Hi
I'm writting a python module to check the status of a RAID, this is the module:
import os
def raid_handler(name):
tw_cli = "sudo /usr/local/bin/tw_cli /c0/u0 show status"
out = os.popen(tw_cli)
f = out.read(18)
print f
if f == '/c0/u0 status = OK':
return 1
else:
return 2
def metric_init(params):
global descriptors
d1 = {'name': 'unit_status',
'call_back': raid_handler,
'time_max': 90,
'value_type': 'uint',
'units': '',
'slope': 'both',
'format': '%u',
'description': 'catacrocker',
'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)
The output of the command tw_cli /c0/u0 show status is:
/c0/u0 status = OK
and I have some problems: when I test the module, executing:
[r...@oceano ~]# python /usr/lib64/ganglia/python_modules/raid_status.py
it works well (RAID os OK and it returns "value for unit_status is 1"), but when
is gmond who use it, it no works, the graphs shown value 2; I also add the line
"print f" for test and to see the value of f, and it's value is "/c0/u0 status
= OK", nobody has been added to sudoers so it has the correct permissions. The
other lines of the module are ok (I used it as template for other similar
modules that work very well) so the problem is o the raid_handler function.
I've tried with this other raid_handler:
def raid_handler(name):
tw_cli = "sudo /usr/local/bin/tw_cli /c0/u0 show status"
out = os.popen(tw_cli)
f = out.read(18)
l = f.split()
if l[3] == "OK":
return 1
else:
return 2
When I test it, it works:
[r...@oceano ~]# python /usr/lib64/ganglia/python_modules/raid_status.py
value for unit_status is 1
I also add the lines "print l" and "print l[3]" for test and to see the value of
l and l[3], and it's values are ['/c0/u0', 'status', '=', 'OK'] and OK. The
graphs don't shown any value, and the /var/log/messages shows:
Mar 8 14:34:35 oceano /usr/sbin/gmond[16660]: [PYTHON] Can't call the metric
handler function for [unit_status] in the python module [raid_status].
What happens?
I need help please
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