开始使用 P5 实例和 EFA - Amazon Elastic Compute Cloud

开始使用 P5 实例和 EFA

P5 实例通过使用多个 EFA 接口提供 3200Gbps 的网络带宽。P5 实例支持 32 个网卡。有关 P5 实例入门的更多信息，请参阅 开始使用 P5 实例。

建议您为每个网卡定义单个 EFA 网络接口。要在启动时配置这些接口，建议进行以下设置：

  • 对于网络接口 0，指定设备索引 0

  • 对于网络接口 1 至 31，指定设备索引 1

如果您使用的是 Amazon EC2 控制台，请在启动实例向导的网络设置部分中选择编辑。展开高级网络配置，然后选择添加网络接口以添加所需数量的网络接口。对于每个网络接口的 EFA，选择启用。对于除主网络接口之外的所有网络接口，将设备索引指定为 1。根据需要配置剩余设置。

如果您使用 AWS CLI，则请使用 run-instances 命令将 --network-interfaces 指定为所需的网络接口数量。对于每个网络接口，将 InterfaceType 指定为 efa。对于主网络接口，将 NetworkCardIndex 和 DeviceIndex 指定为 0。对于其余的网络接口，将 NetworkCardIndex 指定为 1 到 31 之间的唯一值，将 DeviceIndex 指定为 1。

以下示例命令片段显示具有 32 个 EFA 网络接口的请求。

$ aws --region $REGION ec2 run-instances \
 --instance-type p5.48xlarge \
 --count 1 \
 --key-name key_pair_name \
 --image-id ami_id \
 --network-interfaces "NetworkCardIndex=0,DeviceIndex=0,Groups=security_group_id,SubnetId=subnet_id,InterfaceType=efa" \
                      "NetworkCardIndex=1,DeviceIndex=1,Groups=security_group_id,SubnetId=subnet_id,InterfaceType=efa" \
                      "NetworkCardIndex=2,DeviceIndex=1,Groups=security_group_id,SubnetId=subnet_id,InterfaceType=efa" \
                      "NetworkCardIndex=3,DeviceIndex=1,Groups=security_group_id,SubnetId=subnet_id,InterfaceType=efa" \
                      "NetworkCardIndex=4,DeviceIndex=1,Groups=security_group_id,SubnetId=subnet_id,InterfaceType=efa" \
                      "NetworkCardIndex=5,DeviceIndex=1,Groups=security_group_id,SubnetId=subnet_id,InterfaceType=efa" \
                      "NetworkCardIndex=6,DeviceIndex=1,Groups=security_group_id,SubnetId=subnet_id,InterfaceType=efa" \
                      "NetworkCardIndex=7,DeviceIndex=1,Groups=security_group_id,SubnetId=subnet_id,InterfaceType=efa" \
                      "NetworkCardIndex=8,DeviceIndex=1,Groups=security_group_id,SubnetId=subnet_id,InterfaceType=efa" \
                      "NetworkCardIndex=9,DeviceIndex=1,Groups=security_group_id,SubnetId=subnet_id,InterfaceType=efa" \
                      "NetworkCardIndex=10,DeviceIndex=1,Groups=security_group_id,SubnetId=subnet_id,InterfaceType=efa" \
                      "NetworkCardIndex=11,DeviceIndex=1,Groups=security_group_id,SubnetId=subnet_id,InterfaceType=efa" \
                      "NetworkCardIndex=12,DeviceIndex=1,Groups=security_group_id,SubnetId=subnet_id,InterfaceType=efa" \
                      "NetworkCardIndex=13,DeviceIndex=1,Groups=security_group_id,SubnetId=subnet_id,InterfaceType=efa" \
                      "NetworkCardIndex=14,DeviceIndex=1,Groups=security_group_id,SubnetId=subnet_id,InterfaceType=efa" \
                      "NetworkCardIndex=15,DeviceIndex=1,Groups=security_group_id,SubnetId=subnet_id,InterfaceType=efa" \
                      "NetworkCardIndex=16,DeviceIndex=1,Groups=security_group_id,SubnetId=subnet_id,InterfaceType=efa" \
                      "NetworkCardIndex=17,DeviceIndex=1,Groups=security_group_id,SubnetId=subnet_id,InterfaceType=efa" \
                      "NetworkCardIndex=18,DeviceIndex=1,Groups=security_group_id,SubnetId=subnet_id,InterfaceType=efa" \
                      "NetworkCardIndex=19,DeviceIndex=1,Groups=security_group_id,SubnetId=subnet_id,InterfaceType=efa" \
                      "NetworkCardIndex=20,DeviceIndex=1,Groups=security_group_id,SubnetId=subnet_id,InterfaceType=efa" \
                      "NetworkCardIndex=21,DeviceIndex=1,Groups=security_group_id,SubnetId=subnet_id,InterfaceType=efa" \
                      "NetworkCardIndex=22,DeviceIndex=1,Groups=security_group_id,SubnetId=subnet_id,InterfaceType=efa" \
                      "NetworkCardIndex=23,DeviceIndex=1,Groups=security_group_id,SubnetId=subnet_id,InterfaceType=efa" \
                      "NetworkCardIndex=24,DeviceIndex=1,Groups=security_group_id,SubnetId=subnet_id,InterfaceType=efa" \
                      "NetworkCardIndex=25,DeviceIndex=1,Groups=security_group_id,SubnetId=subnet_id,InterfaceType=efa" \
                      "NetworkCardIndex=26,DeviceIndex=1,Groups=security_group_id,SubnetId=subnet_id,InterfaceType=efa" \
                      "NetworkCardIndex=27,DeviceIndex=1,Groups=security_group_id,SubnetId=subnet_id,InterfaceType=efa" \
                      "NetworkCardIndex=28,DeviceIndex=1,Groups=security_group_id,SubnetId=subnet_id,InterfaceType=efa" \
                      "NetworkCardIndex=29,DeviceIndex=1,Groups=security_group_id,SubnetId=subnet_id,InterfaceType=efa" \
                      "NetworkCardIndex=30,DeviceIndex=1,Groups=security_group_id,SubnetId=subnet_id,InterfaceType=efa" \
                      "NetworkCardIndex=31,DeviceIndex=1,Groups=security_group_id,SubnetId=subnet_id,InterfaceType=efa"
...

