网络

updated: 2017-07-18 08:53

网络

网络¶

To use the information in this section, you should have a general understanding of OpenStack Networking, OpenStack Compute, and the integration between the two. You should also have access to a plug-in that implements the Networking API v2.0.

设置环境变量值¶

确保你设置了有关环境变量

举个例子，查看样本shell文件，此文件设置这些环境变量以获得凭证

export OS_USERNAME="admin"
export OS_PASSWORD="password"
export OS_TENANT_NAME="admin"
export OS_AUTH_URL="http://IPADDRESS/v2.0"

获取凭证¶

本节的例子使用 get_credentials 方法:

def get_credentials():
    d = {}
    d['username'] = os.environ['OS_USERNAME']
    d['password'] = os.environ['OS_PASSWORD']
    d['auth_url'] = os.environ['OS_AUTH_URL']
    d['tenant_name'] = os.environ['OS_TENANT_NAME']
    return d

This code resides in the credentials.py file, which all samples import.

Use the get_credentials() method to populate and get a dictionary:

credentials = get_credentials()

获取Nova凭证¶

该部分的示例使用了``get_nova_credentials`` 方法。

def get_nova_credentials():
    d = {}
    d['username'] = os.environ['OS_USERNAME']
    d['api_key'] = os.environ['OS_PASSWORD']
    d['auth_url'] = os.environ['OS_AUTH_URL']
    d['project_id'] = os.environ['OS_TENANT_NAME']
    return d

This code resides in the credentials.py file, which all samples import.

使用``get_nova_credentials()``方法生成字典。

nova_credentials = get_nova_credentials()

输出值¶

该部分的示例使用`print_values`` 和 print_values_server:

def print_values(val, type):
    if type == 'ports':
        val_list = val['ports']
    if type == 'networks':
        val_list = val['networks']
    if type == 'routers':
        val_list = val['routers']
    for p in val_list:
        for k, v in p.items():
            print("%s : %s" % (k, v))
        print('\n')


def print_values_server(val, server_id, type):
    if type == 'ports':
        val_list = val['ports']

    if type == 'networks':
        val_list = val['networks']
    for p in val_list:
        bool = False
        for k, v in p.items():
            if k == 'device_id' and v == server_id:
                bool = True
        if bool:
            for k, v in p.items():
                print("%s : %s" % (k, v))
            print('\n')

示例引用的代码位于``utils.py`` .

创建网络¶

以下程序创建一个网络。

#!/usr/bin/env python
from neutronclient.v2_0 import client
from credentials import get_credentials

network_name = 'sample_network'
credentials = get_credentials()
neutron = client.Client(**credentials)
try:
    body_sample = {'network': {'name': network_name,
                   'admin_state_up': True}}

    netw = neutron.create_network(body=body_sample)
    net_dict = netw['network']
    network_id = net_dict['id']
    print('Network %s created' % network_id)

    body_create_subnet = {'subnets': [{'cidr': '192.168.199.0/24',
                          'ip_version': 4, 'network_id': network_id}]}

    subnet = neutron.create_subnet(body=body_create_subnet)
    print('Created subnet %s' % subnet)
finally:
    print("Execution completed")

列出网络。¶

以下程序列出网络。

#!/usr/bin/env python
from neutronclient.v2_0 import client
from credentials import get_credentials
from utils import print_values

credentials = get_credentials()
neutron = client.Client(**credentials)
netw = neutron.list_networks()

print_values(netw, 'networks')

关于 print_values, 参考 Print values.

创建端口¶

以下程序创建端口。

#!/usr/bin/env python
from neutronclient.v2_0 import client
import novaclient.v2.client as nvclient
from credentials import get_credentials
from credentials import get_nova_credentials

credentials = get_nova_credentials()
nova_client = nvclient.Client(**credentials)

# Replace with server_id and network_id from your environment

server_id = '9a52795a-a70d-49a8-a5d0-5b38d78bd12d'
network_id = 'ce5d204a-93f5-43ef-bd89-3ab99ad09a9a'
server_detail = nova_client.servers.get(server_id)
print(server_detail.id)

if server_detail != None:
    credentials = get_credentials()
    neutron = client.Client(**credentials)

    body_value = {
                     "port": {
                             "admin_state_up": True,
                             "device_id": server_id,
                             "name": "port1",
                             "network_id": network_id
                      }
                 }
    response = neutron.create_port(body=body_value)
    print(response)

关于``get_nova_credentials``, 请参考:ref:Get Nova credentials <get-nova-credentials>.

