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
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
|
from cloudinit import net
from cloudinit.net import cmdline
from cloudinit.net import eni
from cloudinit.net import network_state
from cloudinit.net import sysconfig
from cloudinit.sources.helpers import openstack
from cloudinit import util
from .helpers import mock
from .helpers import TestCase
import base64
import copy
import gzip
import io
import json
import os
import shutil
import tempfile
DHCP_CONTENT_1 = """
DEVICE='eth0'
PROTO='dhcp'
IPV4ADDR='192.168.122.89'
IPV4BROADCAST='192.168.122.255'
IPV4NETMASK='255.255.255.0'
IPV4GATEWAY='192.168.122.1'
IPV4DNS0='192.168.122.1'
IPV4DNS1='0.0.0.0'
HOSTNAME='foohost'
DNSDOMAIN=''
NISDOMAIN=''
ROOTSERVER='192.168.122.1'
ROOTPATH=''
filename=''
UPTIME='21'
DHCPLEASETIME='3600'
DOMAINSEARCH='foo.com'
"""
DHCP_EXPECTED_1 = {
'name': 'eth0',
'type': 'physical',
'subnets': [{'broadcast': '192.168.122.255',
'control': 'manual',
'gateway': '192.168.122.1',
'dns_search': ['foo.com'],
'type': 'dhcp',
'netmask': '255.255.255.0',
'dns_nameservers': ['192.168.122.1']}],
}
STATIC_CONTENT_1 = """
DEVICE='eth1'
PROTO='static'
IPV4ADDR='10.0.0.2'
IPV4BROADCAST='10.0.0.255'
IPV4NETMASK='255.255.255.0'
IPV4GATEWAY='10.0.0.1'
IPV4DNS0='10.0.1.1'
IPV4DNS1='0.0.0.0'
HOSTNAME='foohost'
UPTIME='21'
DHCPLEASETIME='3600'
DOMAINSEARCH='foo.com'
"""
STATIC_EXPECTED_1 = {
'name': 'eth1',
'type': 'physical',
'subnets': [{'broadcast': '10.0.0.255', 'control': 'manual',
'gateway': '10.0.0.1',
'dns_search': ['foo.com'], 'type': 'static',
'netmask': '255.255.255.0',
'dns_nameservers': ['10.0.1.1']}],
}
def _setup_test(tmp_dir, mock_get_devicelist, mock_sys_netdev_info,
mock_sys_dev_path):
mock_get_devicelist.return_value = ['eth1000']
dev_characteristics = {
'eth1000': {
"bridge": False,
"carrier": False,
"dormant": False,
"operstate": "down",
"address": "07-1C-C6-75-A4-BE",
}
}
def netdev_info(name, field):
return dev_characteristics[name][field]
mock_sys_netdev_info.side_effect = netdev_info
def sys_dev_path(devname, path=""):
return tmp_dir + devname + "/" + path
for dev in dev_characteristics:
os.makedirs(os.path.join(tmp_dir, dev))
with open(os.path.join(tmp_dir, dev, 'operstate'), 'w') as fh:
fh.write("down")
mock_sys_dev_path.side_effect = sys_dev_path
class TestSysConfigRendering(TestCase):
@mock.patch("cloudinit.net.sys_dev_path")
@mock.patch("cloudinit.net.sys_netdev_info")
@mock.patch("cloudinit.net.get_devicelist")
def test_default_generation(self, mock_get_devicelist,
mock_sys_netdev_info,
mock_sys_dev_path):
tmp_dir = tempfile.mkdtemp()
self.addCleanup(shutil.rmtree, tmp_dir)
_setup_test(tmp_dir, mock_get_devicelist,
mock_sys_netdev_info, mock_sys_dev_path)
network_cfg = net.generate_fallback_config()
ns = network_state.parse_net_config_data(network_cfg,
skip_broken=False)
render_dir = os.path.join(tmp_dir, "render")
os.makedirs(render_dir)
renderer = sysconfig.Renderer()
renderer.render_network_state(render_dir, ns)
render_file = 'etc/sysconfig/network-scripts/ifcfg-eth1000'
with open(os.path.join(render_dir, render_file)) as fh:
content = fh.read()
expected_content = """
# Created by cloud-init on instance boot automatically, do not edit.
#
BOOTPROTO=dhcp
DEVICE=eth1000
HWADDR=07-1C-C6-75-A4-BE
NM_CONTROLLED=no
ONBOOT=yes
TYPE=Ethernet
USERCTL=no
""".lstrip()
self.assertEqual(expected_content, content)
def test_openstack_rendering_sample(self):
ex_input = {
"services": [{"type": "dns", "address": "172.19.0.12"}],
"networks": [
{"network_id": "dacd568d-5be6-4786-91fe-750c374b78b4",
"type": "ipv4", "netmask": "255.255.252.0",
"link": "tap1a81968a-79",
"routes": [{"netmask": "0.0.0.0",
"network": "0.0.0.0",
"gateway": "172.19.3.254"}],
"ip_address": "172.19.1.34", "id": "network0"}],
"links": [{"ethernet_mac_address": "fa:16:3e:ed:9a:59",
"mtu": None, "type": "bridge", "id":
"tap1a81968a-79",
"vif_id": "1a81968a-797a-400f-8a80-567f997eb93f"}]}
ex_mac_addrs = {
'fa:16:3e:ed:9a:59': 'eth0',
}
network_cfg = openstack.convert_net_json(
ex_input, known_macs=ex_mac_addrs)
ns = network_state.parse_net_config_data(network_cfg,
skip_broken=False)
tmp_dir = tempfile.mkdtemp()
self.addCleanup(shutil.rmtree, tmp_dir)
render_dir = os.path.join(tmp_dir, "render")
renderer = sysconfig.Renderer()
renderer.render_network_state(render_dir, ns)
render_file = 'etc/sysconfig/network-scripts/ifcfg-eth0'
with open(os.path.join(render_dir, render_file)) as fh:
content = fh.read()
expected_content = """
