diff options
author | 2016-01-28 18:14:30 -0800 | |
---|---|---|
committer | 2016-02-17 10:49:50 -0800 | |
commit | d73d74f4be1c994ed45afb32b253faf4a2d16d74 (patch) | |
tree | c7adf6252ec65010d32fe56b7db4f003927be2c7 /puppet/controller.yaml | |
parent | b9e421ec6db97782c4b3024203e827812e87ddf3 (diff) |
Add TripleO Heat Template Parameters for Neutron Tenant MTU
This change adds the TripleO Heat Parameters and Puppet hieradata
to support setting the MTU for Neutron tenant networks. A new
parameter, NeutronTenantMtu is introduced, and this gets used for
the NeutronDnsmasqOptions and in Puppet hieradata.
NeutronTenantMtu is also used in the Puppet hieradata for both the
compute and control nodes. Two values are set:
nova::compute::network_device_mtu
which sets /etc/nova/nova.conf: network_device_mtu = <NeutronTenantMtu>
neutron::network_device_mtu
which sets in /etc/neutron/neutron.conf:
network_device_mtu = <NeutronTenantMtu>
finally, the NeutronDnsmasqOptions parameter becomes a str_format
that maps the NeutronTenantMtu onto the DHCP options,
so a default of 'dhcp-option-force=26,%MTU%' would be formatted to
'dhcp-option-force=26,1300' if NeutronTenantMtu were 1300.
This will set dnsmasq to serve an MTU via DHCP that matches the
NeutronTenantMtu:
/etc/neutron/dnsmasq-neutron.conf:dhcp-option-force=26,1300
Typically, you would change all three of these settings to use small
or jumbo frames in VMs. When using tunneling, NeutronTenantMtu
should be set at least 50 bytes smaller than the physical network
MTU in order to make room for tunneling overhead.
Note that this change does not support setting the MTU on veth
interfaces if veth patches are used to br-int instead of OVS
patches.
Change-Id: I38840e082ee01dc3b6fc78e1dd97f53fa4e63039
Diffstat (limited to 'puppet/controller.yaml')
-rw-r--r-- | puppet/controller.yaml | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/puppet/controller.yaml b/puppet/controller.yaml index ea19c711..15dbf598 100644 --- a/puppet/controller.yaml +++ b/puppet/controller.yaml @@ -492,6 +492,15 @@ parameters: default: '' description: If set, the public interface is a vlan with this device as the raw device. type: string + NeutronTenantMtu: + description: > + The default MTU for tenant networks. For VXLAN/GRE tunneling, this should + be at least 50 bytes smaller than the MTU on the physical network. This + value will be used to set the MTU on the virtual Ethernet device. + This number is related to the value of NeutronDnsmasqOptions, since that + will determine the MTU that is assigned to the VM host through DHCP. + default: 1400 + type: number NeutronTunnelTypes: default: 'vxlan' description: | @@ -1061,6 +1070,7 @@ resources: params: AGENT_EXTENSIONS: {get_param: NeutronAgentExtensions} neutron_password: {get_param: NeutronPassword} + neutron_tenant_mtu: {get_param: NeutronTenantMtu} neutron_dnsmasq_options: {get_param: NeutronDnsmasqOptions} neutron_dsn: list_join: @@ -1381,6 +1391,7 @@ resources: neutron::server::database_connection: {get_input: neutron_dsn} neutron::server::api_workers: {get_input: neutron_workers} neutron::agents::l3::external_network_bridge: {get_input: neutron_external_network_bridge} + neutron::network_device_mtu: {get_input: neutron_tenant_mtu} neutron::agents::ml2::ovs::enable_tunneling: {get_input: neutron_enable_tunneling} neutron::agents::ml2::ovs::l2_population: {get_input: neutron_enable_l2pop} neutron::agents::dhcp::enable_isolated_metadata: {get_input: neutron_enable_isolated_metadata} @@ -1465,6 +1476,7 @@ resources: nova::api::osapi_compute_workers: {get_input: nova_workers} nova::api::ec2_workers: {get_input: nova_workers} nova::api::metadata_workers: {get_input: nova_workers} + nova::compute::network_device_mtu: {get_input: neutron_tenant_mtu} nova::database_connection: {get_input: nova_dsn} nova::glance_api_servers: {get_input: glance_api_servers} nova::api::neutron_metadata_proxy_shared_secret: {get_input: neutron_metadata_proxy_shared_secret} |