最小的devstack有nova和漂浮的ips

Question

我正在尝试建立一个可以启动nova实例的最小devstack,一些将具有公共地址,一些将需要打开到公共网络的连接.我希望能够为实例分配浮动ips,并使来自具有公共地址的实例的流量到达公共网络.

解决

Devstack将在一个带有两个物理接口的Ubuntu 14.04盒子上运行.第一个接口eth0是在10.48.4.0/22,我拥有地址10.48.6.232; 这是与盒子的管理连接.第二个接口eth1是10.48.8.0/22,拥有地址10.48.11.6和10.48.11.57-10.48.11.59.eth1配置为使用10.48.11.6地址,为浮动范围留下一小段地址.

auto eth1
iface eth1 inet static
    address 10.48.11.6
    netmask 255.255.252.0

我想使用范围10.48.11.57-10.48.11.59作为浮动IP池.这构成了我的开始local.conf

[[local|localrc]]

# Devstack host IP eth1 address
HOST_IP=10.48.11.6

# Private network
FIXED_RANGE=10.90.100.0/24
NETWORK_GATEWAY=10.90.100.1

# Public network
Q_FLOATING_ALLOCATION_POOL=start=10.48.11.57,end=10.48.11.59
FLOATING_RANGE=10.48.8.0/22
PUBLIC_NETWORK_GATEWAY=10.48.8.1

# Public network is eth1
PUBLIC_INTERFACE=eth1

ML2

我的相关部分的其余部分local.conf是配置neutron和ovs以使用公共网络.我按照评论中的说明进行操作neutron-legacy.

# Neutron
# -------

PUBLIC_BRIDGE=br-ex

Q_USE_PROVIDERNET_FOR_PUBLIC=True
PUBLIC_PHYSICAL_NETWORK=public
OVS_BRIDGE_MAPPINGS=public:br-ex

# Neutron Provider Network
ENABLE_TENANT_TUNNELS=True
PHYSICAL_NETWORK=public
OVS_PHYSICAL_BRIDGE=br-ex

# Use ml2 and openvswitch
Q_PLUGIN=ml2
Q_ML2_PLUGIN_MECHANISM_DRIVERS=openvswitch,logger
Q_AGENT=openvswitch
enable_service q-agt

# ml2 vxlan
Q_ML2_TENANT_NETWORK_TYPE=vxlan
Q_ML2_PLUGIN_VXLAN_TYPE_OPTIONS=(vni_ranges=1001:2000)
Q_AGENT_EXTRA_AGENT_OPTS=(tunnel_types=vxlan vxlan_udp_port=8472)
Q_USE_NAMESPACE=True
Q_USE_SECGROUP=True

产生的网络

我将演示项目的默认安全策略更改为允许.

生成的网络在devstack主机和私有子网之间路由流量,但不在devstack主机和10.48.8.0/22实例10.48.8.0/22之间以及物理10.48.8.0/22网络或物理网络与公有10.48.8.0/22子网之间路由.

      \ destination   gateway     devstack     router1       private
source \              10.48.8.1   10.48.11.6   10.48.11.57   10.90.100.0/24

physical              pings       X            X             na
10.48.8.0/22

devstack              X           pings        pings         pings
10.48.11.6

private               X           pings        pings         pings
10.90.100.0/24

离开public网络的流量应该到达物理网络.离开private网络的流量应该NAT到public网络上.从物理网络进入的流量应该到达public网络.

由此产生的ovs桥梁

$sudo ovs-vsctl show
33ab25b5-f5d9-4f9f-b30e-20452d099f2c
    Bridge br-ex
        Port phy-br-ex
            Interface phy-br-ex
                type: patch
                options: {peer=int-br-ex}
        Port "eth1"
            Interface "eth1"
        Port br-ex
            Interface br-ex
                type: internal
    Bridge br-int
        fail_mode: secure
        Port patch-tun
            Interface patch-tun
                type: patch
                options: {peer=patch-int}
        Port int-br-ex
            Interface int-br-ex
                type: patch
                options: {peer=phy-br-ex}
        Port "tapc5733ec7-e7"
            tag: 1
            Interface "tapc5733ec7-e7"
                type: internal
        Port "qvo280f2d3e-14"
            tag: 1
            Interface "qvo280f2d3e-14"
        Port br-int
            Interface br-int
                type: internal
        Port "qr-9a91aae3-7c"
            tag: 1
            Interface "qr-9a91aae3-7c"
                type: internal
        Port "qr-54611e0f-77"
            tag: 1
            Interface "qr-54611e0f-77"
                type: internal
        Port "qg-9a39ed65-f0"
            tag: 2
            Interface "qg-9a39ed65-f0"
                type: internal
    Bridge br-tun
        fail_mode: secure
        Port br-tun
            Interface br-tun
                type: internal
        Port patch-int
            Interface patch-int
                type: patch
                options: {peer=patch-tun}
    ovs_version: "2.0.2"

devstack框上的路由表是

$ip route
default via 10.48.4.1 dev eth0
10.48.4.0/22 dev eth0  proto kernel  scope link  src 10.48.6.232
10.48.8.0/22 dev br-ex  proto kernel  scope link  src 10.48.11.6
10.90.100.0/24 via 10.48.11.57 dev br-ex
192.168.122.0/24 dev virbr0  proto kernel  scope link  src 192.168.122.1

路由表router1是

$sudo ip netns exec qrouter-cf0137a4-49cc-45f9-bad8-5d71340b5462 ip route
default via 10.48.8.1 dev qg-9a39ed65-f0
10.48.8.0/22 dev qg-9a39ed65-f0  proto kernel  scope link  src 10.48.11.57
10.90.100.0/24 dev qr-9a91aae3-7c  proto kernel  scope link  src 10.90.100.1

怎么了？如何设置一个可以为nova实例托管公共和私有接口的简单devstack？