All graphs except Home & PullExec are showing empty datapoint

[NootnootDuck]

Hello,

I've installed a fresh 0.99f on an education lab, and I have troubles with populating the graphs.
I'm using admin account to log to the vCenter (it's a lab!) and inventory is generated fully.

There is an "Internal Server Error" showing on many graphs, with the following stacktrace ending:
step = reduce(lcm,[s.step for s in seriesList]) TypeError: reduce() of empty sequence with no initial value

I've made a test before with the previous version (0.99e) and it was working well...
Is there anything I'm forgetting to have it working?

[rschitz]

Hi, could you post some logs please?

[NootnootDuck]

Sure, which ones do you need in particular?

below the request/response of the All Cluster Full Stats CPU/RAM usage:

REQUEST
Request details
Url 	api/datasources/proxy/1/render
Method 	POST
Content-Type 	application/x-www-form-urlencoded
X-Grafana-Org-Id 	1
Accept 	application/json, text/plain, */*
Request parameters
target 	alias(asPercent(sumSeries(vmw.*.*.*.quickstats.cpu.usage), sumSeries(vmw.*.*.*.quickstats.cpu.effective)), 'cpu.usage')
target 	alias(diffSeries(asPercent(sumSeries(vmw.*.*.*.quickstats.mem.usage), sumSeries(vmw.*.*.*.quickstats.mem.effective)), alias(asPercent(sumSeries(vmw.*.*.*.quickstats.cpu.usage), sumSeries(vmw.*.*.*.quickstats.cpu.effective)), 'cpu.usage')), 'mem.usage')
target 	alias(asPercent(sumSeries(vmw.*.*.*.quickstats.vRAM), sumSeries(vmw.*.*.*.quickstats.mem.effective)), 'mem.allocated')
from 	-1h
until 	now
format 	json
maxDataPoints 	580 

RESPONSE
Graphite encountered an unexpected error while handling your request.
Please contact your site administrator if the problem persists.
Traceback (most recent call last)
	File /usr/lib/python2.7/dist-packages/django/core/handlers/base.py, line 111, in get_response response = wrapped_callback(request, *callback_args, **callback_kwargs)
	File /usr/lib/python2.7/dist-packages/graphite/render/views.py, line 110, in renderView seriesList = evaluateTarget(requestContext, target)
	File /usr/lib/python2.7/dist-packages/graphite/render/evaluator.py, line 10, in evaluateTarget result = evaluateTokens(requestContext, tokens)
	File /usr/lib/python2.7/dist-packages/graphite/render/evaluator.py, line 21, in evaluateTokens return evaluateTokens(requestContext, tokens.expression)
	File /usr/lib/python2.7/dist-packages/graphite/render/evaluator.py, line 28, in evaluateTokens args = [evaluateTokens(requestContext, arg) for arg in tokens.call.args]
	File /usr/lib/python2.7/dist-packages/graphite/render/evaluator.py, line 21, in evaluateTokens return evaluateTokens(requestContext, tokens.expression)
	File /usr/lib/python2.7/dist-packages/graphite/render/evaluator.py, line 29, in evaluateTokens return func(requestContext, *args)
	File /usr/lib/python2.7/dist-packages/graphite/render/functions.py, line 431, in asPercent normalize([seriesList])
	File /usr/lib/python2.7/dist-packages/graphite/render/functions.py, line 120, in normalize step = reduce(lcm,[s.step for s in seriesList]) TypeError: reduce() of empty sequence with no initial value

[NootnootDuck]

My bad, I've forgot to specify the VI collect.
I've enabled it and it works now!