OpenStack Flamingo : Neutron OVN 設定 (Network 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 |
+-----------------------+ +-----------------------+ +-----------------------+
|
| [1] |
こちらを参考に Control ノード の Keystone に Neutron
用のユーザー/エンドポイントやデータベース等々を登録しておきます。 |
| [2] | こちらの [3] を参考に OpenStack Flamingo リポジトリを追加して、Network 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@network:~# apt -y install neutron-server neutron-plugin-ml2 neutron-dhcp-agent python3-neutronclient ovn-central openvswitch-switch apache2 libapache2-mod-wsgi-py3 nginx libnginx-mod-stream
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| [3] | Neutron Server の設定です。 |
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root@network:~# mv /etc/neutron/neutron.conf /etc/neutron/neutron.conf.org
root@network:~#
vi /etc/neutron/neutron.conf # 新規作成 [DEFAULT] bind_host = 127.0.0.1 bind_port = 9696 core_plugin = ml2 service_plugins = ovn-router auth_strategy = keystone state_path = /var/lib/neutron allow_overlapping_ips = True notify_nova_on_port_status_changes = True notify_nova_on_port_data_changes = True # RabbitMQ 接続情報 transport_url = rabbit://openstack:password@dlp.srv.world:5672 [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 [database] connection = mysql+pymysql://neutron:password@dlp.srv.world:3306/neutron_ml2 [nova] 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 = nova 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/tmp [oslo_policy] enforce_new_defaults = true
root@network:~#
chmod 640 /etc/neutron/neutron.conf root@network:~# chgrp neutron /etc/neutron/neutron.conf
root@network:~#
mv /etc/neutron/plugins/ml2/ml2_conf.ini /etc/neutron/plugins/ml2/ml2_conf.ini.org root@network:~# 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@network:~#
chmod 640 /etc/neutron/plugins/ml2/ml2_conf.ini root@network:~# chgrp neutron /etc/neutron/plugins/ml2/ml2_conf.ini
root@network:~#
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@network:~#
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@network:~#
vi /etc/apache2/sites-enabled/neutron-api.conf # 1行目 : 変更 Listen 127.0.0.1:9696
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| [4] | ネットワークノード用の SSL/TLS 証明書を取得 または 自己署名の証明書を作成して、Nginx にプロキシの設定をします。 |
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root@network:~# unlink /etc/nginx/sites-enabled/default
root@network:~#
vi /etc/nginx/nginx.conf # 最終行に追記
stream {
upstream neutron-api {
server 127.0.0.1:9696;
}
server {
listen 10.0.0.50:9696 ssl;
proxy_pass neutron-api;
}
ssl_certificate "/etc/letsencrypt/live/network.srv.world/fullchain.pem";
ssl_certificate_key "/etc/letsencrypt/live/network.srv.world/privkey.pem";
}
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| [5] | Neutron サービスを起動します。 |
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root@network:~#
systemctl disable --now neutron-metadata-agent root@network:~# systemctl restart openvswitch-switch root@network:~# ovs-vsctl add-br br-int
root@network:~#
ln -s /etc/neutron/plugins/ml2/ml2_conf.ini /etc/neutron/plugin.ini root@network:~# su -s /bin/bash neutron -c "neutron-db-manage --config-file /etc/neutron/neutron.conf --config-file /etc/neutron/plugin.ini upgrade head"
root@network:~#
root@network:~# systemctl restart ovn-central ovn-northd root@network:~# ovn-nbctl set-connection ptcp:6641:10.0.0.50 -- set connection . inactivity_probe=60000 root@network:~# ovn-sbctl set-connection ptcp:6642:10.0.0.50 -- set connection . inactivity_probe=60000 root@network:~# ovs-vsctl set open . external-ids:ovn-cms-options=enable-chassis-as-gw
a2enmod wsgi root@network:~# systemctl restart nginx root@network:~# systemctl restart neutron-dhcp-agent apache2
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