183c82b59a
This patch updates our install documentation to account for the fact that linux systems must have net.bridge sysctl knobs. Change-Id: I8b65e2ef22d57cd6c501f25a33af8c1900f20497 Closes-Bug: #1672922
351 lines
9.0 KiB
ReStructuredText
351 lines
9.0 KiB
ReStructuredText
Networking Option 2: Self-service networks
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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Install and configure the Networking components on the *controller* node.
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Install the components
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----------------------
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.. code-block:: console
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# apt install neutron-server neutron-plugin-ml2 \
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neutron-linuxbridge-agent neutron-l3-agent neutron-dhcp-agent \
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neutron-metadata-agent
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.. end
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Configure the server component
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------------------------------
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* Edit the ``/etc/neutron/neutron.conf`` file and complete the following
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actions:
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* In the ``[database]`` section, configure database access:
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.. path /etc/neutron/neutron.conf
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.. code-block:: ini
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[database]
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# ...
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connection = mysql+pymysql://neutron:NEUTRON_DBPASS@controller/neutron
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.. end
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Replace ``NEUTRON_DBPASS`` with the password you chose for the
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database.
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.. note::
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Comment out or remove any other ``connection`` options in the
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``[database]`` section.
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* In the ``[DEFAULT]`` section, enable the Modular Layer 2 (ML2)
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plug-in, router service, and overlapping IP addresses:
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.. path /etc/neutron/neutron.conf
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.. code-block:: ini
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[DEFAULT]
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# ...
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core_plugin = ml2
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service_plugins = router
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allow_overlapping_ips = true
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.. end
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* In the ``[DEFAULT]`` section, configure ``RabbitMQ``
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message queue access:
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.. path /etc/neutron/neutron.conf
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.. code-block:: ini
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[DEFAULT]
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# ...
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transport_url = rabbit://openstack:RABBIT_PASS@controller
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.. end
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Replace ``RABBIT_PASS`` with the password you chose for the
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``openstack`` account in RabbitMQ.
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* In the ``[DEFAULT]`` and ``[keystone_authtoken]`` sections, configure
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Identity service access:
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.. path /etc/neutron/neutron.conf
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.. code-block:: ini
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[DEFAULT]
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# ...
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auth_strategy = keystone
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[keystone_authtoken]
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# ...
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auth_uri = http://controller:5000
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auth_url = http://controller:35357
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memcached_servers = controller:11211
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auth_type = password
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project_domain_name = default
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user_domain_name = default
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project_name = service
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username = neutron
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password = NEUTRON_PASS
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.. end
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Replace ``NEUTRON_PASS`` with the password you chose for the ``neutron``
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user in the Identity service.
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.. note::
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Comment out or remove any other options in the
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``[keystone_authtoken]`` section.
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* In the ``[DEFAULT]`` and ``[nova]`` sections, configure Networking to
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notify Compute of network topology changes:
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.. path /etc/neutron/neutron.conf
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.. code-block:: ini
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[DEFAULT]
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# ...
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notify_nova_on_port_status_changes = true
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notify_nova_on_port_data_changes = true
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[nova]
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# ...
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auth_url = http://controller:35357
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auth_type = password
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project_domain_name = default
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user_domain_name = default
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region_name = RegionOne
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project_name = service
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username = nova
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password = NOVA_PASS
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.. end
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Replace ``NOVA_PASS`` with the password you chose for the ``nova``
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user in the Identity service.
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Configure the Modular Layer 2 (ML2) plug-in
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-------------------------------------------
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The ML2 plug-in uses the Linux bridge mechanism to build layer-2 (bridging
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and switching) virtual networking infrastructure for instances.
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* Edit the ``/etc/neutron/plugins/ml2/ml2_conf.ini`` file and complete the
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following actions:
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* In the ``[ml2]`` section, enable flat, VLAN, and VXLAN networks:
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.. path /etc/neutron/plugins/ml2/ml2_conf.ini
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.. code-block:: ini
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[ml2]
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# ...
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type_drivers = flat,vlan,vxlan
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.. end
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* In the ``[ml2]`` section, enable VXLAN self-service networks:
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.. path /etc/neutron/plugins/ml2/ml2_conf.ini
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.. code-block:: ini
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[ml2]
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# ...
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tenant_network_types = vxlan
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.. end
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* In the ``[ml2]`` section, enable the Linux bridge and layer-2 population
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mechanisms:
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.. path /etc/neutron/plugins/ml2/ml2_conf.ini
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.. code-block:: ini
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[ml2]
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# ...
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mechanism_drivers = linuxbridge,l2population
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.. end
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.. warning::
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After you configure the ML2 plug-in, removing values in the
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``type_drivers`` option can lead to database inconsistency.
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.. note::
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The Linux bridge agent only supports VXLAN overlay networks.
