[Rdo-list] RDO + floating IPs

[Tomas Sedovic]

Hey everyone,

I tried to get RDO set up with floating IP addresses, but I'm running 
into problems I'm not sure how to debug (not that familiar with 
networking and Neutron).

I followed these guides on a clean Fedora 21 x86_64 server:

https://www.rdoproject.org/Quickstart
https://www.rdoproject.org/Floating_IP_range

This on a baremetal box in a network outside of my control but in which 
there are 5 extra IP addresses assigned to me. It's quite possible that 
I'm missing something or doing something wrong, so here's exactly what I 
did:

yum update -y && reboot
---
systemctl disable NetworkManager
systemctl enable network
systemctl stop NetworkManager && ifdown enp0s25 && systemctl start network

yum install -y https://rdo.fedorapeople.org/rdo-release.rpm
yum install -y openstack-packstack
yum-config-manager --disable openstack-kilo
yum-config-manager --enable openstack-kilo-testing
setenforce 0

packstack --allinone --provision-all-in-one-ovs-bridge=n 
--os-heat-install=y --os-ceilometer-install=y

That succeeded, so I added a keypair and made sure the "default" 
security group allows all traffic.

So next onto the neutron stuff:

source /root/keystonerc_admin
neutron net-create mynetwork --router:external

(got a new network with type vxlan and id 
4a30e2cc-b9f3-4ebd-b7ab-c35e38c3c75c)

For the subnet I need the CIDR, gateway and the floating IP range. I'm 
not sure if I'm getting these right:

* CIDR: `ip addr`, find my network interface (enp0s25), get it's inet 
value: 10.40.128.44/20
* Gateway: `ip route | grep default`  -> default via 10.40.143.254 dev 
enp0s25
* And these 5 IP addresses are assigned to me: 10.40.128.80-10.40.128.84

neutron subnet-create mynetwork 10.40.128.44/20 --name mysubnet 
--enable_dhcp=False --allocation_pool 
start=10.40.128.80,end=10.40.128.84 --gateway 10.40.143.254

(this creates a subnet with id 2e3d6966-a659-454c-8c38-d98ed3f105e5)

neutron router-create myrouter

(this creates a router with id fced82e6-9917-4053-a286-02838d0325fc)

neutron router-gateway-set fced82e6-9917-4053-a286-02838d0325fc 
4a30e2cc-b9f3-4ebd-b7ab-c35e38c3c75c

(myrouter id and mynetwork id)

neutron floatingip-create mynetwork


With all that out of the way, I created another network+subnet for my 
VMs and added a myrouter's interface to it. Then I launched a cirros VM 
into that network and associated a floating IP from "mynetwork".

The VM had some trouble with cloud-init:

Starting network...
udhcpc (v1.20.1) started
Sending discover...
Sending select for 192.168.0.4...
Lease of 192.168.0.4 obtained, lease time 86400
cirros-ds 'net' up at 0.66
checking http://169.254.169.254/2009-04-04/instance-id
failed 1/20: up 0.66. request failed
failed 2/20: up 5.67. request failed
failed 3/20: up 8.67. request failed
failed 4/20: up 11.67. request failed
...

once all 20 requests failed, it got to a login screen, but I could not 
ping or SSH into it:

# ping 10.40.128.81
PING 10.40.128.81 (10.40.128.81) 56(84) bytes of data.
 From 10.40.128.44 icmp_seq=1 Destination Host Unreachable
 From 10.40.128.44 icmp_seq=2 Destination Host Unreachable
 From 10.40.128.44 icmp_seq=3 Destination Host Unreachable
 From 10.40.128.44 icmp_seq=4 Destination Host Unreachable

# ssh cirros at 10.40.128.81
ssh: connect to host 10.40.128.81 port 22: No route to host


Does anyone have any idea what I may be doing wrong?

Thanks,
Tomas