(CfnInstance)

[sonaliks]

Describe the issue

The "CfnInstance" Construct documentation[1] does not define how to specify 'MetaData' for the instance. And the "addMetadata(key, value)" construct can have only key-pair values while the instance metadata has to be quite large.

The solution that worked is using "addOverride" function:

As per Link[2] you can make use of "addOverride" function to add metadata to a 'CfnInstance' construct. An example[3] is as follows:

---

asgLaunchConfig.addOverride("Metadata", {
"AWS::CloudFormation::Init": {
"FOO": "BAR",
}
});

However ask from Service team:

1. Kindly add a method in CDK "CfnInstance" construct to be able to add large metadata. this is apart from "addMetadata" method.
2. If the "addOverride" should be the only method then kindly update the documentation[1] and mention this as this is not properly documented and is a common usecase.

[1] https://docs.aws.amazon.com/cdk/api/v2/docs/aws-cdk-lib.aws_ec2.CfnInstance.html
[2] https://docs.aws.amazon.com/cdk/api/v2/docs/aws-cdk-lib.aws_ec2.CfnInstance.html#addwbrmetadatakey-value
[3] #5087
[4] #777

Links

NA

[pahud]

dup #25885

[github-actions]

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