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blimmer committed Aug 30, 2024
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6 changes: 5 additions & 1 deletion _posts/2024-08-30-aws-batch-launch-configurations.md
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description: "TODO"
---

{% include tldr.html content='If you created an AWS Batch Compute Environment using the <code>BEST_FIT</code> Allocation Strategy before April 2024, it will use Launch Configurations. Recreate the Compute Environment to upgrade to Launch Templates.' %}
{% include tldr.html content='If you created an AWS Batch Compute Environment using the <a href="https://docs.aws.amazon.com/batch/latest/userguide/allocation-strategies.html"><code>BEST_FIT</code> Allocation Strategy</a> before April 2024, it will use Launch Configurations. Recreate the Compute Environment to upgrade to Launch Templates.' %}

## AWS Batch Launch Configurations Deprecation

Expand Down Expand Up @@ -61,6 +61,10 @@ When I looked into the Launch Configurations I had defined, I was surprised to s
CloudFormation stack attached. After some digging, I realized that these auto-scaling groups and Launch Configurations
were associated with AWS Batch.

<div class='center mt-3 mb-3'>
<img src="{{ site.base_url }}/{% ministamp _images/posts/2024/08/lc-auto-scaling-groups.png assets/images/posts/2024/08/lc-auto-scaling-groups.png %}" alt="AWS Auto-Scaling Groups using legacy Launch Configurations" />
</div>

When you create a Compute Environment via CloudFormation, AWS Batch creates the auto-scaling groups and Launch
Configurations automatically, but does not propagate tags from the parent resources managed by CloudFormation. This can
make it difficult to figure out where they came from.
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