获取当前 EC2 实例上的公共 IP 地址 [英] Get Public IP Address on current EC2 Instance

问题描述

使用 Amazon CLI，有没有办法获取当前 EC2 的公网 IP 地址?我只是在寻找单个字符串值，所以不是 json 响应 describe-addresses 返回.

Using Amazon CLI, is there a way to get the public ip address of the current EC2? I'm just looking for the single string value, so not the json response describe-addresses returns.

推荐答案

AWS 命令​​行界面 (CLI) 可用于返回任何/所有 Amazon EC2 实例的信息，例如:

The AWS Command-Line Interface (CLI) can be used to return information on any/all Amazon EC2 instances, eg:

$ aws ec2 describe-instances --instance-ids i-0c9c9b44b --query 'Reservations[*].Instances[*].PublicIpAddress' --output text

54.232.200.77

如果您正在寻找有关从中执行命令的 EC2 实例的信息，则可以通过 实例元数据服务:

If you are seeking information about the EC2 instance from which you are executing the command, then the current IP address can be obtained via the instance metadata service:

$ curl http://169.254.169.254/latest/meta-data/

ami-id
ami-launch-index
ami-manifest-path
block-device-mapping/
hostname
iam/
instance-action
instance-id
instance-type
local-hostname
local-ipv4
mac
metrics/
network/
placement/
profile
public-hostname
public-ipv4
public-keys/
reservation-id
security-groups
services/

因此，私有 IP 地址可通过以下方式获得:

So, the private IP address is available via:

$ curl http://169.254.169.254/latest/meta-data/local-ipv4

172.31.10.221

公共 IP 地址可通过以下方式获得:

$ curl http://169.254.169.254/latest/meta-data/public-ipv4

54.232.200.77

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