关于``get_credentials``, 请参考:ref:Get credentials <get-credentials>.

列出端口¶

以下程序列出端口：

#!/usr/bin/env python
from neutronclient.v2_0 import client
from credentials import get_credentials
from utils import print_values

credentials = get_credentials()
neutron = client.Client(**credentials)
ports = neutron.list_ports()
print_values(ports, 'ports')

关于``get_credentials`` 请参考 Get credentials.

关于 print_values, 参考 Print values.

列出主机端口¶

以下程序列出主机的端口：

#!/usr/bin/env python
from neutronclient.v2_0 import client
import novaclient.v2.client as nvclient
from credentials import get_credentials
from credentials import get_nova_credentials
from utils import print_values_server

credentials = get_nova_credentials()
nova_client = nvclient.Client(**credentials)

# change these values according to your environment

server_id = '9a52795a-a70d-49a8-a5d0-5b38d78bd12d'
network_id = 'ce5d204a-93f5-43ef-bd89-3ab99ad09a9a'
server_detail = nova_client.servers.get(server_id)
print(server_detail.id)

if server_detail is not None:
    credentials = get_credentials()
    neutron = client.Client(**credentials)
    ports = neutron.list_ports()

    print_values_server(ports, server_id, 'ports')
    body_value = {'port': {
        'admin_state_up': True,
        'device_id': server_id,
        'name': 'port1',
        'network_id': network_id,
        }}

    response = neutron.create_port(body=body_value)
    print(response)

创建路由器并添加端口到子网¶

示例程序通过OpenStack Networking创建路由器并添加端口到子网。

Import the following modules:

from neutronclient.v2_0 import client
import novaclient.v2.client as nvclient
from credentials import get_credentials
from credentials import get_nova_credentials
from utils import print_values_server

获取Nova凭证。请参考:ref:’Get Nova credentials <get-nova-credentials>’.
Instantiate the nova_client client object by using the credentials dictionary object:
```
nova_client = nvclient.Client(**credentials)
```

创建路由器并添加端口到子网

# Replace with network_id from your environment

network_id = '81bf592a-9e3f-4f84-a839-ae87df188dc1'

credentials = get_credentials()
neutron = client.Client(**credentials)
neutron.format = json
request = {'router': {'name': 'router name',
                      'admin_state_up': True}}

router = neutron.create_router(request)
router_id = router['router']['id']
# for example: '72cf1682-60a8-4890-b0ed-6bad7d9f5466'
router = neutron.show_router(router_id)
print(router)
body_value = {'port': {
    'admin_state_up': True,
    'device_id': router_id,
    'name': 'port1',
    'network_id': network_id,
    }}

response = neutron.create_port(body=body_value)
print(response)
print("Execution Completed")

创建路由器：完整的代码示例¶

#!/usr/bin/env python
from neutronclient.v2_0 import client
import novaclient.v2.client as nvclient
from credentials import get_credentials
from credentials import get_nova_credentials
from utils import print_values_server

credentials = get_nova_credentials()
nova_client = nvclient.Client(**credentials)

# Replace with network_id from your environment

network_id = '81bf592a-9e3f-4f84-a839-ae87df188dc1'
try:
    credentials = get_credentials()
    neutron = client.Client(**credentials)
    neutron.format = 'json'
    request = {'router': {'name': 'router name',
                          'admin_state_up': True}}
    router = neutron.create_router(request)
    router_id = router['router']['id']
    # for example: '72cf1682-60a8-4890-b0ed-6bad7d9f5466'
    router = neutron.show_router(router_id)
    print(router)
    body_value = {'port': {
        'admin_state_up': True,
        'device_id': router_id,
        'name': 'port1',
        'network_id': network_id,
        }}

    response = neutron.create_port(body=body_value)
    print(response)
finally:
    print("Execution completed")

删除一个网络¶

这个例子通过查询 OpenStack Networking 删除一个网络.

