Utilizing NetworkManager as the only networking solution

[dcontiveros-nf]

Hello all,

Quick rundown of what I am trying to accomplish

Objective: To connect a KVM hypervisor node to my management server.

I am receiving this error:

Configure Network ...         [Failed]
Missing bridge/device network configuration, need to add your network configuration into /etc/sysconfig/network-scripts at first
Try to restore your system:

I saw that the agent setup was attempting to setup cloudbr[01] as intended. I then looked at the code here and saw that for bridges it always disables NetworkManager:

cloudstack/python/lib/cloudutils/serviceConfig.py

Line 272 in 97c96a5

cfo.addEntry("NM_CONTROLLED", "no")

I am trying to accomplish the concurrent use of NetworkManager and OpenVSwitch. The documentation I have read seems to use ifcfg files to specify the information for each bridge. Here is an example:

https://docs.cloudstack.apache.org/en/4.20.0.0/installguide/hypervisor/kvm.html#configure-rhel-centos-for-advanced-networks

However, I am trying to avoid the use of ifcfg files per the following post:

https://www.redhat.com/en/blog/rhel-9-networking-say-goodbye-ifcfg-files-and-hello-keyfiles

Is there a way to completely utilize NetworkManager? I am attempting something similar to this:

#5443

I was under the impression if I had setup similar configs within NetworkManager that I could get past this, but the serviceConfig.py seems to have a stop/disable operation here:

cloudstack/python/lib/cloudutils/serviceConfig.py

Line 311 in 97c96a5

self.netMgrRunning = self.syscfg.svo.isServiceRunning("NetworkManager")

If I misread please let me know. I would like to use NetworkManager exclusively. Thanks.

[DaanHoogland]

You are right @dcontiveros-nf , NetworkManager is forcefully stopped by cloudstack (as per the serviceConfig.py code you pointed at)

I think it is only the setup script and ACS only cares about the interfaces being there. (cc @weizhouapache agree?)
So you might have to edit the setup script to addd a flag for your requirements.

[weizhouapache]

I would suggest users configure the host network manually, before adding it to cloudstack
users can use different tools (netplan, networkmanager, network scripts, etc), and support more complication network configurations as they want (e;g. use bond, alternative network interface name, etc).
the script serviceConfig.py only support simple network configurations. If the linux bridges have been pre-configured, the script will skip the network configurations.