Hi,

I tried upgrading Openstack release from KIlo version to Liberty virsion in my test environment (VirtualBox). The setup is all-in-one without any HA configured.

I followed the below steps during the upgrading process:

1) Removed the repository for the previous release packages (Removed Kilo Repo)
2) Changed the repository for the new release packages (Changed to Liberty Repo)
3) Backed up all the mysql DB and Kilo configuration file.
4) Ran "apt-get dist-upgrade" to upgrade all the package.
5) Configured all the new configuration files for Liberty version.
6) Ran " DB sync for all the OpenStack service" which has modified the DB tables for Liberty release with existing data.
7) Restarted all the services. All seems working fine. 
8) Launched the new VM / started the existing VM using the horizon dashboard which turned Active state and running.

Now, the problem is my both the VM is not getting the IP address from DHCP agent :-(

I configured my kilo release using OpenVswitch agent in ml2_conf.ini file. So after upgrading also I used the same agent even though the Liberty document used Linux-bridge-agent in ml2_conf.ini. Is there any chance that this could be the reason?

Kindly, Assist me with some suggestions.

Thanks in Advance.

Vinoth