OpenStack Zed : Configure Neutron (Compute Node)2023/06/28

Configure OpenStack Network Service (Neutron).

This example is not All in One Settings like here, but Configure the 3 Nodes environment like follows.
Neutron needs a plugin software, it's possible to choose it from some softwares.
This example chooses ML2 plugin. ( it uses Open vSwitch under the backend )

------------+--------------------------+--------------------------+------------
            |                          |                          |
        eth0|10.0.0.30             eth0|10.0.0.50             eth0|10.0.0.51
+-----------+-----------+  +-----------+-----------+  +-----------+-----------+
|   [ dlp.srv.world ]   |  | [ network.srv.world ] |  |  [ node01.srv.world ] |
|     (Control Node)    |  |     (Network Node)    |  |     (Compute Node)    |
|                       |  |                       |  |                       |
|  MariaDB    RabbitMQ  |  |  Neutron L2/L3 Agent  |  |        Libvirt        |
|  Memcached  Nginx     |  |   Neutron Metadata    |  |      Nova Compute     |
|  Keystone   httpd     |  |     Open vSwitch      |  |    Neutron L2 Agent   |
|  Glance     Nova API  |  |                       |  |      Open vSwitch     |
|  Neutron Server       |  |                       |  |                       |
|  Neutron Metadata     |  |                       |  |                       |
+-----------------------+  +-----------------------+  +-----------------------+

* Refer to here for settings of Nova Compute on Compute Node

[1]	Install Neutron services on Compute Node.

root@node01:~#

apt -y install neutron-common neutron-plugin-ml2 neutron-openvswitch-agent

[2]	Configure Compute Node.

root@node01:~#

mv /etc/neutron/neutron.conf /etc/neutron/neutron.conf.org

root@node01:~#

vi /etc/neutron/neutron.conf

# create new

[DEFAULT]
core_plugin = ml2
service_plugins = router
auth_strategy = keystone
state_path = /var/lib/neutron
allow_overlapping_ips = True
# RabbitMQ connection info
transport_url = rabbit://openstack:password@dlp.srv.world

[agent]
root_helper = sudo /usr/bin/neutron-rootwrap /etc/neutron/rootwrap.conf

# Keystone auth info
[keystone_authtoken]
www_authenticate_uri = https://dlp.srv.world:5000
auth_url = https://dlp.srv.world:5000
memcached_servers = dlp.srv.world:11211
auth_type = password
project_domain_name = default
user_domain_name = default
project_name = service
username = neutron
password = servicepassword
# if using self-signed certs on Apache2 Keystone, turn to [true]
insecure = false

[oslo_concurrency]
lock_path = $state_path/lock

[oslo_policy]
enforce_new_defaults = true

root@node01:~#

chmod 640 /etc/neutron/neutron.conf

root@node01:~#

chgrp neutron /etc/neutron/neutron.conf

root@node01:~#

mv /etc/neutron/plugins/ml2/ml2_conf.ini /etc/neutron/plugins/ml2/ml2_conf.ini.org

root@node01:~#

vi /etc/neutron/plugins/ml2/ml2_conf.ini

# create new

[DEFAULT]

[ml2]
type_drivers = flat,vlan,vxlan
tenant_network_types =
mechanism_drivers = openvswitch
extension_drivers = port_security,qos

[ml2_type_flat]

[ml2_type_vxlan]

[securitygroup]
enable_security_group = True
enable_ipset = True

root@node01:~#

mv /etc/neutron/plugins/ml2/openvswitch_agent.ini /etc/neutron/plugins/ml2/openvswitch_agent.ini.org

root@node01:~#

vi /etc/neutron/plugins/ml2/openvswitch_agent.ini

# create new

[DEFAULT]

[agent]

[ovs]

[securitygroup]
firewall_driver = openvswitch
enable_security_group = True
enable_ipset = True

root@node01:~#

chmod 640 /etc/neutron/plugins/ml2/{ml2_conf.ini,openvswitch_agent.ini}

root@node01:~#

chgrp neutron /etc/neutron/plugins/ml2/{ml2_conf.ini,openvswitch_agent.ini}

root@node01:~#

vi /etc/nova/nova.conf

# add follows into the [DEFAULT] section

vif_plugging_is_fatal = True
vif_plugging_timeout = 300

# add follows to the end: Neutron auth info
# the value of [metadata_proxy_shared_secret] is the same with the one in [metadata_agent.ini]

[neutron]
auth_url = https://dlp.srv.world:5000
auth_type = password
project_domain_name = default
user_domain_name = default
region_name = RegionOne
project_name = service
username = neutron
password = servicepassword
service_metadata_proxy = True
metadata_proxy_shared_secret = metadata_secret
insecure = false

root@node01:~#

ip link set up ovs-system

root@node01:~#

echo -e '\nauto ovs-system\niface ovs-system inet manual' >> /etc/network/interfaces

root@node01:~#

ln -s /etc/neutron/plugins/ml2/ml2_conf.ini /etc/neutron/plugin.ini

root@node01:~#

systemctl restart nova-compute neutron-openvswitch-agent

root@node01:~#

systemctl enable neutron-openvswitch-agent

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