=======================
Neutron Network Service
=======================

Neutron is an OpenStack project to provide "networking as a service" between
interface devices (e.g., vNICs) managed by other Openstack services (e.g.,
nova).

Starting in the Folsom release, Neutron is a core and supported part of the
OpenStack platform (for Essex, we were an "incubated" project, which means use
is suggested only for those who really know what they're doing with Neutron). 

Sample pillars
==============

Neutron Server on the controller node

.. code-block:: yaml

    neutron:
      server:
        enabled: true
        version: mitaka
        allow_pagination: true
        pagination_max_limit: 100
        bind:
          address: 172.20.0.1
          port: 9696
        database:
          engine: mysql
          host: 127.0.0.1
          port: 3306
          name: neutron
          user: neutron
          password: pwd
        identity:
          engine: keystone
          host: 127.0.0.1
          port: 35357
          user: neutron
          password: pwd
          tenant: service
        message_queue:
          engine: rabbitmq
          host: 127.0.0.1
          port: 5672
          user: openstack
          password: pwd
          virtual_host: '/openstack'
        metadata:
          host: 127.0.0.1
          port: 8775
          password: pass
        audit:
          enabled: false

Note: The pagination is useful to retrieve a large bunch of resources,
because a single request may fail (timeout). This is enabled with both
parameters *allow_pagination* and *pagination_max_limit* as shown above.


Neutron VXLAN tenant networks with Network Nodes (with DVR for East-West
 and Network node for North-South)
=========================================================================
===================================

This use case describes a model utilising VxLAN overlay with DVR. The DVR
 routers will only be utilized for traffic that is router within the cloud
  infrastructure and that remains encapsulated. External traffic will be 
  routed to via the network nodes. 

The intention is that each tenant will require at least two (2) vrouters 
one to be utilised 

Neutron Server only
-------------------

.. code-block:: yaml

    neutron:
      server:
        version: mitaka
        plugin: ml2
        bind:
          address: 172.20.0.1
          port: 9696
        database:
          engine: mysql
          host: 127.0.0.1
          port: 3306
          name: neutron
          user: neutron
          password: pwd
        identity:
          engine: keystone
          host: 127.0.0.1
          port: 35357
          user: neutron
          password: pwd
          tenant: service
        message_queue:
          engine: rabbitmq
          host: 127.0.0.1
          port: 5672
          user: openstack
          password: pwd
          virtual_host: '/openstack'
        global_physnet_mtu: 9000
        l3_ha: False # Which type of router will be created by default
        dvr: True # disabled for non DVR use case
        backend:
          engine: ml2
          tenant_network_types: "flat,vxlan"
          external_mtu: 9000
          mechanism:
            ovs:
              driver: openvswitch

Network Node only
-----------------

.. code-block:: yaml

    neutron:
      gateway:
        enabled: True
        version: mitaka
        message_queue:
          engine: rabbitmq
          host: 127.0.0.1
          port: 5672
          user: openstack
          password: pwd
          virtual_host: '/openstack'
        local_ip: 192.168.20.20 # br-mesh ip address
        dvr: True # disabled for non DVR use case
        agent_mode: dvr_snat
        metadata:
          host: 127.0.0.1
          password: pass
        backend:
          engine: ml2
          tenant_network_types: "flat,vxlan"
          mechanism:
            ovs:
              driver: openvswitch  

Compute Node
-------------

.. code-block:: yaml

    neutron:
      compute:
        enabled: True
        version: mitaka
        message_queue:
          engine: rabbitmq
          host: 127.0.0.1
          port: 5672
          user: openstack
          password: pwd
          virtual_host: '/openstack'
        local_ip: 192.168.20.20 # br-mesh ip address
        dvr: True # disabled for non DVR use case
        agent_mode: dvr
        external_access: false # Compute node with DVR for east-west only, Network Node has True as default
        metadata:
          host: 127.0.0.1
          password: pass       
        backend:
          engine: ml2
          tenant_network_types: "flat,vxlan"
          mechanism:
            ovs:
              driver: openvswitch
        audit:
          enabled: false

Neutron VXLAN tenant networks with Network Nodes (non DVR)
==========================================================

This section describes a network solution that utilises VxLAN overlay
 networks without DVR with all routers being managed on the network nodes.

