How to disable NetworkManager on OpenStack environment with Modonet.

Issue

• We met some issue on Midonet Neutron plugin with NetworkManager-enabled Neutron host.
• As we investigated, both Midonet and OpenStack itself needs NetworkManager to be disabled.

• Can we get how to disable NetworkManager on OpenStack environment with Modonet ?

• We're checking following document:

⁠2.1.1. Disable Network Manager

To disable and stop Network Manager, we need to do the following,

# systemctl stop NetworkManager.service
# systemctl disable NetworkManager.service

　
But we also saw we need to add the following parameter additionally;

NM_CONTROLLED=no

May I have questions:
　
1. Is this extra setting in the ifcfg-X under /etc/sysconfig/network-scripts/ directory is required?
2. If true, we need to have this in all of interfaces , or which we're using ?