1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
|
#!/usr/bin/env python3
#
# Copyright (C) 2021 VyOS maintainers and contributors
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 2 or later as
# published by the Free Software Foundation.
#
# 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 General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
import unittest
from base_vyostest_shim import VyOSUnitTestSHIM
from vyos.configsession import ConfigSessionError
from vyos.ifconfig import Section
from vyos.util import cmd
from vyos.util import process_named_running
from vyos.util import read_file
PROCESS_NAME = 'uacctd'
base_path = ['system', 'flow-accounting']
uacctd_conf = '/etc/pmacct/uacctd.conf'
class TestSystemFlowAccounting(VyOSUnitTestSHIM.TestCase):
@classmethod
def setUpClass(cls):
super(cls, cls).setUpClass()
# ensure we can also run this test on a live system - so lets clean
# out the current configuration :)
cls.cli_delete(cls, base_path)
def tearDown(self):
self.cli_delete(base_path)
self.cli_commit()
# after service removal process must no longer run
self.assertFalse(process_named_running(PROCESS_NAME))
def test_basic(self):
buffer_size = '5' # MiB
syslog = 'all'
self.cli_set(base_path + ['buffer-size', buffer_size])
self.cli_set(base_path + ['syslog-facility', syslog])
# You need to configure at least one interface for flow-accounting
with self.assertRaises(ConfigSessionError):
self.cli_commit()
for interface in Section.interfaces('ethernet'):
self.cli_set(base_path + ['interface', interface])
# commit changes
self.cli_commit()
# verify configuration
tmp = cmd('sudo iptables-save -t raw')
for interface in Section.interfaces('ethernet'):
self.assertIn(f'-A VYATTA_CT_PREROUTING_HOOK -i {interface} -m comment --comment FLOW_ACCOUNTING_RULE -j NFLOG --nflog-group 2 --nflog-size 128 --nflog-threshold 100', tmp)
uacctd = read_file(uacctd_conf)
# circular queue size - buffer_size
tmp = int(buffer_size) *1024 *1024
self.assertIn(f'plugin_pipe_size: {tmp}', uacctd)
# transfer buffer size - recommended value from pmacct developers 1/1000 of pipe size
tmp = int(buffer_size) *1024 *1024
# do an integer division
tmp //= 1000
self.assertIn(f'plugin_buffer_size: {tmp}', uacctd)
# when 'disable-imt' is not configured on the CLI it must be present
self.assertIn(f'imt_path: /tmp/uacctd.pipe', uacctd)
self.assertIn(f'imt_mem_pools_number: 169', uacctd)
self.assertIn(f'syslog: {syslog}', uacctd)
self.assertIn(f'plugins: memory', uacctd)
def test_sflow(self):
sampling_rate = '4000'
source_address = '192.0.2.1'
dummy_if = 'dum3841'
agent_address = '192.0.2.2'
sflow_server = {
'1.2.3.4' : {
},
'5.6.7.8' : {
'port' : '6000'
}
}
self.cli_set(['interfaces', 'dummy', dummy_if, 'address', agent_address + '/32'])
self.cli_set(base_path + ['disable-imt'])
# You need to configure at least one interface for flow-accounting
with self.assertRaises(ConfigSessionError):
self.cli_commit()
for interface in Section.interfaces('ethernet'):
self.cli_set(base_path + ['interface', interface])
# You need to configure at least one sFlow or NetFlow protocol, or not
# set "disable-imt" for flow-accounting
with self.assertRaises(ConfigSessionError):
self.cli_commit()
self.cli_set(base_path + ['sflow', 'agent-address', agent_address])
self.cli_set(base_path + ['sflow', 'sampling-rate', sampling_rate])
self.cli_set(base_path + ['sflow', 'source-address', source_address])
for server, server_config in sflow_server.items():
self.cli_set(base_path + ['sflow', 'server', server])
if 'port' in server_config:
self.cli_set(base_path + ['sflow', 'server', server, 'port', server_config['port']])
# commit changes
self.cli_commit()
