docker 创建网络 failed to allocate gateway (): No address returned 解决办法

Posted 2022-09-01 为何一再沦落

docker 容器创建网络时候遇到 failed to allocate gateway (): No address returned 错误。
Docker internal error: 500 Server Error for http+docker://localhost/v1.26/networks/create: Internal Server Error (“failed to allocate gateway (): No address returned”).

在openstack中创建网络之后，在创建子网的时候，如果不创建网关，虚拟机可以使用，但是容器在使用neutron创建的这个网络时候会报错，使用kuryr结合docker创建网络的时候，需要有网关。

提示错误如下：

2021-04-16 11:23:02.420 43223 ERROR zun.compute.manager [req-c0b4fca4-4865-4054-8108-791dddc237ea 89805c2a82ea4780a6335bb42fef17e5 74b67e24d3bf403d895025c63e0a31dc default - -] Error occurred while calling Docker create API: Docker internal error: 500 Server Error for http+docker://localhost/v1.26/networks/create: Internal Server Error (“failed to allocate gateway (): No address returned”).: zun.common.exception.DockerError: Docker internal error: 500 Server Error for http+docker://localhost/v1.26/networks/create: Internal Server Error (“failed to allocate gateway (): No address returned”).

2021-04-21 23:38:15.411 308243 DEBUG zun.network.kuryr_network [req-9d7cd349-c488-4d60-a2b5-d70d9577cf62 89805c2a82ea4780a6335bb42fef17e5 74b67e24d3bf403d895025c63e0a31dc default - -] Attempt (1) to create network: Network(created_at=<?>,id=<?>,name=‘3c3e041f-dd85-4602-9b03-ae3da6db254f’,network_id=<?>,neutron_net_id=3c3e041f-dd85-4602-9b03-ae3da6db254f,project_id=74b67e24d3bf403d895025c63e0a31dc,updated_at=<?>,user_id=‘89805c2a82ea4780a6335bb42fef17e5’,uuid=<?>) create_network /usr/local/lib/python3.6/site-packages/zun/network/kuryr_network.py:120
2021-04-21 23:38:15.418 308243 DEBUG zun.network.kuryr_network [req-9d7cd349-c488-4d60-a2b5-d70d9577cf62 89805c2a82ea4780a6335bb42fef17e5 74b67e24d3bf403d895025c63e0a31dc default - -] Calling docker.create_network to create network 3c3e041f-dd85-4602-9b03-ae3da6db254f, ipam_options ‘Driver’: ‘kuryr’, ‘Options’: ‘neutron.net.shared’: ‘False’, ‘neutron.subnet.uuid’: ‘d399795d-8969-4913-a4ad-1638737b1a8c’, ‘Config’: [‘Subnet’: ‘192.168.4.0/24’, ‘Gateway’: ‘192.168.4.1’], options ‘neutron.net.uuid’: ‘3c3e041f-dd85-4602-9b03-ae3da6db254f’, ‘neutron.net.shared’: ‘False’, ‘neutron.subnet.uuid’: ‘d399795d-8969-4913-a4ad-1638737b1a8c’ _create_network_attempt /usr/local/lib/python3.6/site-packages/zun/network/kuryr_network.py:168
2021-04-21 23:38:17.212 308243 DEBUG zun.network.kuryr_network [req-9d7cd349-c488-4d60-a2b5-d70d9577cf62 89805c2a82ea4780a6335bb42fef17e5 74b67e24d3bf403d895025c63e0a31dc default - -] Attempt (1) to create network: Network(created_at=<?>,id=<?>,name=‘0ba5db0f-2040-4979-ad74-8d187f1442c6’,network_id=<?>,neutron_net_id=0ba5db0f-2040-4979-ad74-8d187f1442c6,project_id=74b67e24d3bf403d895025c63e0a31dc,updated_at=<?>,user_id=‘89805c2a82ea4780a6335bb42fef17e5’,uuid=<?>) create_network /usr/local/lib/python3.6/site-packages/zun/network/kuryr_network.py:120
2021-04-21 23:38:17.217 308243 DEBUG zun.network.kuryr_network [req-9d7cd349-c488-4d60-a2b5-d70d9577cf62 89805c2a82ea4780a6335bb42fef17e5 74b67e24d3bf403d895025c63e0a31dc default - -] Calling docker.create_network to create network 0ba5db0f-2040-4979-ad74-8d187f1442c6, ipam_options ‘Driver’: ‘kuryr’, ‘Options’: ‘neutron.net.shared’: ‘False’, ‘neutron.subnet.uuid’: ‘6a89c673-5fb6-4b44-8b18-a2180b128bfc’, ‘Config’: [‘Subnet’: ‘172.21.0.0/16’, ‘Gateway’: None], options ‘neutron.net.uuid’: ‘0ba5db0f-2040-4979-ad74-8d187f1442c6’, ‘neutron.net.shared’: ‘False’, ‘neutron.subnet.uuid’: ‘6a89c673-5fb6-4b44-8b18-a2180b128bfc’ _create_network_attempt /usr/local/lib/python3.6/site-packages/zun/network/kuryr_network.py:168
2021-04-21 23:38:17.787 308243 ERROR zun.compute.manager [req-9d7cd349-c488-4d60-a2b5-d70d9577cf62 89805c2a82ea4780a6335bb42fef17e5 74b67e24d3bf403d895025c63e0a31dc default - -] Error occurred while calling Docker create API: Docker internal error: 500 Server Error for http+docker://localhost/v1.26/networks/create: Internal Server Error (“failed to allocate gateway (): No address returned”).: zun.common.exception.DockerError: Docker internal error: 500 Server Error for http+docker://localhost/v1.26/networks/create: Internal Server Error (“failed to allocate gateway (): No address returned”).

解决办法：

方法一、在neutron创建子网的时候，启用网关，给出网关ip地址；之后第一次创建容器后可以禁用网关，后续不会有影响。

方法二、修改组件源码后重新编译安装一次

解决办法：

cd /var/lib/zun/zun/
vim zun/network/kuryr_network.py 
# 对98行修改
# 将："Gateway": v4_subnet[gateway_ip]
# 修改为："Gateway": v4_subnet[gateway_ip] or "10.0.0.1"
python3 setup.py install
systemctl restart zun-compute.service 


cd /var/lib/kuryr/kuryr-libnetwork/
vim kuryr_libnetwork/controllers.py 
# 在819行添加以下内容：
# if not v4_gateway_ip:
#     v4_gateway_ip = "10.0.0.1"
python3 setup.py install
systemctl restart kuryr-libnetwork.service 

---

docker网络相关使用方法：

docker网桥删除了，进行恢复：

systemctl daemon-reload 
systemctl restart docker 
ifconfig

docker 网络创建：

docker network create --driver bridge --subnet 10.0.77.1/24 --gateway 10.0.77.1 docker0

docker网络删除：

ifconfig docker0 down &>/dev/null
brctl delbr docker0 &>/dev/null

网卡启动停止：

ifdown ifcfg-enp7s0 关闭网卡

ifup