Ubuntu 18.04
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OpenStack Rocky : Configure Neutron#2
2018/10/19
 
Configure OpenStack Network Service (Neutron).
This example is based on the emvironment like follows.
If you'd like to install Neutron services on another Host, refer to here.
Neutron needs a plugin software, it's possible to choose it from some softwares.
This example chooses ML2 plugin. ( it uses LinuxBridge under the backend )
        eth0|10.0.0.30 
+-----------+-----------+
|    [ Control Node ]   |
|                       |
|  MariaDB    RabbitMQ  |
|  Memcached  httpd     |
|  Keystone   Glance    |
|   Nova API,Compute    |
|    Neutron Server     |
|  L2,L3,Metadata Agent |
+-----------------------+

[1] Install Neutron services.
root@dlp ~(keystone)#
apt -y install neutron-server neutron-plugin-ml2 neutron-linuxbridge-agent neutron-l3-agent neutron-dhcp-agent neutron-metadata-agent python-neutronclient
[2] Configure Neutron.
root@dlp ~(keystone)#
mv /etc/neutron/neutron.conf /etc/neutron/neutron.conf.org

root@dlp ~(keystone)#
vi /etc/neutron/neutron.conf
# create new

[DEFAULT]
core_plugin = ml2
service_plugins = router
auth_strategy = keystone
state_path = /var/lib/neutron
dhcp_agent_notification = True
allow_overlapping_ips = True
notify_nova_on_port_status_changes = True
notify_nova_on_port_data_changes = True
# RabbitMQ connection info
transport_url = rabbit://openstack:password@10.0.0.30

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

# Keystone auth info
[keystone_authtoken]
www_authenticate_uri = http://10.0.0.30:5000
auth_url = http://10.0.0.30:5000
memcached_servers = 10.0.0.30:11211
auth_type = password
project_domain_name = default
user_domain_name = default
project_name = service
username = neutron
password = servicepassword

# MariaDB connection info
[database]
connection = mysql+pymysql://neutron:password@10.0.0.30/neutron_ml2

# Nova auth info
[nova]
auth_url = http://10.0.0.30:5000
auth_type = password
project_domain_name = default
user_domain_name = default
region_name = RegionOne
project_name = service
username = nova
password = servicepassword

[oslo_concurrency]
lock_path = $state_path/tmp

root@dlp ~(keystone)#
chmod 640 /etc/neutron/neutron.conf

root@dlp ~(keystone)#
chgrp neutron /etc/neutron/neutron.conf

root@dlp ~(keystone)#
vi /etc/neutron/l3_agent.ini
# line 17: add

interface_driver = linuxbridge
root@dlp ~(keystone)#
vi /etc/neutron/dhcp_agent.ini
# line 17: add

interface_driver = linuxbridge
# line 28: uncomment

dhcp_driver = neutron.agent.linux.dhcp.Dnsmasq
# line 37: uncomment and change

enable_isolated_metadata =
true
root@dlp ~(keystone)#
vi /etc/neutron/metadata_agent.ini
# line 22: uncomment and specify Nova API server

nova_metadata_host =
10.0.0.30
# line 34: uncomment and specify any secret key you like

metadata_proxy_shared_secret =
metadata_secret
# line 260: uncomment and specify Memcache Server

memcache_servers =
10.0.0.30:11211
root@dlp ~(keystone)#
vi /etc/neutron/plugins/ml2/ml2_conf.ini
# line 129: add (it's OK with no value for [tenant_network_types] (set later if need))

[ml2]
type_drivers = flat,vlan,vxlan
tenant_network_types =
mechanism_drivers = linuxbridge,l2population
extension_drivers = port_security
root@dlp ~(keystone)#
vi /etc/neutron/plugins/ml2/linuxbridge_agent.ini
# line 182: add

[securitygroup]
enable_security_group = True
firewall_driver = iptables
enable_ipset = True
# line 235: add own IP address

local_ip = 10.0.0.30
root@dlp ~(keystone)#
vi /etc/nova/nova.conf
# add follows into [DEFAULT] section

use_neutron = True
linuxnet_interface_driver = nova.network.linux_net.LinuxBridgeInterfaceDriver
firewall_driver = nova.virt.firewall.NoopFirewallDriver
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 = http://10.0.0.30:5000
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
[3] Start Neutron services.
root@dlp ~(keystone)#
ln -s /etc/neutron/plugins/ml2/ml2_conf.ini /etc/neutron/plugin.ini

root@dlp ~(keystone)#
su -s /bin/bash neutron -c "neutron-db-manage --config-file /etc/neutron/neutron.conf --config-file /etc/neutron/plugin.ini upgrade head"
root@dlp ~(keystone)#
for service in server l3-agent dhcp-agent metadata-agent linuxbridge-agent; do
systemctl restart neutron-$service
systemctl enable neutron-$service
done
root@dlp ~(keystone)#
systemctl restart nova-api nova-compute
# show status

root@dlp ~(keystone)#
openstack network agent list

+--------------------------------------+--------------------+---------------+-------------------+-------+-------+---------------------------+
| ID                                   | Agent Type         | Host          | Availability Zone | Alive | State | Binary                    |
+--------------------------------------+--------------------+---------------+-------------------+-------+-------+---------------------------+
| 753a85db-9f1b-43e7-9ac3-aa5bd441eb8f | DHCP agent         | dlp.srv.world | nova              | :-)   | UP    | neutron-dhcp-agent        |
| ab2072f2-8b81-4c4e-92cc-3042ea0cc683 | L3 agent           | dlp.srv.world | nova              | :-)   | UP    | neutron-l3-agent          |
| f7881ba2-ee74-4a22-9267-d5ff20b1e825 | Metadata agent     | dlp.srv.world | None              | :-)   | UP    | neutron-metadata-agent    |
| fd185825-dce8-46d5-beea-9b3e0e787a92 | Linux bridge agent | dlp.srv.world | None              | :-)   | UP    | neutron-linuxbridge-agent |
+--------------------------------------+--------------------+---------------+-------------------+-------+-------+---------------------------+
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