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OpenStack Zed : Neutron OVN 設定 (Network ノード)2022/11/10
 
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。
リンク先では Neutron Server (API) を Control ノード にインストールする前提の例となっていますが、
当例では Neutron Server を Network ノード にインストールします。
よって、当例での Neutron のエンドポイントは [10.0.0.50] となります。
[2] Network ノードに Neutron Server をインストールします。
# Zed, EPEL, CRB からインストール

[root@network ~]#
dnf --enablerepo=centos-openstack-zed,epel,crb -y install openstack-neutron openstack-neutron-ml2 ovn-2021-central nginx nginx-mod-stream
[3] Neutron Server の設定です。
[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

# 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
# httpd 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/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
# httpd 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
[root@network ~]#
chmod 640 /etc/neutron/neutron.conf

[root@network ~]#
chgrp neutron /etc/neutron/neutron.conf
[root@network ~]#
vi /etc/neutron/plugins/ml2/ml2_conf.ini
# 最終行へ追記

[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 ~]#
vi /etc/sysconfig/openvswitch
# 28行目 : 追記

OPTIONS="
--ovsdb-server-options='--remote=ptcp:6640:127.0.0.1'
"
[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。
[root@network ~]#
mv /etc/nginx/nginx.conf /etc/nginx/nginx.conf.org

[root@network ~]#
vi /etc/nginx/nginx.conf
# 新規作成

user nginx;
worker_processes auto;
error_log /var/log/nginx/error.log;
pid /run/nginx.pid;
include /usr/share/nginx/modules/*.conf;
events {
    worker_connections 1024;
}
http {
    log_format  main  '$remote_addr - $remote_user [$time_local] "$request" '
                      '$status $body_bytes_sent "$http_referer" '
                      '"$http_user_agent" "$http_x_forwarded_for"';
    access_log  /var/log/nginx/access.log  main;
    sendfile            on;
    tcp_nopush          on;
    tcp_nodelay         on;
    keepalive_timeout   65;
    types_hash_max_size 2048;
    include             /etc/nginx/mime.types;
    default_type        application/octet-stream;
    include /etc/nginx/conf.d/*.conf;
}

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";
}
[5] SELinux を有効にしている場合は、ポリシーの変更が必要です。
[root@network ~]#
dnf --enablerepo=centos-openstack-zed -y install openstack-selinux

[root@network ~]#
setsebool -P neutron_can_network on

[root@network ~]#
setsebool -P haproxy_connect_any on

[root@network ~]#
setsebool -P daemons_enable_cluster_mode on

[root@network ~]#
vi ovsofctl.te
# 以下の内容で新規作成

module ovsofctl 1.0;

require {
        type neutron_t;
        type neutron_exec_t;
        type dnsmasq_t;
        type tracefs_t;
        type openvswitch_load_module_t;
        type var_run_t;
        type openvswitch_t;
        type ovsdb_port_t;
        type dmesg_exec_t;
        type ping_exec_t;
        type ssh_exec_t;
        type ssh_keygen_exec_t;
        type crontab_exec_t;
        type dbusd_exec_t;
        type thumb_exec_t;
        type systemd_notify_exec_t;
        type keepalived_exec_t;
        type lsmd_plugin_exec_t;
        type gpg_agent_exec_t;
        type hostname_exec_t;
        type passwd_exec_t;
        type systemd_tmpfiles_exec_t;
        type rpmdb_exec_t;
        type systemd_hwdb_exec_t;
        type virt_qemu_ga_exec_t;
        type journalctl_exec_t;
        type conmon_exec_t;
        type locate_exec_t;
        type traceroute_exec_t;
        type mount_exec_t;
        type lsmd_exec_t;
        type policykit_auth_exec_t;
        type vlock_exec_t;
        type chronyc_exec_t;
        type ssh_agent_exec_t;
        type su_exec_t;
        type loadkeys_exec_t;
        type mandb_exec_t;
        type systemd_passwd_agent_exec_t;
        type gpg_exec_t;
        type checkpolicy_exec_t;
        type systemd_systemctl_exec_t;
        type devicekit_exec_t;
        type plymouth_exec_t;
        type chfn_exec_t;
        type rsync_exec_t;
        type NetworkManager_exec_t;
        type container_runtime_exec_t;
        type groupadd_exec_t;
        type kdumpctl_exec_t;
        type login_exec_t;
        type fusermount_exec_t;
        type httpd_t;
        class tcp_socket { name_bind name_connect };
        class sock_file write;
        class file { execute_no_trans getattr };
        class dir search;
        class capability { dac_override sys_rawio };
}

