#!/usr/bin/python # -*- coding: utf-8 -*- # Copyright (C) 2014 Johann Schmitz # # 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 =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'), ('cpu', self.hostname, 'CPU usage', '--base 1000 -l 0 --upper-limit 100', 'CPU usage in %'), ('buffer', self.hostname, 'Buffer usage', '--base 1000 -l 0 --upper-limit 100', 'Buffer usage in %'), ] for datarow, hostname, title, args, vlabel in data_def: print """multigraph juniper_{datarow} host_name {hostname} graph_title {title} graph_vlabel {vlabel} graph_args {args} graph_category fw graph_info {title}""".format(datarow=datarow, hostname=hostname, title=title, args=args, vlabel=vlabel) 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()