Support of host-routes and dns_nameservers via DHCP options for the Nuage Plugin
Change-Id: I65af977e368b40282753bb21677b51c1ae4f6897
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===========================================================================
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Adding support for host-routes and dns_nameservers options for Nuage Plugin
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===========================================================================
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https://blueprints.launchpad.net/neutron/+spec/dhcp-host-routes-and-dns-support-for-nuage-plugin.rst
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Adding support for host-routes and dns_nameservers options via DHCP options
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for the Nuage Plugin
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Problem description
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===================
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The current the Nuage Plugin does not support adding host routes or
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DNS nameservers via DHCP options for a Neutron subnet.
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Proposed change
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===============
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Currently the Nuage Plugin does not support Neutron's adding host routes or DNS
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nameservers via DHCP options on a subnet.
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The Nuage's VSP supports this feature and the support needs to be added in the
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plugin code.
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The following DHCP options will be supported :
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- DNS nameserver
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- Host routes
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The proposed change is to support the creation of DNS nameserver and/or Host
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routes using the Neutron DNS and Host routes
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For example:
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neutron subnet-create test 192.168.10.0/24\
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--dns_nameservers list=true 8.8.4.4 8.8.8.8
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This action will create a subnet name test with a CIDR 192.168.10.0/24.
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The nameservers 8.8.4.4 8.8.8.8 will added to this subnet, this translate to a
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subnet in the Nuage's VSP subnet with the same nameservers
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The CRUD operations will be supported by the Nuage's VSP plugin for both
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DNS nameserver and Host routes.
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Alternatives
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------------
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None
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Data model impact
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-----------------
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None
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REST API impact
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---------------
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None
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Security impact
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---------------
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None
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Notifications impact
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--------------------
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None
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Other end user impact
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---------------------
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None
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Performance Impact
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------------------
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None
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Other deployer impact
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---------------------
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None
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Developer impact
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----------------
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None
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Implementation
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==============
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The modification are required on the plugin.py
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* The new method __create_port_gateway will be created.
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This method will create a port of type network:dhcp for the current \
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subnet and tenant
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* The __validate_create_subnet method will be modified to allow the host_routes key to be a valid options of the subnet dictionary
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* The update_subnet method will be added to the plugin
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* The _create_nuage_subnet method will be merged into the create_subnet method. This will newly updated method will also create a DHCP port using the method _create_port_gateway described above.
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Assignee(s)
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-----------
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Franck Yelles
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Primary assignee:
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fyelles
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Other contributors:
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Work Items
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----------
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* Extension code in Nuage plugin
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* Nuage CI coverage addition
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* Nuage Unit tests additions, the following test units will be updated/added :
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* test_create_subnet_bad_hostroutes
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* test_update_subnet_adding_additional_host_routes_and_dns
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* test_create_subnet_with_one_host_route
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* test_create_subnet_with_two_host_routes
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* test_create_subnet_with_too_many_routes
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* test_update_subnet_route
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* test_update_subnet_route_to_None
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* test_update_subnet_route_with_too_many_entries
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* test_delete_subnet_with_route
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* test_delete_subnet_with_dns_and_route
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* test_validate_subnet_host_routes_exhausted
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* test_validate_subnet_dns_nameservers_exhausted
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Dependencies
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============
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None
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Testing
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=======
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Unit Test coverage for the DHCP options within Nuage unit test
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Nuage CI will be modified to start supporting this extension tests
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Documentation Impact
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====================
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None
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References
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==========
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None
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