_python_modules).
The only different I am doing by respect to the documentation is the directory
areas used for the python modules and the .pyconf files (I am using the ones
provided by Rocks Clusters 5.3). Also, I have changed the name of the metric
to tempHost by respect to the documentation. When I try to load the graphs by
restarting the gmond daemon script, I get the following error message:
Apr 12 12:18:32 rocks /usr/sbin/gmond[16637]: Unable to find the metric
information for 'tempHost'. Possible that the module has not been loaded.
Looking for the loaded modules, I have:
[r...@rocks ~]# lsof -p `pidof gmond` | grep ganglia
gmond 16637 nobody txt REG 104,1 80173 1173831
/opt/ganglia/sbin/gmond
gmond 16637 nobody mem REG 104,1 117066 1076176
/opt/ganglia/lib64/libganglia-3.1.2.so.0.0.0
gmond 16637 nobody mem REG 104,1 117933 1076166
/opt/ganglia/lib64/ganglia/modcpu.so
gmond 16637 nobody mem REG 104,1 115507 1076167
/opt/ganglia/lib64/ganglia/moddisk.so
gmond 16637 nobody mem REG 104,1 115475 1076168
/opt/ganglia/lib64/ganglia/modload.so
gmond 16637 nobody mem REG 104,1 116749 1076169
/opt/ganglia/lib64/ganglia/modmem.so
gmond 16637 nobody mem REG 104,1 115853 1076171
/opt/ganglia/lib64/ganglia/modnet.so
gmond 16637 nobody mem REG 104,1 115219 1076172
/opt/ganglia/lib64/ganglia/modproc.so
gmond 16637 nobody mem REG 104,1 116461 1076174
/opt/ganglia/lib64/ganglia/modsys.so
gmond 16637 nobody mem REG 104,1 26760 1076173
/opt/ganglia/lib64/ganglia/modpython.so
So I don’t understand why the module is loaded by the OS but the host is not
sending any data to generated the corresponding graph (with its corresponding
rrds information). I have cleaned out the rdds files and regenerated them with
the same result. We are running RHEL 5.4 with Rocks Clusters 5.3 and Ganglia
v3.1.2:
[r...@rocks ~]# uname -a
Linux rocks.local 2.6.18-164.el5 #1 SMP Tue Aug 18 15:51:48 EDT 2009 x86_64
x86_64 x86_64 GNU/Linux
Any help will be really appreciated in order to solve this problem.
Regards,
-Hugo
[r...@rocks ~]# python /opt/ganglia/lib64/ganglia/python_modules/hostTemp.py
value for tempHost is 8
/opt/ganglia/lib64/ganglia/python_modules/hostTemp.py
def temp_handler(name):
acpi_file = "/proc/acpi/thermal_zone/THM0/temperature"
try:
f = open(acpi_file, 'r')
except IOError:
return 0
for l in f:
line = l.split()
return int(line[1])
def metric_init(params):
global descriptors
d1 = {'name': 'tempHost',
'call_back': temp_handler,
'time_max': 90,
'value_type': 'uint',
'units': 'C',
'slope': 'both',
'format': '%u',
'description': 'Temperature of host',
'groups': 'health'}
descriptors = [d1]
return descriptors
def metric_cleanup():
'''Clean up the metric module.'''
pass
#This code is for debugging and unit testing
if __name__ == '__main__':
metric_init(None)
for d in descriptors:
v = d['call_back'](d['name'])
print 'value for %s is %u' % (d['name'], v)
/opt/ganglia/etc/conf.d/temp.pyconf
modules {
module {
name = "tempHost"
language = "python"
# The following params are examples only
# They are not actually used by the temp module
param RandomMax {
value = 600
}
param ConstantValue {
value = 112
}
}
}
collection_group {
collect_every = 10
time_threshold = 50
metric {
name = "tempHost"
title = "Temperature"
value_threshold = 70
}
}
--
"Si seus esforços, foram vistos com indefrença, não desanime, que o sol faze un
espectacolo maravilhoso todas as manhãs cuando a maior parte das pessoas, ainda
estam durmindo"
- Anónimo brasileiro
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