如果您使用的是启动模板，则请在启动模板中指定所需的网络接口数量。对于每个网络接口，将 InterfaceType 指定为 efa。对于主网络接口，将 NetworkCardIndex 和 DeviceIndex 指定为 0。对于其余的网络接口，将 NetworkCardIndex 指定为 1 到 31 之间的唯一值，将 DeviceIndex 指定为 1。以下代码段显示可能的 32 个网络接口中 3 个网络接口的示例。

"NetworkInterfaces":[
{
  "NetworkCardIndex":0,
  "DeviceIndex":0,
  "InterfaceType": "efa",
  "AssociatePublicIpAddress":false,
  "Groups":[
    "security_group_id"
  ],
  "DeleteOnTermination":true
},
{
  "NetworkCardIndex": 1,
  "DeviceIndex": 1,
  "InterfaceType": "efa",
  "AssociatePublicIpAddress":false,
  "Groups":[
    "security_group_id"
  ],
  "DeleteOnTermination":true
},
{
  "NetworkCardIndex": 2,
  "DeviceIndex": 1,
  "InterfaceType": "efa",
  "AssociatePublicIpAddress":false,
  "Groups":[
    "security_group_id"
  ],
  "DeleteOnTermination":true
}
...

启动具有多个网络接口的 P5 实例时，您无法自动分配公有 IP 地址。但是，您可以在启动后将弹性 IP 地址连接到主网络接口（NetworkCardIndex=0, DeviceIndex=0）以实现互联网连接。Ubuntu 20.04 及更高版本以及 Amazon Linux 2 及更高版本，均配置为按照上述建议，在启动实例时使用主网络接口传输互联网流量。