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contrib-munin/plugins/router/snmp__juniper

191 lines
5.3 KiB
Python
Executable File

#!/usr/bin/python
# -*- coding: utf-8 -*-
# Copyright (C) 2014 Johann Schmitz <johann@j-schmitz.net>
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU Library General Public License as published by
# the Free Software Foundation; version 2 only
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU Library General Public License for more details.
#
# You should have received a copy of the GNU Library General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
#
"""
=head1 NAME
snmp__juniper - Health monitoring plugin for Juniper firewalls.
=head1 CONFIGURATION
Make sure your Juniper device is accessible via SNMP (e.g. via snmpwalk) and the munin-node
has been configured correctly.
=head1 MAGIC MARKERS
#%# family=snmpauto
#%# capabilities=snmpconf
=head1 VERSION
0.0.1
=head1 BUGS
Open a ticket at https://github.com/ercpe/contrib if you find one.
=head1 AUTHOR
Johann Schmitz <johann@j-schmitz.net>
=head1 LICENSE
GPLv2
=cut
"""
import re
import sys
import os
import logging
from pysnmp.entity.rfc3413.oneliner import cmdgen
host = None
port = os.getenv('port', 161)
community = os.getenv('community', None)
debug = bool(os.getenv('MUNIN_DEBUG', os.getenv('DEBUG', 0)))
if debug:
logging.basicConfig(level=logging.DEBUG, format='%(asctime)s %(levelname)-7s %(message)s')
try:
match = re.search("^(?:|.*\/)snmp_([^_]+)_juniper$", sys.argv[0])
host = match.group(1)
request = match.group(2)
match = re.search("^([^:]+):(\d+)$", host)
if match is not None:
host = match.group(1)
port = match.group(2)
except:
pass
jnxOperatingTable = '1.3.6.1.4.1.2636.3.1.13.1.5'
jnxOperatingTemp = '1.3.6.1.4.1.2636.3.1.13.1.7'
jnxOperatingCPU = '1.3.6.1.4.1.2636.3.1.13.1.8'
jnxOperatingBuffer = '1.3.6.1.4.1.2636.3.1.13.1.11'
class JunOSSnmpClient(object):
def __init__(self, host, port, community):
self.hostname = host
self.transport = cmdgen.UdpTransportTarget((host, int(port)))
self.auth = cmdgen.CommunityData('test-agent', community)
self.gen = cmdgen.CommandGenerator()
def get_devices(self):
errorIndication, errorStatus, errorIndex, varBindTable = self.gen.bulkCmd(
self.auth,
self.transport,
0, 20,
jnxOperatingTable)
# ignoreNonIncreasingOids=True) # only available with pysnmp >= 4.2.4 (?)
if errorIndication:
logging.error("SNMP bulkCmd for devices failed: %s, %s, %s" % (errorIndication, errorStatus, errorIndex))
return {}
devices = {}
for row in varBindTable:
for name, value in row:
if not str(name).startswith(jnxOperatingTable):
continue
if 'Routing Engine' in str(value):
devices[str(name)[len(jnxOperatingTable):]] = re.sub("[^\w]", '_', str(value).replace(' Routing Engine', ''))
return devices
def get_one(self, prefix_oid, suffix):
oid = prefix_oid + suffix
errorIndication, errorStatus, errorIndex, varBindTable = self.gen.getCmd(
self.auth,
self.transport,
oid)
if errorIndication:
logging.error("SNMP getCmd for %s failed: %s, %s, %s" % (oid, errorIndication, errorStatus, errorIndex))
return None
return int(varBindTable[0][1])
def get_data(self):
devs = self.get_devices()
return {
'temp': dict([(name, self.get_one(jnxOperatingTemp, suffix)) for suffix, name in devs.iteritems()]),
'cpu': dict([(name, self.get_one(jnxOperatingCPU, suffix)) for suffix, name in devs.iteritems()]),
'buffer': dict([(name, self.get_one(jnxOperatingBuffer, suffix)) for suffix, name in devs.iteritems()]),
}
def print_config(self):
devices = self.get_devices()
data_def = [
('temp', self.hostname, 'System temperature', '--base 1000', 'System temperature in C', 'system'),
('cpu', self.hostname, 'CPU usage', '--base 1000 -l 0 --upper-limit 100', 'CPU usage in %', 'system'),
('buffer', self.hostname, 'Buffer usage', '--base 1000 -l 0 --upper-limit 100', 'Buffer usage in %', 'system'),
]
for datarow, hostname, title, args, vlabel, category in data_def:
print """multigraph juniper_{datarow}
host_name {hostname}
graph_title {title}
graph_vlabel {vlabel}
graph_args {args}
graph_category {category}
graph_info {title}""".format(datarow=datarow, hostname=hostname, title=title, args=args, vlabel=vlabel, category=category)
for suffix, node in devices.iteritems():
ident = "%s_%s" % (datarow, node)
print """{label}.info {title} on {node}
{label}.label {node}
{label}.type GAUGE
{label}.min 0""".format(title=title, label=ident, node=node)
def execute(self):
data = self.get_data()
for pre, values in data.iteritems():
print "multigraph juniper_%s" % pre
for node, value in values.iteritems():
print "%s_%s.value %s" % (pre, node, value)
c = JunOSSnmpClient(host, port, community)
if "snmpconf" in sys.argv[1:]:
print "require 1.3.6.1.4.1.2636.3.1.13.1.5"
sys.exit(0)
else:
if not (host and port and community):
print "# Bad configuration. Cannot run with Host=%s, port=%s and community=%s" % (host, port, community)
sys.exit(1)
if "config" in sys.argv[1:]:
c.print_config()
else:
c.execute()
# for Munin Plugin Gallery
# graph_category network