如何在用户数据中获取 AWS 实例标签? [英] How can I get AWS Instance Tags in user-data?

问题描述

我将 aws ec2 userdata 与 windows powershell 脚本一起使用.我需要实例引导.我的想法是:

I use aws ec2 userdata with windows powershell scripts. I need instance bootstrapping. My idea is:

• 添加EC2实例标签.键名Version"，值1.0.0.158-branchname"

我试图在用户数据中获取版本标记值.我检查了 aws http api.它不能返回标签.我写了简单的 powershell 脚本:

I have tried to get version tag value in userdata. I checked aws http api. It can't return tags. I wrote simple powershell scripts:

$instanceId = (New-Object System.Net.WebClient).DownloadString("http://169.254.169.254/latest/meta-data/instance-id")
aws ec2 describe-tags --filters $filter --query 'Tags[*]'

我可以使用 aws http api 获取实例 ID.我无法获取实例标签，因为 AWS ec2 用户数据无法启动aws.exe".

I can get instance Id with aws http api. I can't get instance tags because AWS ec2 userdata can't start "aws.exe".

这个脚本是正确的——它是在实例启动之前手动运行的.

This script is correct - it is manually run before the instance is started.

注意:aws"是aws.exe"(https://aws.amazon.com/cli/)

Note: "aws" is "aws.exe" (https://aws.amazon.com/cli/)

推荐答案

我解决了，我的问题是使用 aws cli .我使用 powershell api 并修复它.

I resolve it, my problem is using aws cli . I use powershell api and fix it.

$instanceId = (New-Object System.Net.WebClient).DownloadString("http://169.254.169.254/latest/meta-data/instance-id")
$versionTag =  Get-EC2Tag | ` Where-Object {$_.ResourceId -eq $instanceId -and $_.Key -eq 'Version'}

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