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While creating new AWS EC2 instance using the EC2 command line API, I am passing some user data to the new instance.

Now how I came to know whether that user data executed or not?

How should I check it?

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Follow these steps to verify:

1. SSH on the launch EC2 instance

2. You can check the log of your user data script in these paths:

  • /var/log/cloud-init.log and

  • /var/log/cloud-init-output.log

Now, you can see all of your log’s of user data script. A /etc/cloud directory will also be created.

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