
address allocated to this instance. Then the DHCP server will return the configured IP address (which will be
the externally visible IP address of this instance) instead of the IP address that the DHCP server can detect
from examining the interface that it is using for communications with clients (which is the fixed IP address).
A local cluster needs to be registered with a regional cluster. After this registration, the regional cluster needs
to be able to connect to the local cluster. When the local cluster initially registers with the regional cluster, it
sends its IP address to the regional cluster. If the regional cluster can contact the local cluster by using the IP
address that the local cluster sees is configured to its network interface, then no action need be taken. This
would be the case if the local cluster has a fixed IP address that is only visible within the OpenStack cloud,
but the regional cluster was also in the same cloud. If the regional cluster can ping the IP address that the local
cluster sees as the IP address on its network interface, then no additional steps are necessary. However, in the
event that the regional cluster is not local to the OpenStack cloud on which the local cluster is running, and
the local cluster has a floating address in addition to a fixed address, then the regional cluster's configuration
for the local cluster needs to have its IP address updated to be that of the floating address (and not the fixed
address, which is what it will have from the initial registration).
When allocating a local cluster, you should consider allocating 4 or even 8 VCPUs and at least 12 GB of
RAM, with more for large systems. Local clusters will absolutely need more than the 7+ GB free space
available in the minimal installation. Regional clusters will probably need additional disk space, but 2 to 4
VCPUs and 8 to 12GB of RAM will suffice for many installations.
Upgrading the Cisco Prime Network Registrar Virtual Appliance
This section describes the procedure for upgrading Cisco Prime Network Registrar to Cisco Prime Network
Registrar virtual appliance and upgrading the operating system to CentOS 7.3 using the data from an existing
virtual appliance.
Related Topics
Upgrading to a new Version of the Virtual Appliance Operating System , on page 48
Upgrading a Cisco Prime Network Registrar Installation to run on a Cisco
Prime Network Registrar Virtual Appliance
This section describes how to upgrade an existing installation of Cisco Prime Network Registrar to become
a Cisco Prime Network Registrar virtual appliance.
Cisco Prime Network Registrar 9.1 Installation Guide
46
Cisco Prime Network Registrar Virtual Appliance
Upgrading the Cisco Prime Network Registrar Virtual Appliance