Attila Fazekas 8feaf6c951 vxlan default ml2 tenant network type
ovs vxlan become supported on most distribution and provides
isolated `multi tenant` networking without special `vlan` aware switch.

In single node deployment you will just see the br-tun ovs bridge
created.

In multi-node setup you might need to adjust the MTU settings.

If your physical switch supports >=1550 MTU size
 probably you will not see any issue.

If your guest image honors the MTU size offered via dhcp,
you can adjust your dnsmask settings with the correct (likely 1450 byte)
MTU size.

cirros (udhcp) does not honors these setting, you might need to
set lower MTU size on br-ex and/or adjust network_device_mtu option
in your local.conf.

The default changed, because it will be used with the multi-node neutron
jobs.

If you want the original behavior for whatever reason add these to your
`local.conf`:
ENABLE_TENANT_TUNNELS=False
Q_ML2_TENANT_NETWORK_TYPE=local

Change-Id: Id33ff0eca44905b3996618f1035ad984a6819b5b
2014-07-30 11:36:44 +02:00
..
2014-05-08 10:29:34 +00:00
ml2
2014-07-30 11:36:44 +02:00

Neutron plugin specific files

Neutron plugins require plugin specific behavior. The files under the directory, lib/neutron_plugins/, will be used when their service is enabled. Each plugin has lib/neutron_plugins/$Q_PLUGIN and define the following functions. Plugin specific configuration variables should be in this file.

  • filename: $Q_PLUGIN
    • The corresponding file name MUST be the same to plugin name $Q_PLUGIN. Plugin specific configuration variables should be in this file.

functions

lib/neutron calls the following functions when the $Q_PLUGIN is enabled

  • neutron_plugin_create_nova_conf : set NOVA_VIF_DRIVER and optionally set options in nova_conf e.g. NOVA_VIF_DRIVER=${NOVA_VIF_DRIVER:-"nova.virt.libvirt.vif.LibvirtGenericVIFDriver"}
  • neutron_plugin_install_agent_packages : install packages that is specific to plugin agent e.g. install_package bridge-utils
  • neutron_plugin_configure_common : set plugin-specific variables, Q_PLUGIN_CONF_PATH, Q_PLUGIN_CONF_FILENAME, Q_PLUGIN_CLASS
  • neutron_plugin_configure_debug_command
  • neutron_plugin_configure_dhcp_agent
  • neutron_plugin_configure_l3_agent
  • neutron_plugin_configure_plugin_agent
  • neutron_plugin_configure_service
  • neutron_plugin_setup_interface_driver
  • has_neutron_plugin_security_group: return 0 if the plugin support neutron security group otherwise return 1
  • neutron_plugin_check_adv_test_requirements: return 0 if requirements are satisfied otherwise return 1