Neutron Server only
-------------------

.. code-block:: yaml

    neutron:
      server:
        version: mitaka
        plugin: ml2
        bind:
          address: 172.20.0.1
          port: 9696
        database:
          engine: mysql
          host: 127.0.0.1
          port: 3306
          name: neutron
          user: neutron
          password: pwd
        identity:
          engine: keystone
          host: 127.0.0.1
          port: 35357
          user: neutron
          password: pwd
          tenant: service
        message_queue:
          engine: rabbitmq
          host: 127.0.0.1
          port: 5672
          user: openstack
          password: pwd
          virtual_host: '/openstack'
        global_physnet_mtu: 9000
        l3_ha: True
        dvr: False
        backend:
          engine: ml2
          tenant_network_types= "flat,vxlan"
          external_mtu: 9000
          mechanism:
            ovs:
              driver: openvswitch

Network Node only
-----------------

.. code-block:: yaml

    neutron:
      gateway:
        enabled: True
        version: mitaka
        message_queue:
          engine: rabbitmq
          host: 127.0.0.1
          port: 5672
          user: openstack
          password: pwd
          virtual_host: '/openstack'
        local_ip: 192.168.20.20 # br-mesh ip address
        dvr: False
        agent_mode: legacy
        metadata:
          host: 127.0.0.1
          password: pass
        backend:
          engine: ml2
          tenant_network_types: "flat,vxlan"
          mechanism:
            ovs:
              driver: openvswitch  

Compute Node
-------------

.. code-block:: yaml

    neutron:
      compute:
        enabled: True
        version: mitaka
        message_queue:
          engine: rabbitmq
          host: 127.0.0.1
          port: 5672
          user: openstack
          password: pwd
          virtual_host: '/openstack'
        local_ip: 192.168.20.20 # br-mesh ip address
        external_access: False
        dvr: False      
        backend:
          engine: ml2
          tenant_network_types: "flat,vxlan"
          mechanism:
            ovs:
              driver: openvswitch

Neutron VXLAN tenant networks with Network Nodes (with DVR for 
East-West and North-South, DVR everywhere, Network node for SNAT)
==============================================================
========================================================

This section describes a network solution that utilises VxLAN 
overlay networks with DVR with North-South and East-West. Network 
Node is used only for SNAT.

Neutron Server only
-------------------

.. code-block:: yaml

    neutron:
      server:
        version: mitaka
        plugin: ml2
        bind:
          address: 172.20.0.1
          port: 9696
        database:
          engine: mysql
          host: 127.0.0.1
          port: 3306
          name: neutron
          user: neutron
          password: pwd
        identity:
          engine: keystone
          host: 127.0.0.1
          port: 35357
          user: neutron
          password: pwd
          tenant: service
        message_queue:
          engine: rabbitmq
          host: 127.0.0.1
          port: 5672
          user: openstack
          password: pwd
          virtual_host: '/openstack'
        global_physnet_mtu: 9000
        l3_ha: False
        dvr: True
        backend:
          engine: ml2
          tenant_network_types= "flat,vxlan"
          external_mtu: 9000
          mechanism:
            ovs:
              driver: openvswitch

Network Node only
-----------------

.. code-block:: yaml

    neutron:
      gateway:
        enabled: True
        version: mitaka
        message_queue:
          engine: rabbitmq
          host: 127.0.0.1
          port: 5672
          user: openstack
          password: pwd
          virtual_host: '/openstack'
        local_ip: 192.168.20.20 # br-mesh ip address
        dvr: True
        agent_mode: dvr_snat
        metadata:
          host: 127.0.0.1
          password: pass
        backend:
          engine: ml2
          tenant_network_types: "flat,vxlan"
          mechanism:
            ovs:
              driver: openvswitch  

Compute Node
-------------

.. code-block:: yaml

    neutron:
      compute:
        enabled: True
        version: mitaka
        message_queue:
          engine: rabbitmq
          host: 127.0.0.1
          port: 5672
          user: openstack
          password: pwd
          virtual_host: '/openstack'
        local_ip: 192.168.20.20 # br-mesh ip address
        dvr: True
        external_access: True     
        agent_mode: dvr
        metadata:
          host: 127.0.0.1
          password: pass
        backend:
          engine: ml2
          tenant_network_types: "flat,vxlan"
          mechanism:
            ovs:
              driver: openvswitch

Sample Linux network configuration for DVR
--------------------------------------------

