@@ -98,8 +98,7 @@ Follow logs for a specific service::

 Following logs for multiple services simultaneously::

-  journalctl -f --unit devstack@n-cpu.service --unit

-  devstack@n-cond.service

+  journalctl -f --unit devstack@n-cpu.service --unit devstack@n-cond.service

 or you can even do wild cards to follow all the nova services::

@@ -121,6 +120,29 @@ left/right arrow keys.

 See ``man 1 journalctl`` for more.

+Debugging with pdb

+==================

+

+In order to break into a regular pdb session on a systemd-controlled

+service, you need to invoke the process manually - that is, take it out

+of systemd's control.

+

+Discover the command systemd is using to run the service::

+

+  systemctl show devstack@n-sch.service -p ExecStart --no-pager

+

+Stop the systemd service::

+

+  sudo systemctl stop devstack@n-sch.service

+

+Inject your breakpoint in the source, e.g.::

+

+  import pdb; pdb.set_trace()

+

+Invoke the command manually::

+

+  /usr/local/bin/nova-scheduler --config-file /etc/nova/nova.conf

+

 Known Issues

 ============