OpenStack Flamingo : Neutron OVN 設定 (Compute ノード)2025/11/20 |
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OpenStack Network Service（Neutron）の設定です。 当例では以下のような環境を例に、Open Virtual Network (OVN) を利用した Neutron ネットワークを設定します。
------------+--------------------------+--------------------------+------------
| | |
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 | | Open vSwitch | | Libvirt |
| Memcached Nginx | | Neutron Server | | Nova Compute |
| Keystone httpd | | OVN-Northd | | Open vSwitch |
| Glance Nova API | | Nginx | | OVN Metadata Agent |
| | | | | OVN-Controller |
+-----------------------+ +-----------------------+ +-----------------------+
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| [1] | Compute ノードに必要なパッケージをインストールします。 |
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root@node01:~# apt -y install neutron-common neutron-plugin-ml2 neutron-dhcp-agent neutron-ovn-metadata-agent ovn-host openvswitch-switch
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| [2] | Compute ノードの Neutron サービスの設定です。 |
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root@node01:~# mv /etc/neutron/neutron.conf /etc/neutron/neutron.conf.org
root@node01:~#
vi /etc/neutron/neutron.conf # 新規作成 [DEFAULT] core_plugin = ml2 service_plugins = ovn-router auth_strategy = keystone state_path = /var/lib/neutron allow_overlapping_ips = True # RabbitMQ 接続情報 transport_url = rabbit://openstack:password@dlp.srv.world [agent] root_helper = sudo /usr/bin/neutron-rootwrap /etc/neutron/rootwrap.conf # Keystone 認証情報 [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 # Apache2 Keystone で自己署名の証明書を使用の場合は [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 # 新規作成
[DEFAULT]
debug = false
[ml2]
type_drivers = flat,geneve
tenant_network_types = geneve
mechanism_drivers = ovn
extension_drivers = port_security
overlay_ip_version = 4
[ml2_type_geneve]
vni_ranges = 1:65536
max_header_size = 38
[ml2_type_flat]
flat_networks = *
[securitygroup]
enable_security_group = True
firewall_driver = neutron.agent.linux.iptables_firewall.OVSHybridIptablesFirewallDriver
[ovn]
# Network ノードの IP アドレス
ovn_nb_connection = tcp:10.0.0.50:6641
ovn_sb_connection = tcp:10.0.0.50:6642
ovn_l3_scheduler = leastloaded
ovn_metadata_enabled = True
root@node01:~#
chmod 640 /etc/neutron/plugins/ml2/ml2_conf.ini root@node01:~# chgrp neutron /etc/neutron/plugins/ml2/ml2_conf.ini
root@node01:~#
vi /etc/neutron/neutron_ovn_metadata_agent.ini [DEFAULT] # 2行目 : 追記 # Nova API サーバーを指定 nova_metadata_host = dlp.srv.world nova_metadata_protocol = https # 任意のシークレットキーを指定 metadata_proxy_shared_secret = metadata_secret # 272行目 : 変更 [ovs] ovsdb_connection = tcp:127.0.0.1:6640 # 最終行に追記 [agent] root_helper = sudo neutron-rootwrap /etc/neutron/rootwrap.conf [ovn] # Network ノードの IP アドレス ovn_sb_connection = tcp:10.0.0.50:6642
root@node01:~#
vi /etc/neutron/dhcp_agent.ini # 36行目 : コメント解除 dhcp_driver = neutron.agent.linux.dhcp.Dnsmasq # 45行目 : コメント解除して変更 enable_isolated_metadata = True # 60行目 : コメント解除して変更 enable_metadata_network = True
root@node01:~#
vi /etc/default/openvswitch-switch # 8行目 : コメント解除して追記 OVS_CTL_OPTS= "--ovsdb-server-options='--remote=ptcp:6640:127.0.0.1'"
root@node01:~#
vi /etc/nova/nova.conf # [DEFAULT] セクション内の適当な場所へ追記
vif_plugging_is_fatal = True
vif_plugging_timeout = 300
# 最終行へ追記 : Neutron 認証情報
# [metadata_proxy_shared_secret] の値は [neutron_ovn_metadata_agent.ini] で指定した値
[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
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| [3] | Neutron サービスを起動します。 |
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root@node01:~#
systemctl disable --now neutron-metadata-agent root@node01:~# systemctl restart openvswitch-switch ovn-controller ovn-host
root@node01:~#
root@node01:~# ln -s /etc/neutron/plugins/ml2/ml2_conf.ini /etc/neutron/plugin.ini root@node01:~# systemctl restart neutron-ovn-metadata-agent neutron-dhcp-agent root@node01:~# systemctl enable neutron-ovn-metadata-agent neutron-dhcp-agent root@node01:~# systemctl restart nova-compute
ovs-vsctl set open . external-ids:ovn-remote=tcp:10.0.0.50:6642 root@node01:~# ovs-vsctl set open . external-ids:ovn-encap-type=geneve root@node01:~# ovs-vsctl set open . external-ids:ovn-encap-ip=10.0.0.51 root@node01:~# ovs-vsctl set open . external-ids:ovn-cms-options=enable-chassis-as-gw |
| [4] | Control ノードの Nova API サービスにも設定を追記して、Neutron サービスの状態を確認します。 |
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root@dlp ~(keystone)#
vi /etc/nova/nova.conf
# 最終行へ追記：Neutron 認証情報
# [metadata_proxy_shared_secret] の値は [neutron_ovn_metadata_agent.ini] で指定した値
[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@dlp ~(keystone)#
systemctl restart apache2
# Network Agent 確認 (数十秒後に以下のように表示されれば OK) root@dlp ~(keystone)# openstack network agent list +-----------+------------+-----------+-------------------+-------+-------+--------------+ | ID | Agent Type | Host | Availability Zone | Alive | State | Binary | +-----------+------------+-----------+-------------------+-------+-------+--------------+ | 541f1ac0- | DHCP agent | network.s | nova | :-) | UP | neutron- | | ddf7- | | rv.world | | | | dhcp-agent | | 451b- | | | | | | | | b1f5- | | | | | | | | df302715f | | | | | | | | 122 | | | | | | | | a5ed6739- | DHCP agent | node01.sr | nova | :-) | UP | neutron- | | d23a- | | v.world | | | | dhcp-agent | | 465f- | | | | | | | | bbd5- | | | | | | | | da6e67d98 | | | | | | | | 98a | | | | | | | | ac815fc5- | Metadata | node01.sr | None | XXX | UP | neutron- | | 5f17- | agent | v.world | | | | metadata- | | 4a93- | | | | | | agent | | 8209- | | | | | | | | acb6c8e68 | | | | | | | | a51 | | | | | | | | 4a6bb882- | OVN | node01.sr | | :-) | UP | neutron-ovn- | | 76e5- | Metadata | v.world | | | | metadata- | | 52fc- | agent | | | | | agent | | a602- | | | | | | | | 3e14c744c | | | | | | | | a31 | | | | | | | | 7e125e30- | OVN | node01.sr | | :-) | UP | ovn- | | 4aae- | Controller | v.world | | | | controller | | 452d- | Gateway | | | | | | | 9a1e- | agent | | | | | | | de1aacaed | | | | | | | | f73 | | | | | | | +-----------+------------+-----------+-------------------+-------+-------+--------------+ |
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