Configure Nova Networking Settings for Host

You can configure your hypervisors to utilize OpenStack Nova networking instead of OpenStack Neutron. In PMO, Nova networking can be configured to work with DHCP or a range of static IP addresses.

In case of DHCP, the services that run on the virtual machine instances obtain the IP address from an external DHCP server that is not managed by Platform9.

When you choose to use a static IP address, you must specify a subnet/CIDR and IP pool range for Platform9 to manage. PMO uses this IP pool to assign a static IP address for a new instance that gets deployed, and attaches the instance to the network. When the instance is deleted, any IP addresses originally taken from the pool are returned to the pool.

As part of this process, you will need to specify the tenants that can access a given Nova network.

To configure Nova networking settings for a host, follow the steps given below.

  1. Log in to Clarity.
  2. Click Infrastructure in the left panel.
  3. Click the Hosts tab.
  4. If you are authorizing a host, click Authorize for the host. If you are editing a host configuration, select a host, click Configure Host seen above the list of hosts.
  5. Click Networking Tab.
  6. Enter the following details

    Field Description
    Name Name of the network
    Description Description of the network
    Host Bridge Device Name of the host bridge device
  7. Select whether you want assign a dynamic IP address from an external DHCP server or a static IP address.

    Do either of the following.

    • For dynamic IP address - Select the ‘Do not assign IP addresses to instances. There is an existing DHCP server for this network’ option.
    • For static IP address- Select the ‘ Allocate IP addresses from a pool and assign to instances’ option. Enter the following details.

      Field Description
      Network (CIDR) Network address of the subnet
      Start of IP Pool Start address of the static IP pool
      End of IP Pool End address of the static IP pool
      Gateway Gateway address
      Primary DNS Primary Domain Name Server address
      Secondary DNS Secondary Domain Name Server address
  8. Click the Tenants tab and select the check boxes for the tenants that must have access to the network.
  9. Click Update.

Your Nova networking is now configured and ready to use.