How is ROSA or OSD affected by AWS CLB deprecation?
Environment
- Red Hat OpenShift Service on AWS (ROSA)
- 4
- Red Hat OpenShift Dedicated (OSD)
- 4
- AWS Classic Load Balancer (CLB)
- AWS EC2 Classic
Issue
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- With the announcement of AWS deprecating EC2 Classic, Classic Load Balancers (CLB), customers are concerned how this may affect ROSA or OSD clusters. AWS is retiring EC2-Classic on August 15, 2022.
Resolution
Customers of Red Hat OpenShift Service on AWS and Red Hat OpenShift Dedicated are not affected by this EC2 Classic, Classic Load Balancer deprecation, as it only affects EC2-Classic instances without a VPC.
Customers of ROSA and OSD don't need to take any action as all ROSA and OSD instances use a VPC and use modern EC2.
For reference:
Root Cause
AWS is retiring EC2-Classic on August 15, 2022.
Diagnostic Steps
To see that the region where the cluster is installed does not have EC2-classic functionality, query for classic link instances, using the aws
CLI in the same region as the cluster:
$ aws ec2 describe-classic-link-instances
An error occurred (UnsupportedOperation) when calling the DescribeClassicLinkInstances operation: The functionality you requested is not available in this region.
The above message indicates that it is not EC2-Classic.
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