Networking in OpenStack

asked 2014-02-10 04:25:36 -0600

titizebioutifoul gravatar image

updated 2014-02-10 08:08:16 -0600

Hi!

I am having some trouble to understand the network-create command, and the overall networking configuration in OpenStack. Here is my situation:

I have one controller with one physical interface (eth0). It has a public IP address.

I have two compute nodes with one physical interface (eth0). They also have a public IP address.

I followed the http://docs.openstack.org/havana/install-guide/install/apt/content/ (documentation). What I would like is to have a private network with these range of IP for each VMs: 10.0.5.0/24. I would like the controller to have the IP 10.0.5.1. I did all the configuration especially the one http://docs.openstack.org/havana/install-guide/install/apt/content/nova-network.html (here). Everything is working fine except that the IP address 10.0.5.1 is assigned to one of the compute node. I do not really understand why this one and not the controller. Can anybody help me?

I think that I do not understand something in the documentation. Why does the Basic Networking ( http://docs.openstack.org/havana/install-guide/install/apt/content/basics-networking.html (http://docs.openstack.org/havana/inst...) ) mentions that the external IP is 10.0.0.10 for the controller and then in the compute services ( http://docs.openstack.org/havana/install-guide/install/apt/content/nova-network.html (http://docs.openstack.org/havana/inst...) ), we create a 10.0.0.0/24 network...

My objective in the end is to run a DNS server on the controller in order to have the matching between the hostname of the VM and its IP address.

PS: I am using ubuntu 12.04 with openstack Havana

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