Openstack Juno Part 5 - Neutron configuring Network Node

Installing the Packages

yum install openstack-neutron openstack-neutron-ml2 openstack-neutron-openvswitch ipset  -y

Configuring  the Service
openstack-config --set /etc/neutron/neutron.conf DEFAULT auth_strategy keystone
openstack-config --set /etc/neutron/neutron.conf keystone_authtoken auth_uri http://controller:5000/v2.0
openstack-config --set /etc/neutron/neutron.conf keystone_authtoken identity_uri http://controller:35357
openstack-config --set /etc/neutron/neutron.conf keystone_authtoken admin_tenant_name service
openstack-config --set /etc/neutron/neutron.conf keystone_authtoken admin_user neutron
openstack-config --set /etc/neutron/neutron.conf keystone_authtoken admin_password mar4neutron

openstack-config --set /etc/neutron/neutron.conf DEFAULT rpc_backend rabbit
openstack-config --set /etc/neutron/neutron.conf DEFAULT rabbit_host controller
openstack-config --set /etc/neutron/neutron.conf DEFAULT rabbit_password guest


openstack-config --set /etc/neutron/neutron.conf DEFAULT core_plugin ml2
openstack-config --set /etc/neutron/neutron.conf DEFAULT service_plugins router
openstack-config --set /etc/neutron/neutron.conf DEFAULT allow_overlapping_ips True


#verbose = True to the [DEFAULT] section in /etc/neutron/neutron.conf to assist with troubleshooting.
#Comment out any lines in the [service_providers] section.

openstack-config --set /etc/neutron/l3_agent.ini DEFAULT interface_driver neutron.agent.linux.interface.OVSInterfaceDriver
openstack-config --set /etc/neutron/l3_agent.ini DEFAULT use_namespaces True

#We recommend adding verbose = True to the [DEFAULT] section in /etc/neutron/l3_agent.ini to assist with #troubleshooting.


openstack-config --set /etc/neutron/dhcp_agent.ini DEFAULT interface_driver neutron.agent.linux.interface.OVSInterfaceDriver
openstack-config --set /etc/neutron/dhcp_agent.ini DEFAULT dhcp_driver neutron.agent.linux.dhcp.Dnsmasq
openstack-config --set /etc/neutron/dhcp_agent.ini DEFAULT use_namespaces True
openstack-config --set /etc/neutron/dhcp_agent.ini DEFAULT dnsmasq_config_file /etc/neutron/dnsmasq-neutron.conf

echo "dhcp-option-force=26,1454" >> /etc/neutron/dnsmasq-neutron.conf
chown neutron:neutron /etc/neutron/dnsmasq-neutron.conf

openstack-config --set /etc/neutron/metadata_agent.ini DEFAULT auth_url http://controller:5000/v2.0
openstack-config --set /etc/neutron/metadata_agent.ini DEFAULT auth_region regionOne
openstack-config --set /etc/neutron/metadata_agent.ini DEFAULT admin_tenant_name service
openstack-config --set /etc/neutron/metadata_agent.ini DEFAULT admin_user neutron
openstack-config --set /etc/neutron/metadata_agent.ini DEFAULT admin_password mar4neutron
openstack-config --set /etc/neutron/metadata_agent.ini DEFAULT nova_metadata_ip controller
openstack-config --set /etc/neutron/metadata_agent.ini DEFAULT metadata_proxy_shared_secret mar4meta

#We recommend adding verbose = True to the [DEFAULT] section in /etc/neutron/metadata_agent.ini to assist with #troubleshooting.

#Perform the next two steps on the controller node.
#On the controller node, configure Compute to use the metadata service:
#Replace METADATA_SECRET with the secret you chose for the metadata proxy.

openstack-config --set /etc/nova/nova.conf DEFAULT service_neutron_metadata_proxy true
openstack-config --set /etc/nova/nova.conf DEFAULT neutron_metadata_proxy_shared_secret mar4meta

On the controller node, restart the Compute API service:
systemctl restart openstack-nova-api.service

# To configure the Modular Layer 2 (ML2) plug-in

 # Replace INSTANCE_TUNNELS_INTERFACE_IP_ADDRESS with the IP address of the instance tunnels network #interface on your network node. This guide uses 10.0.1.21 for the IP address of the instance tunnels network interface #on the network node.
#Dedicated IP for tunneling in network node
openstack-config --set /etc/neutron/plugins/ml2/ml2_conf.ini ml2 type_drivers flat,gre
openstack-config --set /etc/neutron/plugins/ml2/ml2_conf.ini ml2 tenant_network_types gre
openstack-config --set /etc/neutron/plugins/ml2/ml2_conf.ini ml2 mechanism_drivers openvswitch
openstack-config --set /etc/neutron/plugins/ml2/ml2_conf.ini ml2_type_gre tunnel_id_ranges 1:1000
openstack-config --set /etc/neutron/plugins/ml2/ml2_conf.ini ml2_type_flat flat_networks external

openstack-config --set /etc/neutron/plugins/ml2/ml2_conf.ini ovs local_ip 10.0.0.212
openstack-config --set /etc/neutron/plugins/ml2/ml2_conf.ini ovs tunnel_type gre
openstack-config --set /etc/neutron/plugins/ml2/ml2_conf.ini ovs enable_tunneling True
openstack-config --set /etc/neutron/plugins/ml2/ml2_conf.ini ovs bridge_mappings external:br-ex


openstack-config --set /etc/neutron/plugins/ml2/ml2_conf.ini securitygroup firewall_driver neutron.agent.linux.iptables_firewall.OVSHybridIptablesFirewallDriver
openstack-config --set /etc/neutron/plugins/ml2/ml2_conf.ini securitygroup enable_security_group True
openstack-config --set /etc/neutron/plugins/ml2/ml2_conf.ini securitygroup enable_ipset True


systemctl enable openvswitch.service
systemctl start openvswitch.service

#Add the external bridge:
ovs-vsctl add-br br-ex
#Add a port to the external bridge that connects to the physical external network interface:
#Replace INTERFACE_NAME with the actual interface name. For example, eth2 or ens256.
ovs-vsctl add-port br-ex eth1


#Depending on your network interface driver, you may need to disable Generic Receive Offload (GRO) to achieve #suitable throughput between your instances and the external network.
#To temporarily disable GRO on the external network interface while testing your environment:
# ethtool -K INTERFACE_NAME gro off



ln -s /etc/neutron/plugins/ml2/ml2_conf.ini /etc/neutron/plugin.ini
cp /usr/lib/systemd/system/neutron-openvswitch-agent.service /usr/lib/systemd/system/neutron-openvswitch-agent.service.orig
sed -i 's,plugins/openvswitch/ovs_neutron_plugin.ini,plugin.ini,g' /usr/lib/systemd/system/neutron-openvswitch-agent.service


Starting the service's 

systemctl enable neutron-openvswitch-agent.service
systemctl enable neutron-l3-agent.service
systemctl enable neutron-dhcp-agent.service
systemctl enable neutron-metadata-agent.service
systemctl enable neutron-ovs-cleanup.service
systemctl start neutron-openvswitch-agent.service
systemctl start neutron-l3-agent.service
systemctl start neutron-dhcp-agent.service
systemctl start neutron-metadata-agent.service