To create a load balancer, use the neutron lbaas-loadbalancer-create command shown here:

neutron lbaas-loadbalancer-create
[--tenant-id TENANT_ID]
[--description DESCRIPTION]
[--name NAME]
[--admin-state-down]
[--provider PROVIDER]
[--flavor FLAVOR]
[--vip-address VIP_ADDRESS]
VIP_SUBNET 

The --tenant-id argument is optional and can be used to associate the load balancer with a project other than the creator.

The --description argument is optional and can be used to provide a description for the load balancer.

The --name argument is optional and can be used to specify a name for the load balancer.

The --admin-state-down argument is optional and can be used to set the load balancer in a DOWN state at creation.

The --provider argument is optional and can be used to specify the load balancer provider driver in lieu of the default. The default provider in this environment is HAProxy.

The --vip-address argument is optional and can be used to specify a particular IP address for the VIP.

The VIP_SUBNET argument is used to specify the subnet from which the load balancer VIP will be procured.