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* In the ``[ml2]`` section, enable the port security extension driver:
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.. path /etc/neutron/plugins/ml2/ml2_conf.ini
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.. code-block:: ini
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[ml2]
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# ...
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extension_drivers = port_security
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.. end
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* In the ``[ml2_type_flat]`` section, configure the provider virtual
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network as a flat network:
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.. path /etc/neutron/plugins/ml2/ml2_conf.ini
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.. code-block:: ini
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[ml2_type_flat]
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# ...
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flat_networks = provider
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.. end
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* In the ``[ml2_type_vxlan]`` section, configure the VXLAN network identifier
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range for self-service networks:
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.. path /etc/neutron/plugins/ml2/ml2_conf.ini
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.. code-block:: ini
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[ml2_type_vxlan]
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# ...
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vni_ranges = 1:1000
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.. end
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* In the ``[securitygroup]`` section, enable ipset to increase
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efficiency of security group rules:
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.. path /etc/neutron/plugins/ml2/ml2_conf.ini
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.. code-block:: ini
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[securitygroup]
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# ...
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enable_ipset = true
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.. end
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Configure the Linux bridge agent
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--------------------------------
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The Linux bridge agent builds layer-2 (bridging and switching) virtual
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networking infrastructure for instances and handles security groups.
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* Edit the ``/etc/neutron/plugins/ml2/linuxbridge_agent.ini`` file and
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complete the following actions:
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* In the ``[linux_bridge]`` section, map the provider virtual network to the
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provider physical network interface:
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.. path /etc/neutron/plugins/ml2/linuxbridge_agent.ini
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.. code-block:: ini
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[linux_bridge]
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physical_interface_mappings = provider:PROVIDER_INTERFACE_NAME
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.. end
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Replace ``PROVIDER_INTERFACE_NAME`` with the name of the underlying
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provider physical network interface. See :doc:`environment-networking-ubuntu`
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for more information.
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* In the ``[vxlan]`` section, enable VXLAN overlay networks, configure the
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IP address of the physical network interface that handles overlay
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networks, and enable layer-2 population:
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.. path /etc/neutron/plugins/ml2/linuxbridge_agent.ini
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.. code-block:: ini
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[vxlan]
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enable_vxlan = true
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local_ip = OVERLAY_INTERFACE_IP_ADDRESS
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l2_population = true
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.. end
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Replace ``OVERLAY_INTERFACE_IP_ADDRESS`` with the IP address of the
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underlying physical network interface that handles overlay networks. The
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example architecture uses the management interface to tunnel traffic to
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the other nodes. Therefore, replace ``OVERLAY_INTERFACE_IP_ADDRESS`` with
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the management IP address of the controller node. See
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:doc:`environment-networking-ubuntu` for more information.
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* In the ``[securitygroup]`` section, enable security groups and
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configure the Linux bridge iptables firewall driver:
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.. path /etc/neutron/plugins/ml2/linuxbridge_agent.ini
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.. code-block:: ini
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[securitygroup]
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# ...
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enable_security_group = true
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firewall_driver = neutron.agent.linux.iptables_firewall.IptablesFirewallDriver
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.. end
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* Ensure your Linux operating system kernel supports network bridge filters
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by verifying all the following ``sysctl`` values are set to ``1``:
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.. code-block:: ini
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net.bridge.bridge-nf-call-iptables
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net.bridge.bridge-nf-call-ip6tables
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.. end
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To enable networking bridge support, typically the ``br_netfilter`` kernel
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module needs to be loaded. Check your operating system's documentation for
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additional details on enabling this module.
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Configure the layer-3 agent
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---------------------------
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The Layer-3 (L3) agent provides routing and NAT services for
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self-service virtual networks.
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* Edit the ``/etc/neutron/l3_agent.ini`` file and complete the following
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actions:
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* In the ``[DEFAULT]`` section, configure the Linux bridge interface driver
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and external network bridge:
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.. path /etc/neutron/l3_agent.ini
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.. code-block:: ini
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[DEFAULT]
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# ...
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interface_driver = linuxbridge
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.. end
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Configure the DHCP agent
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------------------------
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The DHCP agent provides DHCP services for virtual networks.
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* Edit the ``/etc/neutron/dhcp_agent.ini`` file and complete the following
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actions:
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* In the ``[DEFAULT]`` section, configure the Linux bridge interface driver,
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Dnsmasq DHCP driver, and enable isolated metadata so instances on provider
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networks can access metadata over the network:
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.. path /etc/neutron/dhcp_agent.ini
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.. code-block:: ini
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[DEFAULT]
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# ...
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interface_driver = linuxbridge
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dhcp_driver = neutron.agent.linux.dhcp.Dnsmasq
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enable_isolated_metadata = true
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.. end
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Return to *Networking controller node configuration*.
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