pdb /usr/bin/neutron-server

[root@bogon good]# cat /usr/lib/systemd/system/neutron-server.service
[Unit]
Description=OpenStack Neutron Server
After=syslog.target network.target

[Service]
Type=notify
User=neutron
ExecStart=/usr/bin/neutron-server --config-file /usr/share/neutron/neutron-dist.conf --config-dir /usr/share/neutron/server --config-file /etc/neutron/neutron.conf --config-file /etc/neutron/plugin.ini --config-dir /etc/neutron/conf.d/common --config-dir /etc/neutron/conf.d/neutron-server --log-file /var/log/neutron/server.log
PrivateTmp=true
NotifyAccess=all
KillMode=process
Restart=on-failure
TimeoutStartSec=0

[root@bogon good]# /usr/bin/python -m pdb   /usr/bin/neutron-server --config-file /usr/share/neutron/neutron-dist.conf --config-dir /usr/share/neutron/server --config-file /etc/neutron/neutron.conf --config-file /etc/neutron/plugin.ini --config-dir /etc/neutron/conf.d/common --config-dir /etc/neutron/conf.d/neutron-server --log-file /var/log/neutron/server.log
> /usr/bin/neutron-server(4)<module>()
-> import sys
(Pdb) b /usr/lib/python2.7/site-packages/networking_generic_switch/generic_switch_mech.py:554
Breakpoint 1 at /usr/lib/python2.7/site-packages/networking_generic_switch/generic_switch_mech.py:554
(Pdb) b /usr/lib/python2.7/site-packages/networking_generic_switch/generic_switch_mech.py:75
Breakpoint 2 at /usr/lib/python2.7/site-packages/networking_generic_switch/generic_switch_mech.py:75
(Pdb) c
/usr/lib/python2.7/site-packages/paste/deploy/loadwsgi.py:22: PkgResourcesDeprecationWarning: Parameters to load are deprecated.  Call .resolve and .require separately.
  return pkg_resources.EntryPoint.parse("x=" + s).load(False)
> /usr/lib/python2.7/site-packages/networking_generic_switch/generic_switch_mech.py(554)GenericSwitchDriver()
-> def _get_devices_by_physnet(self, physnet):
(Pdb) 

> /usr/lib/python2.7/site-packages/networking_generic_switch/generic_switch_mech.py(554)GenericSwitchDriver()->{‘__module__‘: ‘networking_g...c_switch_mech‘, ‘__return__‘: {‘__module__‘: ‘networking_g...c_switch_mech‘, ‘__return__‘: {‘__module__‘: ‘networking_g...c_switch_mech‘, ‘__return__‘: {‘__module__‘: ‘networking_g...c_switch_mech‘, ‘__return__‘: {‘__module__‘: ‘networking_g...c_switch_mech‘, ‘__return__‘: {‘__module__‘: ‘networking_g...c_switch_mech‘, ‘__return__‘: {...}, ‘_get_devices_by_physnet‘: <functio...aaa8a0c8>, ‘_is_port_bound‘: <staticm...aaa9c980>, ...}, ‘_get_devices_by_physnet‘: <functio...aaa8a0c8>, ‘_is_port_bound‘: <staticm...aaa9c980>, ...}, ‘_get_devices_by_physnet‘: <functio...aaa8a0c8>, ‘_is_port_bound‘: <staticm...aaa9c980>, ...}, ‘_get_devices_by_physnet‘: <functio...aaa8a0c8>, ‘_is_port_bound‘: <staticm...aaa9c980>, ...}, ‘_get_devices_by_physnet‘: <functio...aaa8a0c8>, ‘_is_port_bound‘: <staticm...aaa9c980>, ...}, ‘_get_devices_by_physnet‘: <functio...aaa8a0c8>, ‘_is_port_bound‘: <staticm...aaa9c980>, ...}