红帽全球峰会第 13 章 网络接口绑定
本章定义了在自定义网络配置中使用的一些绑定选项。
13.1. 网络接口绑定和链路聚合控制协议(LACP)
您可以将多个物理 NIC 捆绑到一起组成一个逻辑频道，称为绑定。您可以配置绑定来为高可用性系统或增加吞吐量提供冗余。
不支持在绑定接口中使用单根 I/O 虚拟化(SR-IOV)。
Red Hat OpenStack Platform 支持 Linux 绑定、Open vSwitch (OVS)内核绑定和 OVS-DPDK 绑定。
绑定可与可选链路聚合控制协议(LACP)一起使用。LACP 是一个协商协议，可为负载平衡和容错创建动态绑定。
红帽建议使用 Linux 内核绑定(bond type: linux_bond) over OvS 内核绑定(bond type: ovs_bond)。用户模式绑定(bond type：ovs_dpdk_bond)必须与用户模式桥接(type: ovs_user_bridge)一同使用，而不是内核模式网桥(type: ovs_bridge)。但是，不要在同一节点上组合 ovs_bridge 和 ovs_user_bridge。
在控制和存储网络上，红帽建议使用带有 VLAN 和 LACP 的 Linux 绑定，因为 OVS 绑定增加了在 OVS 或 neutron 代理重启时出现 control plane 中断的可能性。Linux 绑定/LACP/VLAN 配置在不出现 OVS 中断的情况下提供 NIC 管理。
以下是一个使用 VLAN 的 Linux 绑定配置示例。
params:
$network_config:
network_config:
- type: linux_bond
name: bond_api
bonding_options: "mode=active-backup"
use_dhcp: false
dns_servers:
get_param: DnsServers
members:
- type: interface
name: nic3
primary: true
- type: interface
name: nic4
- type: vlan
vlan_id:
get_param: InternalApiNetworkVlanID
device: bond_api
addresses:
- ip_netmask:
get_param: InternalApiIpSubnet以下示例显示了将 Linux 绑定插入到 OVS 网桥中
params:
$network_config:
network_config:
- type: ovs_bridge
name: br-tenant
use_dhcp: false
mtu: 9000
members:
- type: linux_bond
name: bond_tenant
bonding_options: "mode=802.3ad updelay=1000 miimon=100"
use_dhcp: false
dns_servers:
get_param: DnsServers
members:
- type: interface
name: p1p1
primary: true
- type: interface
name: p1p2
- type: vlan
device: bond_tenant
vlan_id: {get_param: TenantNetworkVlanID}
addresses:
-
ip_netmask: {get_param: TenantIpSubnet}以下示例显示了 OVS 用户空间网桥：
params:
$network_config:
network_config:
- type: ovs_user_bridge
name: br-ex
use_dhcp: false
members:
- type: ovs_dpdk_bond
name: dpdkbond0
mtu: 2140
ovs_options: {get_param: BondInterfaceOvsOptions}
#ovs_extra:
#- set interface dpdk0 mtu_request=$MTU
#- set interface dpdk1 mtu_request=$MTU
rx_queue:
get_param: NumDpdkInterfaceRxQueues
members:
- type: ovs_dpdk_port
name: dpdk0
mtu: 2140
members:
- type: interface
name: p1p1
- type: ovs_dpdk_port
name: dpdk1
mtu: 2140
members:
- type: interface
name: p1p2
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