create_network（）：无法分配网关（x.x.x.x）：已在测试用例中使用的地址

Question

我尝试运行我的test_container_services.py套件，但遇到了这个问题：

docker.errors.APIError：500服务器错误：内部服务器错误（“b'{”message“：”无法分配网关（10.49.0.201）：地址已在使用“}'”）

我试图删除所有正在运行的容器和相关网络，但仍然遇到了问题。

Env

核心

$ uname
Linux x1 4.8.0-36-generic #36~16.04.1-Ubuntu SMP Sun Feb 5 09:39:57 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux

搬运工人

$ docker --version 
Docker version 1.13.1, build 092cba3

SDK

docker-py==1.10.6

Docker env

在运行测试之前，我处于这种状态：

$ docker network ls
NETWORK ID          NAME                DRIVER              SCOPE
a4beb5d4de56        bridge              bridge              local
8a1012b67f1a        host                host                local
ed2452ee5e44        none                null                local

没有集装箱运行$ docker ps -a CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES

Test

def test_get_network_config(self):
    number_networks = len(self.docker_api.networks())
    network_config = container_services.get_network_config(
        data={
            'ip': '10.49.0.1',
            'subnet': '10.49.0.0/16',
            'gateway': '10.49.0.201',
            'vlan': 101
        },
        docker_client=self.docker_api
    )
    network_id = list(network_config.get('EndpointsConfig').keys())[0]

    self.assertEqual(number_networks + 1, len(self.docker_api.networks()))
    self.docker_api.remove_network(network_id)

Code

def get_network_config(data, docker_client):
    network = create_network(data, docker_client)
    network_name = docker_client.inspect_network(network.get('Id')).get('Name')
    network_info = dict()
    network_info[network_name] = docker_client.create_endpoint_config(ipv4_address=data.get('ip'))
    networking_config = docker_client.create_networking_config(network_info)
    return networking_config

Error

ERROR: test_get_network_config (backend.api.tests.test_container_services.ContainersTestCase)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/data/projects/coaxis-opt/env/lib/python3.5/site-packages/docker/client.py", line 170, in _raise_for_status
    response.raise_for_status()
  File "/data/projects/coaxis-opt/env/lib/python3.5/site-packages/requests/models.py", line 909, in raise_for_status
    raise HTTPError(http_error_msg, response=self)
requests.exceptions.HTTPError: 500 Server Error: Internal Server Error for url: http+docker://localunixsocket/v1.24/networks/create

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/data/projects/coaxis-opt/backend/api/tests/test_container_services.py", line 93, in test_get_network_config
    docker_client=self.docker_api
  File "/data/projects/coaxis-opt/backend/api/container_services.py", line 31, in get_network_config
    network = create_network(data, docker_client)
  File "/data/projects/coaxis-opt/backend/api/container_services.py", line 65, in create_network
    options={"parent": get_default_interface(data)})
  File "/data/projects/coaxis-opt/env/lib/python3.5/site-packages/docker/utils/decorators.py", line 35, in wrapper
    return f(self, *args, **kwargs)
  File "/data/projects/coaxis-opt/env/lib/python3.5/site-packages/docker/api/network.py", line 62, in create_network
    return self._result(res, json=True)
  File "/data/projects/coaxis-opt/env/lib/python3.5/site-packages/docker/client.py", line 178, in _result
    self._raise_for_status(response)
  File "/data/projects/coaxis-opt/env/lib/python3.5/site-packages/docker/client.py", line 174, in _raise_for_status
    raise errors.APIError(e, response, explanation=explanation)
docker.errors.APIError: 500 Server Error: Internal Server Error ("b'{"message":"failed to allocate gateway (10.49.0.201): Address already in use"}'")

相关：https://github.com/docker/docker-py/issues/1474

Answer 1

我正在使用相同的配置编写一个新测试，但忘记了在完成时销毁容器因此错误...

Answer 2

我发生了同样的错误。问题是不同服务器的docker版本。作为示例Ex：

• server_1：docker版本1.13.11
• server_2：docker version 18.03.1-ce

所以我将所有服务器更新到18.03.1-ce的相同版本，现在它工作正常。

Answer 3

下一个命令对我有用：

docker network prune

删除所有未使用的网络未使用的网络是那些未被任何容器引用的网络。 Documentation: docker network prune