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
|
# -*- coding: utf-8 -*-
# Copyright 2014-2015 Red Hat, Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
import argparse
import logging
import os
import sys
import yaml
from os_net_config import impl_eni
from os_net_config import impl_ifcfg
from os_net_config import impl_iproute
from os_net_config import objects
from os_net_config import version
logger = logging.getLogger(__name__)
def parse_opts(argv):
parser = argparse.ArgumentParser(
description='Configure host network interfaces using a JSON'
' config file format.')
parser.add_argument('-c', '--config-file', metavar='CONFIG_FILE',
help="""path to the configuration file.""",
default='/etc/os-net-config/config.yaml')
parser.add_argument('-m', '--mapping-file', metavar='MAPPING_FILE',
help="""path to the interface mapping file.""",
default='/etc/os-net-config/mapping.yaml')
parser.add_argument('-p', '--provider', metavar='PROVIDER',
help="""The provider to use."""
"""One of: ifcfg, eni, iproute.""",
default=None)
parser.add_argument('-r', '--root-dir', metavar='ROOT_DIR',
help="""The root directory of the filesystem.""",
default='')
parser.add_argument('--detailed-exit-codes',
action='store_true',
help="""Enable detailed exit codes. """
"""If enabled an exit code of '2' means """
"""that files were modified."""
"""Disabled by default.""",
default=False)
parser.add_argument(
'-d', '--debug',
dest="debug",
action='store_true',
help="Print debugging output.",
required=False)
parser.add_argument(
'-v', '--verbose',
dest="verbose",
action='store_true',
help="Print verbose output.",
required=False)
parser.add_argument('--version', action='version',
version=version.version_info.version_string())
parser.add_argument(
'--noop',
dest="noop",
action='store_true',
help="Return the configuration commands, without applying them.",
required=False)
parser.add_argument(
'--no-activate',
dest="no_activate",
action='store_true',
help="Install the configuration but don't start/stop interfaces.",
required=False)
parser.add_argument(
'--cleanup',
dest="cleanup",
action='store_true',
help="Cleanup unconfigured interfaces.",
required=False)
parser.add_argument(
'--persist-mapping',
dest="persist_mapping",
action='store_true',
help="Make aliases defined in the mapping file permanent "
"(WARNING, permanently renames nics).",
required=False)
opts = parser.parse_args(argv[1:])
return opts
def configure_logger(verbose=False, debug=False):
LOG_FORMAT = '[%(asctime)s] [%(levelname)s] %(message)s'
DATE_FORMAT = '%Y/%m/%d %I:%M:%S %p'
log_level = logging.WARN
if debug:
log_level = logging.DEBUG
elif verbose:
log_level = logging.INFO
logging.basicConfig(format=LOG_FORMAT, datefmt=DATE_FORMAT,
level=log_level)
def main(argv=sys.argv):
opts = parse_opts(argv)
configure_logger(opts.verbose, opts.debug)
logger.info('Using config file at: %s' % opts.config_file)
if opts.mapping_file:
logger.info('Using mapping file at: %s' % opts.mapping_file)
iface_array = []
provider = None
if opts.provider:
if opts.provider == 'ifcfg':
provider = impl_ifcfg.IfcfgNetConfig(noop=opts.noop,
root_dir=opts.root_dir)
elif opts.provider == 'eni':
provider = impl_eni.ENINetConfig(noop=opts.noop,
root_dir=opts.root_dir)
elif opts.provider == 'iproute':
provider = impl_iproute.IPRouteNetConfig(noop=opts.noop,
root_dir=opts.root_dir)
else:
logger.error('Invalid provider specified.')
return 1
else:
if os.path.exists('%s/etc/sysconfig/network-scripts/' % opts.root_dir):
provider = impl_ifcfg.IfcfgNetConfig(noop=opts.noop,
root_dir=opts.root_dir)
elif os.path.exists('%s/etc/network/' % opts.root_dir):
provider = impl_eni.ENINetConfig(noop=opts.noop,
root_dir=opts.root_dir)
else:
logger.error('Unable to set provider for this operating system.')
return 1
# Read config file containing network configs to apply
if os.path.exists(opts.config_file):
with open(opts.config_file) as cf:
iface_array = yaml.load(cf.read()).get("network_config")
logger.debug('network_config JSON: %s' % str(iface_array))
else:
logger.error('No config file exists at: %s' % opts.config_file)
return 1
if not isinstance(iface_array, list):
logger.error('No interfaces defined in config: %s' % opts.config_file)
return 1
# Read the interface mapping file, if it exists
# This allows you to override the default network naming abstraction
# mappings by specifying a specific nicN->name or nicN->MAC mapping
if os.path.exists(opts.mapping_file):
with open(opts.mapping_file) as cf:
iface_map = yaml.load(cf.read())
iface_mapping = iface_map.get("interface_mapping")
logger.debug('interface_mapping JSON: %s' % str(iface_mapping))
persist_mapping = opts.persist_mapping
logger.debug('persist_mapping: %s' % persist_mapping)
else:
iface_mapping = None
persist_mapping = False
for iface_json in iface_array:
iface_json.update({'nic_mapping': iface_mapping})
iface_json.update({'persist_mapping': persist_mapping})
obj = objects.object_from_json(iface_json)
provider.add_object(obj)
files_changed = provider.apply(cleanup=opts.cleanup,
activate=not opts.no_activate)
if opts.noop:
for location, data in files_changed.items():
print("File: %s\n" % location)
print(data)
print("----")
if opts.detailed_exit_codes and len(files_changed) > 0:
return 2
return 0
if __name__ == '__main__':
sys.exit(main(sys.argv))
|
