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OpenStack Newton : Configure Neutron#2
2017/07/02
 
Configure OpenStack Network Service (Neutron).
This example is based on the emvironment like follows.
If you'd like to install Neutron services on another Computer, refer to here.
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 
          +-----------+-----------+
          |    [ Control Node ]   |
          |                       |
          |  MariaDB    RabbitMQ  |
          |  Memcached  httpd     |
          |  Keystone   Glance    |
          |   Nova API,Compute    |
          |    Neutron Server     |
          |  L2,L3,Metadata Agent |
          +-----------------------+

[1] Install Neutron services.
For selection during the installation, select [No] to all or input any value (because create a new conf file later).
root@dlp ~(keystone)#
apt -y install neutron-server neutron-plugin-openvswitch-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]
auth_uri = http://10.0.0.30:5000
auth_url = http://10.0.0.30:35357
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 connection info
[nova]
auth_url = http://10.0.0.30:35357
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 78: change (set empty now)

external_network_bridge =
root@dlp ~(keystone)#
vi /etc/neutron/dhcp_agent.ini
# line 35: change

enable_isolated_metadata =
True
root@dlp ~(keystone)#
vi /etc/neutron/metadata_agent.ini
# line 20: specify Nova API server

nova_metadata_ip =
10.0.0.30
# line 30: specify any secret-key

metadata_proxy_shared_secret =
metadata_secret
root@dlp ~(keystone)#
vi /etc/neutron/plugins/ml2/ml2_conf.ini
# line 90: change

type_drivers =
flat,vlan,vxlan
# line 94: change (set empty now)

tenant_network_types =
root@dlp ~(keystone)#
vi /etc/neutron/plugins/ml2/openvswitch_agent.ini
# line 99: comment out

#
tunnel_types = gre
# line 174: add own IP address

local_ip = 10.0.0.30
# line 180: comment out

#
bridge_mappings = external:br-ex
root@dlp ~(keystone)#
vi /etc/nova/nova.conf
# add follows into [DEFAULT] section

use_neutron = True
linuxnet_interface_driver = nova.network.linux_net.LinuxOVSInterfaceDriver
firewall_driver = nova.virt.firewall.NoopFirewallDriver
vif_plugging_is_fatal = True
vif_plugging_timeout = 300

# dd 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]
url = http://10.0.0.30:9696
auth_url = http://10.0.0.30:35357
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)#
ovs-vsctl add-br br-int

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 openvswitch-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          | Availabil | Alive | State | Binary                    |
+-----------+--------------------+---------------+-----------+-------+-------+---------------------------+
| 08ee644a- | L3 agent           | dlp.srv.world | nova      | True  | UP    | neutron-l3-agent          |
| 6ed6d6a0- | Linux bridge agent | dlp.srv.world | None      | True  | UP    | neutron-linuxbridge-agent |
| c88a5708- | DHCP agent         | dlp.srv.world | nova      | True  | UP    | neutron-dhcp-agent        |
| f9950522- | Metadata agent     | dlp.srv.world | None      | True  | UP    | neutron-metadata-agent    |
+-----------+--------------------+---------------+-----------+-------+-------+---------------------------+
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