# Created by cloud-init on instance boot automatically, do not edit.
#
BOOTPROTO=static
DEFROUTE=yes
DEVICE=eth0
GATEWAY=172.19.3.254
HWADDR=fa:16:3e:ed:9a:59
IPADDR=172.19.1.34
NETMASK=255.255.252.0
NM_CONTROLLED=no
ONBOOT=yes
TYPE=Ethernet
USERCTL=no
""".lstrip()
self.assertEqual(expected_content, content)
route_render_file = 'etc/sysconfig/network-scripts/route-eth0'
with open(os.path.join(render_dir, route_render_file)) as fh:
content = fh.read()
expected_content = """
# Created by cloud-init on instance boot automatically, do not edit.
#
ADDRESS0=0.0.0.0
GATEWAY0=172.19.3.254
NETMASK0=0.0.0.0
""".lstrip()
self.assertEqual(expected_content, content)
resolv_render_file = 'etc/resolv.conf'
with open(os.path.join(render_dir, resolv_render_file)) as fh:
content = fh.read()
expected_content = """
; Created by cloud-init on instance boot automatically, do not edit.
;
nameserver 172.19.0.12
""".lstrip()
self.assertEqual(expected_content, content)
rules_render_file = 'etc/udev/rules.d/70-persistent-net.rules'
with open(os.path.join(render_dir, rules_render_file)) as fh:
content = fh.read()
expected_content = "".join([
'SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ',
'ATTR{address}=="fa:16:3e:ed:9a:59", NAME="eth0"\n'])
self.assertEqual(expected_content, content)
class TestEniNetRendering(TestCase):
@mock.patch("cloudinit.net.sys_dev_path")
@mock.patch("cloudinit.net.sys_netdev_info")
@mock.patch("cloudinit.net.get_devicelist")
def test_default_generation(self, mock_get_devicelist,
mock_sys_netdev_info,
mock_sys_dev_path):
tmp_dir = tempfile.mkdtemp()
self.addCleanup(shutil.rmtree, tmp_dir)
_setup_test(tmp_dir, mock_get_devicelist,
mock_sys_netdev_info, mock_sys_dev_path)
network_cfg = net.generate_fallback_config()
ns = network_state.parse_net_config_data(network_cfg,
skip_broken=False)
render_dir = os.path.join(tmp_dir, "render")
os.makedirs(render_dir)
renderer = eni.Renderer()
renderer.render_network_state(render_dir, ns,
eni="interfaces",
links_prefix=None,
netrules=None)
self.assertTrue(os.path.exists(os.path.join(render_dir,
'interfaces')))
with open(os.path.join(render_dir, 'interfaces')) as fh:
contents = fh.read()
expected = """
auto lo
iface lo inet loopback
auto eth1000
iface eth1000 inet dhcp
"""
self.assertEqual(expected.lstrip(), contents.lstrip())
class TestCmdlineConfigParsing(TestCase):
simple_cfg = {
'config': [{"type": "physical", "name": "eth0",
"mac_address": "c0:d6:9f:2c:e8:80",
"subnets": [{"type": "dhcp"}]}]}
def test_cmdline_convert_dhcp(self):
found = cmdline._klibc_to_config_entry(DHCP_CONTENT_1)
self.assertEqual(found, ('eth0', DHCP_EXPECTED_1))
def test_cmdline_convert_static(self):
found = cmdline._klibc_to_config_entry(STATIC_CONTENT_1)
self.assertEqual(found, ('eth1', STATIC_EXPECTED_1))
def test_config_from_cmdline_net_cfg(self):
files = []
pairs = (('net-eth0.cfg', DHCP_CONTENT_1),
('net-eth1.cfg', STATIC_CONTENT_1))
macs = {'eth1': 'b8:ae:ed:75:ff:2b',
'eth0': 'b8:ae:ed:75:ff:2a'}
dhcp = copy.deepcopy(DHCP_EXPECTED_1)
dhcp['mac_address'] = macs['eth0']
static = copy.deepcopy(STATIC_EXPECTED_1)
static['mac_address'] = macs['eth1']
expected = {'version': 1, 'config': [dhcp, static]}
with util.tempdir() as tmpd:
for fname, content in pairs:
fp = os.path.join(tmpd, fname)
files.append(fp)
util.write_file(fp, content)
found = cmdline.config_from_klibc_net_cfg(files=files,
mac_addrs=macs)
self.assertEqual(found, expected)
def test_cmdline_with_b64(self):
data = base64.b64encode(json.dumps(self.simple_cfg).encode())
encoded_text = data.decode()
raw_cmdline = 'ro network-config=' + encoded_text + ' root=foo'
found = cmdline.read_kernel_cmdline_config(cmdline=raw_cmdline)
self.assertEqual(found, self.simple_cfg)
def test_cmdline_with_b64_gz(self):
data = _gzip_data(json.dumps(self.simple_cfg).encode())
encoded_text = base64.b64encode(data).decode()
raw_cmdline = 'ro network-config=' + encoded_text + ' root=foo'
found = cmdline.read_kernel_cmdline_config(cmdline=raw_cmdline)
self.assertEqual(found, self.simple_cfg)
def _gzip_data(data):
with io.BytesIO() as iobuf:
gzfp = gzip.GzipFile(mode="wb", fileobj=iobuf)
gzfp.write(data)
gzfp.close()
return iobuf.getvalue()
|
