OpenStack Guide

2. If the interfaces for the bridge are not operational, on each Nova compute node and network node , run the

following command to bring up all the Ethernet ports and physical bridges:

# ifconfig –a

interface

For example, on a Nova Compute Node and network node with eth4 and eth5 connected to switches, execute the

following commands to ensure that

eth5 and eth4 are operational:

# ifconfig –a eth5 up

# ifconfig –a eth4 up

Step 3: Configuring the Rootwrap

The Dell OVS agent uses the Ubuntu shell command, which requires that you configure the Neutron Rootwrap

To configure the Neutron Rootwrap:

1. On the Nova Compute and Network Nodes, navigate to the /etc/quantum/plugins/dell/agent/

dell_ovs_quantum_plugin.ini directory

2. In the dell_ovs_quantum_plugin.ini file, search for the keyword [AGENT]

3. Add the following line under the [AGENT] section

[AGENT]

root_helper = sudo /usr/bin/quantum-rootwrap /etc/quantum/rootwrap.conf

4. Navigate to the etc/quantum/ directory.

5. In the rootwrap.conf file, search for the [DEFAULT] keyword.

6. Add the following line under [DEFAULT] section:

[DEFAULT]

root_helper = sudo /usr/bin/quantum-rootwrap /etc/quantum/rootwrap.conf

7. Navigate to the /etc/quantum/rootwrap.d/openvswitch-plugin.filters directory.

8. In the openvswitch-plugin.filters file, add the hostname and lldpctl commands to the file as shown in the following

example:

# quantum-rootwrap command filters for nodes on which quantum is

# expected to control network

# This file should be owned by (and only-writeable by) the root user

# format seems to be

# cmd-name: filter-name, raw-command, user, args

[Filters]

# openvswitch-agent

# unclear whether both variants are necessary, but I'm transliterating

# from the old mechanism

ovs-vsctl: CommandFilter, /bin/ovs-vsctl, root

ovs-vsctl_usr: CommandFilter, /usr/bin/ovs-vsctl, root

ovs-vsctl_sbin: CommandFilter, /sbin/ovs-vsctl, root

ovs-vsctl_sbin_usr: CommandFilter, /usr/sbin/ovs-vsctl, root

ovs-ofctl: CommandFilter, /bin/ovs-ofctl, root

ovs-ofctl_usr: CommandFilter, /usr/bin/ovs-ofctl, root