.. code-block:: yaml

    linux:
      network:
        bridge: openvswitch
        interface:
          eth1:
            enabled: true
            type: eth
            mtu: 9000
            proto: manual
          eth2:
            enabled: true
            type: eth
            mtu: 9000
            proto: manual
          eth3:
            enabled: true
            type: eth
            mtu: 9000
            proto: manual
          br-int:
            enabled: true
            mtu: 9000
            type: ovs_bridge
          br-floating:
            enabled: true
            mtu: 9000
            type: ovs_bridge
          float-to-ex:
            enabled: true
            type: ovs_port
            mtu: 65000
            bridge: br-floating
          br-mgmt:
            enabled: true
            type: bridge
            mtu: 9000
            address: ${_param:single_address}
            netmask: 255.255.255.0
            use_interfaces:
            - eth1
          br-mesh:
            enabled: true
            type: bridge
            mtu: 9000
            address: ${_param:tenant_address}
            netmask: 255.255.255.0
            use_interfaces:
            - eth2
          br-ex:
            enabled: true
            type: bridge
            mtu: 9000
            address: ${_param:external_address}
            netmask: 255.255.255.0
            use_interfaces:
            - eth3
            use_ovs_ports:
            - float-to-ex

Neutron VLAN tenant networks with Network Nodes
===============================================

VLAN tenant provider

Neutron Server only
-------------------

.. code-block:: yaml

    neutron:
      server:
        version: mitaka
        plugin: ml2
        ...
        global_physnet_mtu: 9000
        l3_ha: False
        dvr: True
        backend:
          engine: ml2
          tenant_network_types: "flat,vlan" # Can be mixed flat,vlan,vxlan
          tenant_vlan_range: "1000:2000"
          external_vlan_range: "100:200" # Does not have to be defined.
          external_mtu: 9000
          mechanism:
            ovs:
              driver: openvswitch

Compute node
-------------------

.. code-block:: yaml

    neutron:
      compute:
        version: mitaka
        plugin: ml2
        ...
        dvr: True
        agent_mode: dvr
        external_access: False
        backend:
          engine: ml2
          tenant_network_types: "flat,vlan" # Can be mixed flat,vlan,vxlan
          mechanism:
            ovs:
              driver: openvswitch

Neutron OVS SR-IOV
==================

.. code-block:: yaml

    neutron:
      server:
        version: mitaka
        plugin: ml2
        backend:
          engine: ml2
          ...
          mechanism:
            ovs:
              driver: openvswitch
            sriov:
              driver: sriovnicswitch

    neutron:
      compute:
        version: mitaka
        plugin: ml2
        ...
        backend:
          engine: ml2
          tenant_network_types: "flat,vlan" # Can be mixed flat,vlan,vxlan
          sriov:
            nic_one:
              devname: eth1
              physical_network: physnet3
          mechanism:
            ovs:
              driver: openvswitch

Neutron Server with OpenContrail
==================================

.. code-block:: yaml

    neutron:
      server:
        plugin: contrail
        backend:
          engine: contrail
          host: contrail_discovery_host
          port: 8082
          user: admin
          password: password
          tenant: admin
          token: token

Neutron Server with Midonet
===========================

.. code-block:: yaml

    neutron:
      server:
        backend:
          engine: midonet
          host: midonet_api_host
          port: 8181
          user: admin
          password: password

Other
=====

Neutron Keystone region

.. code-block:: yaml

    neutron:
      server:
        enabled: true
        version: kilo
        ...
        identity:
          region: RegionTwo
        ...
        compute:
          region: RegionTwo
        ...


Client-side RabbitMQ HA setup

.. code-block:: yaml

    neutron:
      server:
        ....
        message_queue:
          engine: rabbitmq
          members:
            - host: 10.0.16.1
            - host: 10.0.16.2
            - host: 10.0.16.3
          user: openstack
          password: pwd
          virtual_host: '/openstack'
        ....

Enable auditing filter, ie: CADF

.. code-block:: yaml

    neutron:
      server:
        audit:
          enabled: true
      ....
          filter_factory: 'keystonemiddleware.audit:filter_factory'
          map_file: '/etc/pycadf/neutron_api_audit_map.conf'
      ....
      compute:
        audit:
          enabled: true
      ....
          filter_factory: 'keystonemiddleware.audit:filter_factory'
          map_file: '/etc/pycadf/neutron_api_audit_map.conf'
      ....


