124 lines
3.5 KiB
Python
Executable File
124 lines
3.5 KiB
Python
Executable File
#!/usr/bin/env python
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#
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# Plugin to monitor status of Floating IPs in Nova
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#
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# To monitor instance states, link instance_states to this file.
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# E.g.
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# ln -s /usr/share/munin/plugins/nova_instance_states /etc/munin/plugins/
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#
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# Needs following minimal configuration in plugin-conf.d/nova:
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# [nova_*]
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# user nova
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#
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# Magic markers
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#%# capabilities=autoconf suggest
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#%# family=auto
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import sys
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try:
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from nova import context
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from nova import db
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from nova import flags
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from nova import utils
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from nova.compute import power_state
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except ImportError:
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successful_import = False
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else:
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successful_import = True
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class InstanceState(object):
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instance_counts = None
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states = None
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@classmethod
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def init(cls, metric):
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if cls.states and cls.instance_counts:
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return
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ctxt = context.get_admin_context()
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instances = db.instance_get_all(ctxt)
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cls.instance_counts = {}
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instance_types = {}
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for it in db.instance_type_get_all(ctxt, True):
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instance_types[it['id']] = it['name']
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for instance in instances:
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i = dict(instance)
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i['instance_type'] = i['type'] = instance_types.get(
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instance.instance_type_id,
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'(unknown')
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val = cls.instance_counts.get(i[metric], 0)
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cls.instance_counts[i[metric]] = val + 1
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cls.states = cls.instance_counts.keys()
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@classmethod
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def get_states(cls, metric):
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InstanceState.init(metric)
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return cls.states
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@classmethod
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def get_instance_counts(cls, metric):
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InstanceState.init(metric)
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return cls.instance_counts
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def get_name(metric, code):
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if metric == "power_state":
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return power_state.name(code)
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elif metric in ["root_gb", "ephemeral_gb"]:
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return "%d gb" % code
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else:
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return code
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def print_config(metric):
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states = InstanceState.get_states(metric)
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print 'graph_title Nova Instance %s' % metric
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print 'graph_vlabel instances'
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print 'graph_args --base 1000 --lower-limit 0'
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print 'graph_category cloud'
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print 'graph_scale no'
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print 'graph_info This graph shows the number of instances by %s' % metric
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for state in states:
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print '%s.label %s' % (state, get_name(metric, state))
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print '%s.draw LINE2' % state
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print '%s.info %s IPs' % (state, state)
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def print_values(metric):
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status = InstanceState.get_instance_counts(metric)
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for (state, value) in status.iteritems():
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print '%s.value %s' % (state, value)
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def print_suggest():
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suggest = [ "vm_state",
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"vcpus",
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"task_state",
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"root_gb",
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"ephemeral_gb",
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"power_state",
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"memory_mb",
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"instance_type_id",
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]
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print "\n".join(suggest)
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if __name__ == '__main__':
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argv = sys.argv[:]
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utils.default_flagfile()
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flags.FLAGS(sys.argv)
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metric = argv[0].split('nova_instance_').pop() or 'vm_state'
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if len(argv) > 1:
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if argv[1] == 'config':
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print_config(metric)
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elif argv[1] == 'suggest':
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print_suggest()
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elif argv[1] == 'autoconf':
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if not successful_import:
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print 'no (failed import nova module)'
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sys.exit(0)
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else:
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print 'yes'
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elif successful_import:
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print_values(metric)
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