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2017-05-08 13:29:52 -0500 answered a question Message No valid host was found. There are not enough hosts available. Code 500

If you have enough resources on your compute node, and if neutrin is configured properly, then the reason fir this message is due to some fault in the cobtroller-compute communication. Check the nova logs for this.

2017-05-08 13:16:07 -0500 asked a question Which network does openstack use to transfer data during live migration?

Hi. I am doing some reasearch in live migration within cloud environments. I have set up Openstack Mitaka on Ubuntu 14.04 LTS servers. The setup uses two nics each on the servers ( one all in one node and one compute node), one for management network, and the other for provider network (tunnel network and vlans are trunked through my provider network interface). My doubt is that when i live migrate an instance from one host to another, which path does the vm data teavel by? Is it through the management network, or through the provider network? Thanks.

2017-05-08 13:09:51 -0500 commented question How to set up provider network?

Thanks for the reply. My issue has been solved. You are correct. The dhclient does not work properly because thr bridge has already been assigned an ip address using ifconfig.

2017-05-08 13:08:30 -0500 answered a question How to set up provider network?

Problem solved. I followed these commands to forward my eth1 address to my br-eth1 address:

#ifconfig eth1 0
#ifconfig br-eth1 172.16.xx.xx netmask up

Of course, the changes can be made to the /etc/network/interfaces file to have br-eth1 and eth1 configured.

2017-05-08 02:50:23 -0500 asked a question How to set up provider network?

Hi, I have been trying to set up provider network for Openstack on my all-in-one node. The interface on the server that I am using for this purpose is eth1, which is connected to my provider network (172.16.xx.0/24). After I create the bridge br-eth1, I added eth1 to br-eth1, I lost internet connectivity. This is upsetting as my instances need to access the outside world using the provider network. I follow these commands to create the bridge and add eth1 to it:

ovs-vsctl add-br br-eth1
ovs-vsctl add-port br-eth1 eth1
ifconfig br-eth1 172.16.xx.xx up
ip link set br-eth1 promisc on
ifconfig eth1 0
dhclient br-eth1

As you can see, I have forwarded eth1's ip address (172.16.xx.xx) to br-eth1. However, I still can't get internet connectivity. Please help.

2017-04-24 05:28:43 -0500 commented question How to set up networking for Openstack?

I can ping the router from inside the instance, but can't ping beyond the router. I can also ping the interface of the router on the external network, but can't ping anything else in my external network.

2017-04-24 05:26:27 -0500 commented question How to set up networking for Openstack?

Yes, the agent is mapped to the physical network the same way. I have enabled dhcp in my 172.16.xx.0/24 subnet. I have disabled dhcp for the 192.168.xx.0/24 network. The allocation pool for the floating ip is from 192.168.xx.150 to 192.168.xx.200

2017-04-24 05:22:54 -0500 commented question How to set up networking for Openstack?

I can ping the instance's floating ip address from the controller by using the qrouter namespace.

#ip netns exec qrouter-router id ping floating-ip address

The Neutron router has the network 192.168.xx.0/24 set as the external network and it has an interface on the 172.16.xx.0/24 network.

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2017-04-22 07:17:02 -0500 commented question How to set up networking for Openstack?

core plugin is ML2. mechanism drivers are linuxbridge,l2population linuxbridge agent is used to map the physical and the virtual networks. instance is connected to the provider network via a router that links 172.16.xx.0/24 and 192.168.xx.0/24 instance floating ip 192.168.xx.111

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2017-04-22 04:25:27 -0500 asked a question How to set up networking for Openstack?

I am trying to set up Openstack with the following networking setup: Controller node: 2 interfaces eth0 : 10.1.xx.xx eth1: 198.162.xx.xx

Compute node: 2 interfaces eth0: 10.1.xx.xx eth1: 198.162.xx.xx

The networks 10.1.xx.0/24 and 192.168.xx.0/24 are connected via a VyOS router with NAT operation on.

I have set 192.168.xx.0/24 as my provider network, and 10.1.xx.0/24 as my management network. Both have internet access. Inside Openstack, I am using 192.168.xx.0/24 as my external network and 172.16.xx.0/24 as my internal network. I can ping the openstack instance from my controller, but I can't access the internet from the instance. Please help.

2017-04-16 06:54:28 -0500 asked a question How to configure Openstack Mitaka to use post-copy for live migrations?

Hi, I intend to carry out live migrations in my Openstack cloud using the post-copy algorithm. I am using the Mitaka release of Openstack on Ubuntu 14.04 LTS. Please help me by teling how can I configure Openstack to shift to post-copy algorithm from the default pre-copy to carry out live migrations. Thanks

2017-04-05 13:35:43 -0500 asked a question How to use OpenStack Mitaka with Multipath TCP?

Hi, I have deployed an Openstack cloud on Ubuntu 14.04 with four nodes - one controller, two computes and a cinder node. I wish to use MPTCP to connect my two compute nodes. I would like to know how to define multiple management interfaces and ip addresses to connect my compute nodes. Thanks

2017-04-05 13:35:42 -0500 asked a question How do i configure OpenStack Mitaka to work with MultiPath TCP?

Hi, I am trying to work with OpenStack Mitaka with a Multipath TCP configuration. This means that I intend to add multiple management interfaces (two actually) at my compute nodes. I have two compute nodes, a controller node, and a block storage node configures with OpenStack Mitaka over Ubuntu 14.04 LTS. I need a way in which OpenStack identifies two ip addresses as the management ip addresses of my compute nodes. Thanks.