The CA API Gateway Policy Manager has seen changes in underlying Operating System Support since 8.x and 9.x as Gateway 10.x has become the officially supported version
Release : 10.x
Component : CA API Gateway Policy Manager
The supported Operating Systems for the Gateway 10.x Policy Manager are as follows:
Windows
MacOS
(Redhat is no longer a supported OS platform for the CA API Gateway Policy Manager in version 10.1)
Requirements and Compatibility:
https://techdocs.broadcom.com/us/en/ca-enterprise-software/layer7-api-management/api-gateway/10-1/release-notes/requirements-and-compatibility.html