forked from vyos/vyos-1x
-
Notifications
You must be signed in to change notification settings - Fork 1
/
test_load_balancning_wan.py
executable file
·189 lines (154 loc) · 6.62 KB
/
test_load_balancning_wan.py
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
#!/usr/bin/env python3
#
# Copyright (C) 2022 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 os
import unittest
import time
from base_vyostest_shim import VyOSUnitTestSHIM
from vyos.configsession import ConfigSessionError
from vyos.ifconfig import Section
from vyos.util import call
from vyos.util import cmd
base_path = ['load-balancing']
def create_netns(name):
return call(f'sudo ip netns add {name}')
def create_veth_pair(local='veth0', peer='ceth0'):
return call(f'sudo ip link add {local} type veth peer name {peer}')
def move_interface_to_netns(iface, netns_name):
return call(f'sudo ip link set {iface} netns {netns_name}')
def rename_interface(iface, new_name):
return call(f'sudo ip link set {iface} name {new_name}')
def cmd_in_netns(netns, cmd):
return call(f'sudo ip netns exec {netns} {cmd}')
def delete_netns(name):
return call(f'sudo ip netns del {name}')
class TestLoadBalancingWan(VyOSUnitTestSHIM.TestCase):
@classmethod
def setUpClass(cls):
super(TestLoadBalancingWan, 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()
def test_table_routes(self):
ns1 = 'ns201'
ns2 = 'ns202'
iface1 = 'eth201'
iface2 = 'eth202'
container_iface1 = 'ceth0'
container_iface2 = 'ceth1'
# Create network namespeces
create_netns(ns1)
create_netns(ns2)
create_veth_pair(iface1, container_iface1)
create_veth_pair(iface2, container_iface2)
move_interface_to_netns(container_iface1, ns1)
move_interface_to_netns(container_iface2, ns2)
call(f'sudo ip a add 203.0.113.10/24 dev {iface1}')
call(f'sudo ip a add 192.0.2.10/24 dev {iface2}')
call(f'sudo ip link set dev {iface1} up')
call(f'sudo ip link set dev {iface2} up')
cmd_in_netns(ns1, f'ip link set {container_iface1} name eth0')
cmd_in_netns(ns2, f'ip link set {container_iface2} name eth0')
cmd_in_netns(ns1, 'ip a add 203.0.113.1/24 dev eth0')
cmd_in_netns(ns2, 'ip a add 192.0.2.1/24 dev eth0')
cmd_in_netns(ns1, 'ip link set dev eth0 up')
cmd_in_netns(ns2, 'ip link set dev eth0 up')
# Set load-balancing configuration
self.cli_set(base_path + ['wan', 'interface-health', iface1, 'failure-count', '2'])
self.cli_set(base_path + ['wan', 'interface-health', iface1, 'nexthop', '203.0.113.1'])
self.cli_set(base_path + ['wan', 'interface-health', iface1, 'success-count', '1'])
self.cli_set(base_path + ['wan', 'interface-health', iface2, 'failure-count', '2'])
self.cli_set(base_path + ['wan', 'interface-health', iface2, 'nexthop', '192.0.2.1'])
self.cli_set(base_path + ['wan', 'interface-health', iface2, 'success-count', '1'])
# commit changes
self.cli_commit()
time.sleep(5)
# Check default routes in tables 201, 202
# Expected values
original = 'default via 203.0.113.1 dev eth201'
tmp = cmd('sudo ip route show table 201')
self.assertEqual(tmp, original)
original = 'default via 192.0.2.1 dev eth202'
tmp = cmd('sudo ip route show table 202')
self.assertEqual(tmp, original)
# Delete veth interfaces and netns
for iface in [iface1, iface2]:
call(f'sudo ip link del dev {iface}')
delete_netns(ns1)
delete_netns(ns2)
def test_check_chains(self):
ns1 = 'nsA'
ns2 = 'nsB'
iface1 = 'veth1'
iface2 = 'veth2'
container_iface1 = 'ceth0'
container_iface2 = 'ceth1'
mangle_isp1 = """table ip mangle {
chain ISP_veth1 {
counter ct mark set 0xc9
counter meta mark set 0xc9
counter accept
}
}"""
mangle_isp2 = """table ip mangle {
chain ISP_veth2 {
counter ct mark set 0xca
counter meta mark set 0xca
counter accept
}
}"""
# Create network namespeces
create_netns(ns1)
create_netns(ns2)
create_veth_pair(iface1, container_iface1)
create_veth_pair(iface2, container_iface2)
move_interface_to_netns(container_iface1, ns1)
move_interface_to_netns(container_iface2, ns2)
call(f'sudo ip a add 203.0.113.10/24 dev {iface1}')
call(f'sudo ip a add 192.0.2.10/24 dev {iface2}')
call(f'sudo ip link set dev {iface1} up')
call(f'sudo ip link set dev {iface2} up')
cmd_in_netns(ns1, f'ip link set {container_iface1} name eth0')
cmd_in_netns(ns2, f'ip link set {container_iface2} name eth0')
cmd_in_netns(ns1, 'ip a add 203.0.113.1/24 dev eth0')
cmd_in_netns(ns2, 'ip a add 192.0.2.1/24 dev eth0')
cmd_in_netns(ns1, 'ip link set dev eth0 up')
cmd_in_netns(ns2, 'ip link set dev eth0 up')
# Set load-balancing configuration
self.cli_set(base_path + ['wan', 'interface-health', iface1, 'failure-count', '2'])
self.cli_set(base_path + ['wan', 'interface-health', iface1, 'nexthop', '203.0.113.1'])
self.cli_set(base_path + ['wan', 'interface-health', iface1, 'success-count', '1'])
self.cli_set(base_path + ['wan', 'interface-health', iface2, 'failure-count', '2'])
self.cli_set(base_path + ['wan', 'interface-health', iface2, 'nexthop', '192.0.2.1'])
self.cli_set(base_path + ['wan', 'interface-health', iface2, 'success-count', '1'])
# commit changes
self.cli_commit()
time.sleep(5)
# Check chains
#call('sudo nft list ruleset')
tmp = cmd(f'sudo nft -s list chain mangle ISP_{iface1}')
self.assertEqual(tmp, mangle_isp1)
tmp = cmd(f'sudo nft -s list chain mangle ISP_{iface2}')
self.assertEqual(tmp, mangle_isp2)
# Delete veth interfaces and netns
for iface in [iface1, iface2]:
call(f'sudo ip link del dev {iface}')
delete_netns(ns1)
delete_netns(ns2)
if __name__ == '__main__':
unittest.main(verbosity=2)