uacctd = read_file(uacctd_conf)
# when 'disable-imt' is not configured on the CLI it must be present
self.assertNotIn(f'imt_path: /tmp/uacctd.pipe', uacctd)
self.assertNotIn(f'imt_mem_pools_number: 169', uacctd)
self.assertNotIn(f'plugins: memory', uacctd)
for server, server_config in sflow_server.items():
if 'port' in server_config:
self.assertIn(f'sfprobe_receiver[sf_{server}]: {server}', uacctd)
else:
self.assertIn(f'sfprobe_receiver[sf_{server}]: {server}:6343', uacctd)
self.assertIn(f'sfprobe_agentip[sf_{server}]: {agent_address}', uacctd)
self.assertIn(f'sampling_rate[sf_{server}]: {sampling_rate}', uacctd)
self.assertIn(f'sfprobe_source_ip[sf_{server}]: {source_address}', uacctd)
self.cli_delete(['interfaces', 'dummy', dummy_if])
def test_netflow(self):
engine_id = '33'
max_flows = '667'
sampling_rate = '100'
source_address = '192.0.2.1'
dummy_if = 'dum3842'
agent_address = '192.0.2.10'
version = '10'
tmo_expiry = '120'
tmo_flow = '1200'
tmo_icmp = '60'
tmo_max = '50000'
tmo_tcp_fin = '100'
tmo_tcp_generic = '120'
tmo_tcp_rst = '99'
tmo_udp = '10'
netflow_server = {
'11.22.33.44' : {
},
'55.66.77.88' : {
'port' : '6000'
}
}
self.cli_set(['interfaces', 'dummy', dummy_if, 'address', agent_address + '/32'])
for interface in Section.interfaces('ethernet'):
self.cli_set(base_path + ['interface', interface])
self.cli_set(base_path + ['netflow', 'engine-id', engine_id])
self.cli_set(base_path + ['netflow', 'max-flows', max_flows])
self.cli_set(base_path + ['netflow', 'sampling-rate', sampling_rate])
self.cli_set(base_path + ['netflow', 'source-ip', source_address])
self.cli_set(base_path + ['netflow', 'version', version])
# timeouts
self.cli_set(base_path + ['netflow', 'timeout', 'expiry-interval', tmo_expiry])
self.cli_set(base_path + ['netflow', 'timeout', 'flow-generic', tmo_flow])
self.cli_set(base_path + ['netflow', 'timeout', 'icmp', tmo_icmp])
self.cli_set(base_path + ['netflow', 'timeout', 'max-active-life', tmo_max])
self.cli_set(base_path + ['netflow', 'timeout', 'tcp-fin', tmo_tcp_fin])
self.cli_set(base_path + ['netflow', 'timeout', 'tcp-generic', tmo_tcp_generic])
self.cli_set(base_path + ['netflow', 'timeout', 'tcp-rst', tmo_tcp_rst])
self.cli_set(base_path + ['netflow', 'timeout', 'udp', tmo_udp])
# You need to configure at least one netflow server
with self.assertRaises(ConfigSessionError):
self.cli_commit()
for server, server_config in netflow_server.items():
self.cli_set(base_path + ['netflow', 'server', server])
if 'port' in server_config:
self.cli_set(base_path + ['netflow', 'server', server, 'port', server_config['port']])
# commit changes
self.cli_commit()
uacctd = read_file(uacctd_conf)
tmp = 'plugins: '
for server, server_config in netflow_server.items():
tmp += f'nfprobe[nf_{server}],'
tmp += 'memory'
self.assertIn(f'{tmp}', uacctd)
for server, server_config in netflow_server.items():
self.assertIn(f'nfprobe_engine[nf_{server}]: {engine_id}', uacctd)
self.assertIn(f'nfprobe_maxflows[nf_{server}]: {max_flows}', uacctd)
self.assertIn(f'sampling_rate[nf_{server}]: {sampling_rate}', uacctd)
self.assertIn(f'nfprobe_source_ip[nf_{server}]: {source_address}', uacctd)
self.assertIn(f'nfprobe_version[nf_{server}]: {version}', uacctd)
if 'port' in server_config:
self.assertIn(f'nfprobe_receiver[nf_{server}]: {server}', uacctd)
else:
self.assertIn(f'nfprobe_receiver[nf_{server}]: {server}:2055', uacctd)
self.assertIn(f'nfprobe_timeouts[nf_{server}]: expint={tmo_expiry}:general={tmo_flow}:icmp={tmo_icmp}:maxlife={tmo_max}:tcp.fin={tmo_tcp_fin}:tcp={tmo_tcp_generic}:tcp.rst={tmo_tcp_rst}:udp={tmo_udp}', uacctd)
self.cli_delete(['interfaces', 'dummy', dummy_if])
if __name__ == '__main__':
unittest.main(verbosity=2)
|
