For nova baremetal, there should be a service that runs the nova-baremetal-deploy-helper script. The nova-baremetal-deploy-helper script is responsible for populating the booting node's disk via iscsi.

The script starts a wsgi server and runs forever on port 10000 (or until the service is stopped).  Without the running service, nova baremetal will not function.

This is a bit outdated, but there's info here:
https://wiki.openstack.org/wiki/Baremetal#Services

The service file itself is pretty simple:
$ cat /lib/systemd/system/nova-baremetal-deploy-helper.service 
[Unit]
Description=nova-baremetal-deploy-helper Service
After=os-refresh-config.service
Requires=nova-baremetal-deploy-helper-create-dir.service

[Service]
ExecStart=/opt/stack/venvs/nova/bin/nova-baremetal-deploy-helper --config-dir /etc/nova
User=nova


[Install]
WantedBy=multi-user.target
Alias=nova-baremetal-deploy-helper.service

This applies to both openstack-nova-compute-2013.2.1-2.fc20 and openstack-nova-compute-2014.1-0.5.b1.fc21