如何检查我的用户数据是否传递给EC2实例？-HowtocheckwhethermyuserdatapassingtoEC2instanceworkingornot?

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You can verify using following steps

您可以使用以下步骤进行验证

1. SSH on launch EC2 instance
2. SSH启动EC2实例
3. Check log of your user data script in
   • /var/log/cloud-init.log and
   • /var/log/cloud-init.log和
   • /var/log/cloud-init-output.log
   • /var/log/cloud-init-output.log
4. 在/var/log/cloud-init.log和/var/log/cloud-init-output.log中检查用户数据脚本的日志

You can see all log's of your user data script and it will also create /etc/cloud folder.

您可以查看用户数据脚本的所有日志，还可以创建/ etc / cloud文件夹。

5  

Just for reference, you can check if the user data executed by taking a look at the system log from the EC2 console. Right click on your instance - Instance Settings - Get System log

仅供参考，您可以通过从EC2控制台查看系统日志来检查用户数据是否已执行。右键单击您的实例 - 实例设置 - 获取系统日志

This should open a modal window with the system logs

这应该打开一个带有系统日志的模态窗口

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Debugging user data scripts on Amazon EC2 is a bit awkward indeed, as there is usually no way to actively hook into the process, so one ideally would like to gain Real time access to user-data script output as summarized in Eric Hammond's article Logging user-data Script Output on EC2 Instances:

在Amazon EC2上调试用户数据脚本确实有点尴尬，因为通常没有办法主动挂钩进程，所以理想情况下想要获得对用户数据脚本输出的实时访问，如Eric Hammond的文章Logging user中所总结的那样。 EC2实例上的数据脚本输出：

The recent Ubuntu AMIs still send user-data script to the console output, so you can view it remotely, but it is no longer available in syslog on the instance. The console output is only updated a few minutes after the instance boots, reboots, or terminates, which forces you to wait to see the output of the user-data script as well as not capturing output that might come out after the snapshot.

最近的Ubuntu AMI仍然将用户数据脚本发送到控制台输出，因此您可以远程查看它，但在实例的syslog中不再可用。控制台输出仅在实例引导，重新引导或终止后几分钟更新，这会强制您等待查看用户数据脚本的输出以及不捕获快照后可能出现的输出。

Depending on your setup you might want to ship the logs to a remote logging facility like Loggly right away, but getting this installed early enough can obviously be kind of a chicken/egg problem (though it works great if the AMI happens to be configured like so already).

根据您的设置，您可能希望立即将日志发送到Loggly等远程日志记录工具，但是尽早安装它可能显然是鸡/蛋问题（尽管如果AMI恰好配置为所以已经）。

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Have your user data create a file in your ec2's /tmp directory to see if it works:

让您的用户数据在ec2的/ tmp目录中创建一个文件，看它是否有效：

bob.txt:

bob.txt：

#!/bin/sh
echo 'Woot!' > /home/ec2-user/user-script-output.txt

Then launch with:

然后启动：

ec2-run-instances -f bob.txt -t t1.micro -g ServerPolicy ami-05cf5c6d -v

ec2-run-instances -f bob.txt -t t1.micro -g ServerPolicy ami-05cf5c6d -v