[Openstack] External network Issues

Dhvanan Shah dhvanan at gmail.com
Tue Aug 4 13:45:54 UTC 2015


Hi,

I have deployed Kilo using Packstack on CentOS , but I am having troubles
accessing the VM's that I spawn , through the public IP's that they are
assigned to them.

I created my network as follows:

CREATE NETWORK FOR OPENSTACK

   1.

   a. neutron router-gateway-clear router1 (neutron router-gateway-list)
   b. neutron subnet-delete public_subnet
   c. neutron net-delete public
   d. neutron router-interface-delete router1 private_subnet
   e. neutron subnet-delete private_subnet
   f. neutron net-delete private
   g. neutron router-delete router1
   2.

   a. neutron router-create router1
   b. neutron net-create private
   c. neutron subnet-create --name private_subnet private 192.168.0.0/16
   --allocation-pool start=192.168.0.0,end=192.168.255.250
   d. neutron router-interface-add router1 private_subnet
   3.

   a. neutron net-create public --router:external=True    //(neutron
   net-create public --router:external)
   b. neutron subnet-create public 10.16.37.0/24 <set for your n/w> --name
   public_subnet --enable_dhcp=False --allocation-pool
   start=10.16.37.230,end=10.16.37.250 <make sure that it will not conflict
   with other IP address> --gateway=10.16.37.1 <your n/w gateway>
   c. neutron router-gateway-set router1 public


Also I made changes in the ifcfg-br-ex file and ifcfg-<my network> file in
/etc/sysconfig/network-scripts.

The Changes were as follows:

ifcfg-br-ex
DEVICE=br-ex
BOOTPROTO=static
IPADDR=<your workstation IP address> e.g 10.16.37.221
NETMASK=255.255.255.0
DNS1=<your n/w DNS1> e.g 10.16.25.13
DNS2=<your n/w DNS2> e.g 10.16.25.15
BROADCAST=10.16.37.255
GATEWAY=10.16.37.1
NM_CONTROLLED="no"
DEFROUTE=yes
IPV4_FAILURE_FATAL="yes"
IPV6INIT=no
ONBOOT=yes
TYPE=OVSIntPort
OVS_BRIDGE=br-ex
DEVICETYPE=ovs

*ifcfg-p2p1*

DEVICE=p2p1 <change with your device name>

# HWADDR=00:22:15:63:E4:E2

ONBOOT="yes"

TYPE="OVSPort"

DEVICETYPE="ovs"

OVS_BRIDGE=br-ex

NM_CONTROLLED=no

IPV6INIT=no


There is also a proxy in the network and so for that, I installed by "packstack
--allinone --*provision-demo=n --provision-all-in-one-ovs-bridge=n*".

Could someone suggest me a reason as to why i might be facing issues or
probably where I can look to debug this issue.

Thanks,
Dhvanan Shah
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