#============= neutron_t ==============
allow neutron_t self:capability { dac_override sys_rawio };
allow neutron_t neutron_exec_t:file execute_no_trans;
allow neutron_t NetworkManager_exec_t:file getattr;
allow neutron_t checkpolicy_exec_t:file getattr;
allow neutron_t chfn_exec_t:file getattr;
allow neutron_t chronyc_exec_t:file getattr;
allow neutron_t conmon_exec_t:file getattr;
allow neutron_t container_runtime_exec_t:file getattr;
allow neutron_t crontab_exec_t:file getattr;
allow neutron_t dbusd_exec_t:file getattr;
allow neutron_t devicekit_exec_t:file getattr;
allow neutron_t dmesg_exec_t:file getattr;
allow neutron_t fusermount_exec_t:file getattr;
allow neutron_t gpg_agent_exec_t:file getattr;
allow neutron_t gpg_exec_t:file getattr;
allow neutron_t groupadd_exec_t:file getattr;
allow neutron_t hostname_exec_t:file getattr;
allow neutron_t journalctl_exec_t:file getattr;
allow neutron_t kdumpctl_exec_t:file getattr;
allow neutron_t keepalived_exec_t:file getattr;
allow neutron_t loadkeys_exec_t:file getattr;
allow neutron_t locate_exec_t:file getattr;
allow neutron_t login_exec_t:file getattr;
allow neutron_t lsmd_exec_t:file getattr;
allow neutron_t lsmd_plugin_exec_t:file getattr;
allow neutron_t mandb_exec_t:file getattr;
allow neutron_t mount_exec_t:file getattr;
allow neutron_t passwd_exec_t:file getattr;
allow neutron_t ping_exec_t:file getattr;
allow neutron_t plymouth_exec_t:file getattr;
allow neutron_t policykit_auth_exec_t:file getattr;
allow neutron_t rpmdb_exec_t:file getattr;
allow neutron_t rsync_exec_t:file getattr;
allow neutron_t ssh_agent_exec_t:file getattr;
allow neutron_t ssh_exec_t:file getattr;
allow neutron_t ssh_keygen_exec_t:file getattr;
allow neutron_t su_exec_t:file getattr;
allow neutron_t systemd_hwdb_exec_t:file getattr;
allow neutron_t systemd_notify_exec_t:file getattr;
allow neutron_t systemd_passwd_agent_exec_t:file getattr;
allow neutron_t systemd_systemctl_exec_t:file getattr;
allow neutron_t systemd_tmpfiles_exec_t:file getattr;
allow neutron_t thumb_exec_t:file getattr;
allow neutron_t traceroute_exec_t:file getattr;
allow neutron_t virt_qemu_ga_exec_t:file getattr;
allow neutron_t vlock_exec_t:file getattr;

#============= openvswitch_t ==============
allow openvswitch_t var_run_t:sock_file write;
allow openvswitch_t ovsdb_port_t:tcp_socket name_bind;

#============= openvswitch_load_module_t ==============
allow openvswitch_load_module_t tracefs_t:dir search;

#============= dnsmasq_t ==============
allow dnsmasq_t self:capability dac_override;
[root@network ~]#
checkmodule -m -M -o ovsofctl.mod ovsofctl.te

[root@network ~]#
semodule_package --outfile ovsofctl.pp --module ovsofctl.mod

[root@network ~]#
semodule -i ovsofctl.pp

[6] Firewalld を有効にしている場合は、サービスポートの許可が必要です。
[root@network ~]#
firewall-cmd --add-port={9696/tcp,6641/tcp,6642/tcp}

success
[root@network ~]#
firewall-cmd --runtime-to-permanent

success
[7] Neutron サービスを起動します。
[root@network ~]#
systemctl enable --now openvswitch

[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 ~]#
systemctl enable --now 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 ~]#
systemctl enable --now neutron-server nginx
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