Client role
-----------

Neutron networks

.. code-block:: yaml

    neutron:
      client:
        enabled: true
        server:
          identity:
            network:
              inet1:
                tenant: demo
                shared: False
                admin_state_up: True
                router_external: True
                provider_physical_network: inet
                provider_network_type: flat
                provider_segmentation_id: 2
                subnet:
                  inet1-subnet1:
                    cidr: 192.168.90.0/24
                    enable_dhcp: False
              inet2:
                tenant: admin
                shared: False
                router_external: True
                provider_network_type: "vlan"
                subnet:
                  inet2-subnet1:
                    cidr: 192.168.92.0/24
                    enable_dhcp: False
                  inet2-subnet2:
                    cidr: 192.168.94.0/24
                    enable_dhcp: True
          identity1:
            network:
              ...


Neutron routers

.. code-block:: yaml

    neutron:
      client:
        enabled: true
        server:
          identity:
            router:
              inet1-router:
                tenant: demo
                admin_state_up: True
                gateway_network: inet
                interfaces:
                  - inet1-subnet1
                  - inet1-subnet2
          identity1:
            router:
              ...

    TODO: implement adding new interfaces to a router while updating it


Neutron security groups

.. code-block:: yaml

    neutron:
      client:
        enabled: true
        server:
          identity:
            security_group:
              security_group1:
                tenant: demo
                description: security group 1
                rules:
                  - direction: ingress
                    ethertype: IPv4
                    protocol: TCP
                    port_range_min: 1
                    port_range_max: 65535
                    remote_ip_prefix: 0.0.0.0/0
                  - direction: ingress
                    ethertype: IPv4
                    protocol: UDP
                    port_range_min: 1
                    port_range_max: 65535
                    remote_ip_prefix: 0.0.0.0/0
                  - direction: ingress
                    protocol: ICMP
                    remote_ip_prefix: 0.0.0.0/0
          identity1:
            security_group:
              ...

    TODO: implement updating existing security rules (now it adds new rule if trying to update existing one)


Floating IP addresses

.. code-block:: yaml

    neutron:
      client:
        enabled: true
        server:
          identity:
            floating_ip:
              prx01-instance:
                server: prx01.mk22-lab-basic.local
                subnet: private-subnet1
                network: public-net1
                tenant: demo
              gtw01-instance:
                ...

.. note:: The network must have flag router:external set to True.
          Instance port in the stated subnet will be associated with the dynamically generated floating IP.


Usage
=====

Fix RDO Neutron installation

.. code-block:: yaml

    neutron-db-manage --config-file /usr/share/neutron/neutron-dist.conf --config-file /etc/neutron/neutron.conf --config-file /etc/neutron/plugin.ini stamp havana

Documentation and Bugs
============================

To learn how to deploy OpenStack Salt, consult the documentation available
online at:

    https://wiki.openstack.org/wiki/OpenStackSalt

In the unfortunate event that bugs are discovered, they should be reported to
the appropriate bug tracker. If you obtained the software from a 3rd party
operating system vendor, it is often wise to use their own bug tracker for
reporting problems. In all other cases use the master OpenStack bug tracker,
available at:

    http://bugs.launchpad.net/openstack-salt

Developers wishing to work on the OpenStack Salt project should always base
their work on the latest formulas code, available from the master GIT
repository at:

    https://git.openstack.org/cgit/openstack/salt-formula-neutron

Developers should also join the discussion on the IRC list, at:

    https://wiki.openstack.org/wiki/Meetings/openstack-salt

Documentation and Bugs
======================

To learn how to install and update salt-formulas, consult the documentation
available online at:

    http://salt-formulas.readthedocs.io/

In the unfortunate event that bugs are discovered, they should be reported to
the appropriate issue tracker. Use Github issue tracker for specific salt
formula:

    https://github.com/salt-formulas/salt-formula-neutron/issues

For feature requests, bug reports or blueprints affecting entire ecosystem,
use Launchpad salt-formulas project:

    https://launchpad.net/salt-formulas

You can also join salt-formulas-users team and subscribe to mailing list:

    https://launchpad.net/~salt-formulas-users

Developers wishing to work on the salt-formulas projects should always base
their work on master branch and submit pull request against specific formula.

    https://github.com/salt-formulas/salt-formula-neutron

Any questions or feedback is always welcome so feel free to join our IRC
channel:

    #salt-formulas @ irc.freenode.net