删除一个网络

Import the following modules:

from neutronclient.v2_0 import client
from credentials import get_credentials

Get credentials. See Get Nova credentials.
使用``credentials``字典对象实例化``neutron``客户端对象。
```
neutron = client.Client(**credentials)
```

删除网络。

body_sample = {'network': {'name': network_name,
               'admin_state_up': True}}

netw = neutron.create_network(body=body_sample)
net_dict = netw['network']
network_id = net_dict['id']
print('Network %s created' % network_id)

body_create_subnet = {'subnets': [{'cidr': '192.168.199.0/24',
                      'ip_version': 4, 'network_id': network_id}]}

subnet = neutron.create_subnet(body=body_create_subnet)
print('Created subnet %s' % subnet)

neutron.delete_network(network_id)
print('Deleted Network %s' % network_id)

print("Execution completed")

删除网络：完整的代码示例¶

#!/usr/bin/env python
from neutronclient.v2_0 import client
from credentials import get_credentials

network_name = 'temp_network'
credentials = get_credentials()
neutron = client.Client(**credentials)
try:
    body_sample = {'network': {'name': network_name,
                   'admin_state_up': True}}

    netw = neutron.create_network(body=body_sample)
    net_dict = netw['network']
    network_id = net_dict['id']
    print('Network %s created' % network_id)

    body_create_subnet = {'subnets': [{'cidr': '192.168.199.0/24',
                          'ip_version': 4, 'network_id': network_id}]}

    subnet = neutron.create_subnet(body=body_create_subnet)
    print('Created subnet %s' % subnet)

    neutron.delete_network(network_id)
    print('Deleted Network %s' % network_id)
finally:
    print("Execution Completed")

查看路由器¶

该例查询OpenStack Networking列出所有路由器。

Import the following modules:

from neutronclient.v2_0 import client
from credentials import get_credentials
from utils import print_values

Get credentials. See Get Nova credentials.
使用``credentials``字典对象实例化``neutron``客户端对象。
```
neutron = client.Client(**credentials)
```

列出路由器：

routers_list = neutron.list_routers(retrieve_all=True)
print_values(routers_list, 'routers')
print("Execution completed")

关于 print_values, 参考 Print values.

列出路由器：完整的代码示例¶

#!/usr/bin/env python
from neutronclient.v2_0 import client
from credentials import get_credentials
from utils import print_values

try:
    credentials = get_credentials()
    neutron = client.Client(**credentials)
    routers_list = neutron.list_routers(retrieve_all=True)
    print_values(routers_list, 'routers')
finally:
    print("Execution completed")

列出安全组¶

该例查询OpenStack Networking列出所有路由器。

Import the following modules:

from neutronclient.v2_0 import client
from credentials import get_credentials
from utils import print_values

获取凭证。参考:ref:Get credentials <get-credentials>.
使用``credentials``字典对象实例化``neutron``客户端对象。
```
neutron = client.Client(**credentials)
```

列出安全组

sg = neutron.list_security_groups()
print(sg)

列出安全组：完整的代码示例¶

#!/usr/bin/env python
from neutronclient.v2_0 import client
from credentials import get_credentials
from utils import print_values

credentials = get_credentials()
neutron = client.Client(**credentials)
sg = neutron.list_security_groups()
print(sg)

注解

OpenStack Networking安全组区分字母大小写，而nova-network安全组不区分。

列出子网¶

该例查询OpenStack Networking列出所有子网。

Import the following modules:

from neutronclient.v2_0 import client
from credentials import get_credentials
from utils import print_values

获取凭证。参考:ref:Get credentials <get-credentials>.
使用``credentials``字典对象实例化``neutron``客户端对象。
```
neutron = client.Client(**credentials)
```

列出子网

subnets = neutron.list_subnets()
print(subnets)

列出子网：完整的代码示例¶

#!/usr/bin/env python
from neutronclient.v2_0 import client
from credentials import get_credentials
from utils import print_values

credentials = get_credentials()
neutron = client.Client(**credentials)
subnets = neutron.list_subnets()
print(subnets)

updated: 2017-07-18 08:53

Except where otherwise noted, this document is licensed under Creative Commons Attribution 3.0 License. See all OpenStack Legal Documents.

网络

Contents

网络¶

设置环境变量值¶

获取凭证¶

获取Nova凭证¶

输出值¶

创建网络¶

列出网络。¶

创建端口¶

列出端口¶

列出主机端口¶

创建路由器并添加端口到子网¶

创建路由器：完整的代码示例¶

删除一个网络¶

删除网络：完整的代码示例¶

查看路由器¶

列出路由器：完整的代码示例¶

列出安全组¶

列出安全组：完整的代码示例¶

列出子网¶

列出子网：完整的代码示例¶

Project home page