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|
"""
Notification to multiple addresses
++++++++++++++++++++++++++++++++++
Send SNMP TRAP notifications to multiple Managers using the
following options:
* SNMPv2c
* with community name 'public'
* over IPv4/UDP
* using Twisted framework for network transport
* send TRAP notification
* to multiple Managers at 127.0.0.1:162, 127.0.0.2:162 and 127.0.0.3:162
* with TRAP ID 'coldStart' specified as an OID
* include managed objects information:
* 1.3.6.1.2.1.1.1.0 = 'Example Notificator'
* 1.3.6.1.2.1.1.5.0 = 'Notificator Example'
Functionally similar to:
| $ snmptrap -v2c -c public 127.0.0.1 0 1.3.6.1.6.3.1.1.5.1 1.3.6.1.2.1.1.1.0 s 'Example notification' 1.3.6.1.2.1.1.5.0 s 'Notificator Example'
and
| $ snmptrap -v2c -c public 127.0.0.2 0 1.3.6.1.6.3.1.1.5.1 1.3.6.1.2.1.1.1.0 s 'Example notification' 1.3.6.1.2.1.1.5.0 s 'Notificator Example'
and
| $ snmptrap -v2c -c public 127.0.0.3 0 1.3.6.1.6.3.1.1.5.1 1.3.6.1.2.1.1.1.0 s 'Example notification' 1.3.6.1.2.1.1.5.0 s 'Notificator Example'
"""#
from twisted.internet import reactor
from pysnmp.entity import engine, config
from pysnmp.carrier.twisted.dgram import udp
from pysnmp.entity.rfc3413 import context
from pysnmp.entity.rfc3413.twisted import ntforg
from pysnmp.proto import rfc1902
# Create SNMP engine instance
snmpEngine = engine.SnmpEngine()
# SNMPv2c setup
# SecurityName <-> CommunityName mapping
config.addV1System(snmpEngine, 'my-area', 'public')
# Specify security settings per SecurityName (SNMPv2c -> 1)
config.addTargetParams(snmpEngine, 'my-creds', 'my-area', 'noAuthNoPriv', 1)
# Transport setup
#
# Setup transport endpoint and bind it with security settings yielding
# a target name. Since Notifications could be sent to multiple Managers
# at once, more than one target entry may be configured (and tagged).
#
# UDP/IPv4
config.addTransport(
snmpEngine,
udp.domainName,
udp.UdpTwistedTransport().openClientMode()
)
# First target
config.addTargetAddr(
snmpEngine, 'my-nms-1',
udp.domainName, ('127.0.0.1', 162),
'my-creds',
tagList='all-my-managers'
)
# Second target
config.addTargetAddr(
snmpEngine, 'my-nms-2',
udp.domainName, ('127.0.0.2', 162),
'my-creds',
tagList='all-my-managers'
)
# Third target
config.addTargetAddr(
snmpEngine, 'my-nms-3',
udp.domainName, ('127.0.0.3', 162),
'my-creds',
tagList='all-my-managers'
)
# Specify what kind of notification should be sent (TRAP or INFORM),
# to what targets (chosen by tag) and what filter should apply to
# the set of targets (selected by tag)
config.addNotificationTarget(
snmpEngine, 'my-notification', 'my-filter', 'all-my-managers', 'trap'
)
# Allow NOTIFY access to Agent's MIB by this SNMP model (2), securityLevel
# and SecurityName
config.addContext(snmpEngine, '')
config.addVacmUser(snmpEngine, 2, 'my-area', 'noAuthNoPriv', (), (), (1,3,6))
# Create Notification Originator App instance.
ntfOrg = ntforg.NotificationOriginator()
# Create default SNMP context where contextEngineId == SnmpEngineId
snmpContext = context.SnmpContext(snmpEngine)
# Build and submit notification message to dispatcher
ntfOrg.sendVarBinds(
snmpEngine,
# Notification targets
'my-notification',
# SNMP Context
snmpContext,
# contextName
'',
# notification name (SNMPv2-MIB::coldStart)
(1,3,6,1,6,3,1,1,5,1),
# notification objects instance index
None,
# additional var-binds: ( (oid, value), ... )
[ ((1,3,6,1,2,1,1,1,0), rfc1902.OctetString('Example Notificator')),
((1,3,6,1,2,1,1,5,0), rfc1902.OctetString('Notificator Example')) ]
)
print('Notification is scheduled to be sent')
# Schedule Twisted mainloop shutdown shortly
reactor.callWhenRunning(lambda: reactor.stop())
# Run Twisted main loop
reactor.run()
|
