I believe the only Centos 7 instance remaining is SCALEreg. 

---------- Forwarded message ---------
From: 'Amazon Web Services, Inc.' via aws-linuxfests <aws@linuxfests.org>
Date: Mon, Mar 4, 2024 at 12:13 PM
Subject: [Action may be required] CentOS Linux 7 end of life notification [AWS Account: 355993445259] [US-EAST-1]
To: <aws@linuxfests.org>


Hello,

Your account has been identified as having started an instance or continuing to run CentOS Linux 7 instance(s) over the last 6 months. CentOS 7 will not receive any updates after June 30, 2024 [1].

A list of your affected instance(s) can be found under the "Affected resources" tab of your AWS Health Dashboard.

It is important to take action by migrating to another Operating System before CentOS 7 reaches end of life. To understand more about the alternatives available to you to migrate your CentOS workloads on AWS, please refer to this page [2].

For any questions, please reach out to AWS Support [3].

[1] https://blog.centos.org/2023/04/end-dates-are-coming-for-centos-stream-8-and-centos-linux-7/
[2] https://aws.amazon.com/linux/commercial-linux/centos/
[3] https://aws.amazon.com/support

Sincerely,
Amazon Web Services

Amazon Web Services, Inc. is a subsidiary of Amazon.com, Inc. Amazon.com is a registered trademark of Amazon.com, Inc. This message was produced and distributed by Amazon Web Services Inc., 410 Terry Ave. North, Seattle, WA 98109-5210

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Reference: https://health.aws.amazon.com/health/home?region=us-east-1#/event-log?eventID=arn:aws:health:us-east-1::event/EC2/AWS_EC2_PLANNED_LIFECYCLE_EVENT/AWS_EC2_PLANNED_LIFECYCLE_EVENT_31096a797d35c936a01b44f1440be5ab948e0a2098b91493401de8932235b289&amp;eventTab=details