Created EKS using custom AMI Launch template but nodes failed to join cluster

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**Tell us about your request**
What do you want us to build?

**Which service(s) is this request for?**
This could be Fargate, ECS, EKS, ECR

i created an custom ami launch template and with that launch template i created EKS node group but the nodes failed to join cluster
**Are you currently working around this issue? yes
How are you currently solving this problem?

**Additional context**
Anything else we should know?

**Attachments**
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The issue names a custom AMI launch template, an EKS node group, and a node-join failure, but mentions no repository files, tests, logs, or reproduction steps. Start by clarifying the AMI, launch-template configuration, bootstrap data, and join error; done would require a reproducible diagnosis or a documented roadmap change.

Written by the indexing model from the issue text.