Open Stack

How did you create the external network? When you create it you have to
provide the physical network that corresponds to the mapping to br-ex that
you have in bridge_mappings in /etc/neutron/plugins/ml2/ml2_conf.ini (or
wherever packstack sets up the config file for the plugin).

On Wed, Jun 28, 2017 at 12:34 PM, Reza Shaikhly <rezashaikhly at gmail.com>
wrote:

> Hello eyeryone,
>
>
>
> I'm kind of new with OpenStack.
>
>
>
> Three months ago I managed to deploy OpenStack using Packstack on three
> nodes. Three VMs with CentOS 7 minimal created using VM Ware ESXI
> hypervisor: a controller node, a network controller node (Neutron) and a
> compute node (Nova). Things worked all right there as a test bed for PoC
> and lunching a few instances. That was OpenStack Newton.
>
> Yesterday I followed the very same procedure and I ran into two problems:
> first problem was related to NTP, and I finally found a workaround for it.
> However the second problem I couldn't handle it so far and I hope to get
> some kind recommendations here. The problem is that it seems the traffic
> does not go off to the External network
>
>
>
> I create an external network and a Router on a project using Horizon and
> connect the external network to the gateway of the Router. Everything seems
> fine, but I can't ping the router's gateway from my own client which are on
> the same subnet. It seems that External Bridge does not route the traffic
> outside.
>
> I can't ping the router's gateway from Neutron server. With this big
> problem I can't go further, because instances won't be able to ping outside
> network, also they won't be reachable from outside.
>
> I checked the firewall on my client and even turned it off. Also I checked
> Neutron server's firewall status using: "systemctl status firewalld" and
> service seemed dead.
>
>
>
> Here is my eth0 and External bridge configurations on Neutron server:
>
>
>
> eth0:
>
> DEVICETTYPE=ovs
>
> TYPE=OVSPort
>
> OVS_BRIDGE=br-ex
>
> DEVICE=eth0
>
> NAME=eth0
>
> BOOTPROTO=none
>
> ONBOOT=yes
>
>
>
> External bridge:
>
> TYPE=OVSBridge
>
> DEVICE=br-ex
>
> NAME=br-ex
>
> BOOTPROTO=static
>
> DEVICETYPE=ovs
>
> ONBOOT=yes
>
> IPADDR=172.16.10.123
>
> NETMASK=255.255.255.0
>
> GATEWAY=172.16.10.1
>
> DNS1=8.8.8.8
>
> PEERDNS=yes
>
> USERCTL=yes
>
>
>
>
>
> Even I lunched three instances using Cirros image and they able to ping
> each other, also able to ping the gateway of the router, However nothing
> seems reachable from outside.
>
>
>
> That's why I think there should be something wrong with External Bridge.
>
>
>
> Please Help, if you have any alternative config for external bridge and
> NIC card, or whatever useful to help my limit knowledge...
>
>
>
> Thank you
>
> Rez
>
>
>
> P.S: Is the NIC card type in VM has anything to do with this problem? I
> mean when I created the Virtual machines, I chose VMXNET3 as NIC card type,
> should I try another type, something like E1000, maybe for compatibility?
>
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>
>
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