我想了解为什么我的服务器无法连接到元数据服务器（因此无法使用SSH密钥login）。
网上类似的问题似乎是由安全组问题引起的，我相信这里不是问题。
它是一个单一的主机，IP为192.168.160.100 。 客人被给予一个固定的IP为10.225.134.63 。 networking有一个10.225.134.64的中子DHCP服务器。
在主机上，我运行了以下命令，
# curl http://192.168.160.100:8775 1.0 ... 2008-09-01 2009-04-04 # curl http://169.254.169.254 curl: (7) Failed connect to 169.254.169.254:80; No route to host
/etc/neutron/metadata_agent.ini
nova_metadata_ip = 192.168.160.100
/etc/nova/nova.conf
metadata_host=192.168.160.100
启动日志
cloud-init[827]: Cloud-init v. 0.7.5 running 'init' at Fri, 29 Sep 2017 09:50:08 +0000. Up 6.40 seconds. cloud-init[827]: ci-info: +++++++++++++++++++++++++++Net device info+++++++++++++++++++++++++++ cloud-init[827]: ci-info: +--------+------+---------------+---------------+-------------------+ cloud-init[827]: ci-info: | Device | Up | Address | Mask | Hw-Address | cloud-init[827]: ci-info: +--------+------+---------------+---------------+-------------------+ cloud-init[827]: ci-info: | lo: | True | 127.0.0.1 | 255.0.0.0 | . | cloud-init[827]: ci-info: | eth0: | True | 10.225.134.63 | 255.255.240.0 | fa:16:3e:0b:36:43 | cloud-init[827]: ci-info: +--------+------+---------------+---------------+-------------------+ cloud-init[827]: ci-info: ++++++++++++++++++++++++++++++++Route info+++++++++++++++++++++++++++++++++ cloud-init[827]: ci-info: +-------+--------------+--------------+---------------+-----------+-------+ cloud-init[827]: ci-info: | Route | Destination | Gateway | Genmask | Interface | Flags | cloud-init[827]: ci-info: +-------+--------------+--------------+---------------+-----------+-------+ cloud-init[827]: ci-info: | 0 | 0.0.0.0 | 10.225.128.1 | 0.0.0.0 | eth0 | UG | cloud-init[827]: ci-info: | 1 | 10.225.128.0 | 0.0.0.0 | 255.255.240.0 | eth0 | U | cloud-init[827]: ci-info: +-------+--------------+--------------+---------------+-----------+-------+ cloud-init[827]: url_helper.py[WARNING]: Calling 'http://169.254.169.254/2009-04-04/meta-data/instance-id' failed [50/120s]: unexpected error ['NoneType' object has no attribute 'status_code'] cloud-init[827]: url_helper.py[WARNING]: Calling 'http://169.254.169.254/2009-04-04/meta-data/instance-id' failed [101/120s]: unexpected error ['NoneType' object has no attribute 'status_code'] cloud-init[827]: url_helper.py[WARNING]: Calling 'http://169.254.169.254/2009-04-04/meta-data/instance-id' failed [119/120s]: unexpected error ['NoneType' object has no attribute 'status_code'] cloud-init[827]: DataSourceEc2.py[CRITICAL]: Giving up on md from ['http://169.254.169.254/2009-04-04/meta-data/instance-id'] after 120 seconds cloud-init[827]: url_helper.py[WARNING]: Calling 'http://10.225.134.64//latest/meta-data/instance-id' failed [0/120s]: unexpected error ['NoneType' object has no attribute 'status_code'] cloud-init[827]: url_helper.py[WARNING]: Calling 'http://10.225.134.64//latest/meta-data/instance-id' failed [1/120s]: unexpected error ['NoneType' object has no attribute 'status_code'] cloud-init[827]: url_helper.py[WARNING]: Calling 'http://10.225.134.64//latest/meta-data/instance-id' failed [2/120s]: unexpected error ['NoneType' object has no attribute 'status_code'] ... cloud-init[827]: url_helper.py[WARNING]: Calling 'http://10.225.134.64//latest/meta-data/instance-id' failed [119/120s]: unexpected error ['NoneType' object has no attribute 'status_code'] cloud-init[827]: DataSourceCloudStack.py[CRITICAL]: Giving up on waiting for the metadata from ['http://10.225.134.64//latest/meta-data/instance-id'] after 126 seconds
事实certificate，pipe理networking命名空间中缺less一些路由。 他们使用以下命令添加。
# Where, # Management network ID = qdhcp-88d57d45-e9y4-4b4c-ae8a-4d5d6654e7fa # Management network device = tap54ff6yfd-fb # from `sudo ip netns exec qdhcp-88d57d45-e9y4-4b4c-ae8a-4d5d6654e7fa ip addr` sudo ip netns exec qdhcp-88d57d45-e9y4-4b4c-ae8a-4d5d6654e7fa ip route add 169.254.0.0/16 dev tap54ff6yfd-fb proto kernel scope link src 169.254.169.254 sudo ip netns exec qdhcp-88d57d45-e9y4-4b4c-ae8a-4d5d6654e7fa ip addr add 169.254.169.254/16 brd 169.254.255.255 scope global dev tap54ff6yfd-fb