How do I add user data to CloudFormation?

Copy the code as you go through the topics below.

Create Security Group.
Install Apache web server on the instance.
Add the WebsiteURL to CloudFormation Outputs.
Update the Stack.

Where can I find user data logs?

Check the log of your user data script in:

/var/log/cloud-init. log and.
/var/log/cloud-init-output. log.

How do I check my CloudFormation log?

If stack creation fails, go to the CloudFormation Resources list in the AWS Management Console to find the log group. Note that if stack creation fails before any instances are launched, a log group might not be created. By default, AWS deletes CloudWatch log groups if stack creation fails.

What is metadata in CloudFormation?

Metadata keys Defines configuration tasks for the cfn-init helper script. This script is useful for configuring and installing applications on EC2 instances. For more information, see AWS::CloudFormation::Init .

How do I attach an instance profile to EC2 using CloudFormation?

You will also see, how to attach existing IAM role to an EC2 instance using CloudFormation….Create a stack using template and verify

Login to AWS Management Console, navigate to CloudFormation and click on Create stack.
Click on “Upload a template file”, upload ec2instance.yml or ec2instance.json and click Next.

What is user data in AWS EC2?

AWS userdata is the set of commands/data you can provide to a instance at launch time. For example if you are launching an ec2 instance and want to have docker installed on the newly launched ec2, than you can provide set of bash commands in the userdata field of aws ec2 config page.

How do I find my EC2 instance logs?

Open the Amazon EC2 console at https://console.aws.amazon.com/ec2/.

In the left navigation pane, choose Instances, and select the instance.
Go to Actions > Instance Settings > Get System Log.
This will open another window where it is possible to highlight all the log output and paste it to a notepad.

How do I access my CloudWatch log stream?

To view log data Open the CloudWatch console at https://console.aws.amazon.com/cloudwatch/ . In the navigation pane, choose Log groups. For Log Groups, choose the log group to view the streams. In the list of log groups, choose the name of the log group that you want to view.

What is the difference between cloud formation CF and terraform?

While CloudFormation is confined to the services offered by AWS, Terraform spans across multiple Cloud Service Providers like AWS, Azure, Google Cloud Platform, and many more, Terraform covers most of the AWS resources.

How do I make EC2 user data script run again on startup?

You can put your script in /etc/rc. local, which will run the script on every reboot. /etc/rc. local has nothing to do with EC2 user data.

Does user data run on each boot?

By default, user data scripts and cloud-init directives run only during the first boot cycle when an EC2 instance is launched. However, you can configure your user data script and cloud-init directives with a mime multi-part file.