openstack/devstack
Code Issues Proposed changes

vxlan default ml2 tenant network type

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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
This commit is contained in:
Attila Fazekas 2014-07-27 20:47:04 +02:00
parent 5d21e0b777
commit 8feaf6c951
2 changed files with 7 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
lib/neutron
View File

@ -166,10 +166,10 @@ fi
# remote connectivity), and no physical resources will be
# available for the allocation of provider networks.
# To use GRE tunnels for tenant networks, set to True in
# ``localrc``. GRE tunnels are only supported by the openvswitch
# plugin, and currently only on Ubuntu.
ENABLE_TENANT_TUNNELS=${ENABLE_TENANT_TUNNELS:-False}
# To disable tunnels (GRE or VXLAN) for tenant networks,
# set to False in ``local.conf``.
# GRE tunnels are only supported by the openvswitch.
ENABLE_TENANT_TUNNELS=${ENABLE_TENANT_TUNNELS:-True}
# If using GRE tunnels for tenant networks, specify the range of
# tunnel IDs from which tenant networks are allocated. Can be

6
lib/neutron_plugins/ml2
View File

@ -7,9 +7,9 @@ set +o xtrace
# Enable this to simply and quickly enable tunneling with ML2.
# Select either 'gre', 'vxlan', or '(gre vxlan)'
Q_ML2_TENANT_NETWORK_TYPE=${Q_ML2_TENANT_NETWORK_TYPE:-}
Q_ML2_TENANT_NETWORK_TYPE=${Q_ML2_TENANT_NETWORK_TYPE:-"vxlan"}
# This has to be set here since the agent will set this in the config file
if [[ "$Q_ML2_TENANT_NETWORK_TYPE" != "" ]]; then
if [[ "$Q_ML2_TENANT_NETWORK_TYPE" != "local" ]]; then
Q_AGENT_EXTRA_AGENT_OPTS+=(tunnel_types=$Q_ML2_TENANT_NETWORK_TYPE)
elif [[ "$ENABLE_TENANT_TUNNELS" == "True" ]]; then
Q_AGENT_EXTRA_AGENT_OPTS+=(tunnel_types=gre)
@ -57,7 +57,7 @@ function neutron_plugin_configure_common {
}
function neutron_plugin_configure_service {
if [[ "$Q_ML2_TENANT_NETWORK_TYPE" != "" ]]; then
if [[ "$Q_ML2_TENANT_NETWORK_TYPE" != "local" ]]; then
Q_SRV_EXTRA_OPTS+=(tenant_network_types=$Q_ML2_TENANT_NETWORK_TYPE)
elif [[ "$ENABLE_TENANT_TUNNELS" == "True" ]]; then
# This assumes you want a simple configuration, and will overwrite