问题描述
我编写了一个 powershell EC2 用户数据脚本.我想知道如何使用 cfn-init.exe 向 CloudFormation 发送成功/失败信号?请提供示例和语法，因为我是 CloudFormation 的新手.
I wrote a powershell EC2 userdata script. I would like to know how to use cfn-init.exe to signal success/failure back to CloudFormation? Please provide example and syntax as I am new to CloudFormation.
推荐答案
您需要使用 cfn-signal 命令将信号传递给 cloudformation.请查看 http://docs.aws.amazon 上的文档.com/AWSCloudFormation/latest/UserGuide/cfn-signal.html
You need to use cfn-signal command for passing the signal to cloudformation.Please check the documentation at http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/cfn-signal.html
我添加了使用 cfn-signal 传递信号的 cloudformation 片段.
I have added cloudformation snippet which uses cfn-signal for passing the signal.
脚本确保 cloudformation 在实例创建前最多等待 300 秒，然后再向 cloudformation 发出故障信号.
The scripting ensures, that cloudformation waits a maximum of 300 seconds on the instance to get created, before signaling a failure back to cloudformation.
{
"AWSTemplateFormatVersion": "2010-09-09",
"Resources": {
"EC2Instance": {
"Type": "AWS::EC2::Instance",
"Properties": {
"ImageId": "<AMI>",
"InstanceType": "<Instance Type>",
"KeyName": "<Key_pair>",
"Monitoring": "false",
"UserData": {
"Fn::Base64": {
"Fn::Join": [
"",
[
"#!/bin/bash -e\n",
"yum update -y aws-cfn-bootstrap\n",
"/opt/aws/bin/cfn-signal -e 0 -r \"Failed to create Instance\" ",
{
"Ref": "WaitHandle"
},
"'\n"
]
]
}
}
}
},
"WaitHandle": {
"Type": "AWS::CloudFormation::WaitConditionHandle"
},
"WaitCondition": {
"Type": "AWS::CloudFormation::WaitCondition",
"DependsOn": "EC2Instance",
"Properties": {
"Handle": {
"Ref": "WaitHandle"
},
"Timeout": "300"
}
}
}
}
这篇关于CloudFormation cfn-init 信号用户数据脚本的成功/失败的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！