If setting ControllerCount: 3 , then dhcp_agents_per_network=1 in neutron.conf when --control-scale is not set in Red Hat OpenStack Platform 10

Issue

If setting ControllerCount: 3 , then dhcp_agents_per_network=1 in neutron.conf when --control-scale is not set

After deploying 3 controllers, with the Count parameters in the templates and not provided via CLI:

network-environment.yaml

parameter_defaults:
  ControllerCount: 3
  ComputeCount: 1

Without the --control-scale CLI parameter, the following is deployed:

[root@overcloud-controller-0 ~]# grep per /etc/neutron/* -R | grep dhcp
/etc/neutron/dhcp_agent.ini:root_helper=sudo neutron-rootwrap /etc/neutron/rootwrap.conf
/etc/neutron/neutron.conf:#dhcp_agents_per_network = 1
/etc/neutron/neutron.conf:dhcp_agents_per_network=1

[stack@undercloud-1 ~]$ neutron dhcp-agent-list-hosting-net private
+--------------------------------------+------------------------------------+----------------+-------+
| id                                   | host                               | admin_state_up | alive |
+--------------------------------------+------------------------------------+----------------+-------+
| 98d52d00-0f10-4d6b-ada4-d32d2699cede | overcloud-controller-0.localdomain | True           | :-)   |
+--------------------------------------+------------------------------------+----------------+-------+

Meaning that redundancy for DHCP agent is missing.