OpenStack Epoxy : Configure Neutron OVN (Compute Node)

Configure OpenStack Network Service (Neutron). This example is based on the environment like follows. Configure Neutron services with Open Virtual Network (OVN). ------------+--------------------------+--------------------------+------------ | | | 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]	Install Neutron services on Compute Node.

root@node01:~#  apt -y install neutron-common neutron-plugin-ml2 neutron-ovn-metadata-agent neutron-dhcp-agent ovn-host openvswitch-switch

[2]	Configure Neutron services.

root@node01:~#  mv /etc/neutron/neutron.conf /etc/neutron/neutron.conf.org root@node01:~#  vi /etc/neutron/neutron.conf # create new [DEFAULT] core_plugin = ml2 service_plugins = ovn-router auth_strategy = keystone state_path = /var/lib/neutron allow_overlapping_ips = True # RabbitMQ connection info transport_url = rabbit://openstack:password@dlp.srv.world [agent] root_helper = sudo /usr/bin/neutron-rootwrap /etc/neutron/rootwrap.conf # Keystone auth info [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 # if using self-signed certs on Apache2 Keystone, turn to [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 # create new [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] # IP address of Network node 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] # line 2 : add # specify Nova API host nova_metadata_host = dlp.srv.world nova_metadata_protocol = https # specify any secret key you like metadata_proxy_shared_secret = metadata_secret # line 235 : add the line [ovs] ovsdb_connection = tcp:127.0.0.1:6640 # add to last line [agent] root_helper = sudo neutron-rootwrap /etc/neutron/rootwrap.conf [ovn] # IP address of Network node ovn_sb_connection = tcp:10.0.0.50:6642 root@node01:~#  vi /etc/neutron/dhcp_agent.ini # line 12 : confirm interface_driver = openvswitch # line 31 : uncomment dhcp_driver = neutron.agent.linux.dhcp.Dnsmasq # line 37 : confirm enable_isolated_metadata = True # line 47 : uncomment and change enable_metadata_network =  True root@node01:~#  vi /etc/default/openvswitch-switch # line 8 : uncomment and add OVS_CTL_OPTS= "--ovsdb-server-options='--remote=ptcp:6640:127.0.0.1'" root@node01:~#  vi /etc/nova/nova.conf # add into [DEFAULT] section vif_plugging_is_fatal = True vif_plugging_timeout = 300 # add to last line : Neutron auth info # the value of [metadata_proxy_shared_secret] is the same with the one in [neutron_ovn_metadata_agent.ini] [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

[3]	Start Neutron services.

root@node01:~#  systemctl restart openvswitch-switch ovn-controller ovn-host 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 root@node01:~#  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]	Add settings on Control Node and verify status of Neutron services.

root@dlp ~(keystone)#  vi /etc/nova/nova.conf # add to last line : Neutron auth info # the value of [metadata_proxy_shared_secret] is the same with the one in [neutron_ovn_metadata_agent.ini] [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 nova-api # verify status (OK if following output is displayed after a few seconds) root@dlp ~(keystone)#  openstack network agent list +---------------------+---------------------+-------------------+-------------------+-------+-------+----------------------+ | ID | Agent Type | Host | Availability Zone | Alive | State | Binary | +---------------------+---------------------+-------------------+-------------------+-------+-------+----------------------+ | 78eece1a-989a-41d7- | DHCP agent | node01.srv.world | nova | :-) | UP | neutron-dhcp-agent | | 9999-e776547feb02 | | | | | | | | ea614782-798a-49f7- | DHCP agent | network.srv.world | nova | :-) | UP | neutron-dhcp-agent | | b6b3-c90206dcd0fb | | | | | | | | 76108f4a-4af8-466e- | OVN Controller | node01.srv.world | | :-) | UP | ovn-controller | | b440-97363718ab2b | Gateway agent | | | | | | | 399eb2f2-1d91-5df3- | OVN Metadata agent | node01.srv.world | | XXX | UP | neutron-ovn- | | aa06-9d2c89fde4b3 | | | | | | metadata-agent | +---------------------+---------------------+-------------------+-------------------+-------+-------+----------------------+

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