The following table list a set of tcp/udp port 

https://access.redhat.com/documentation/en-us/openshift_container_platform/4.14/html/installing/deploying-installer-provisioned-clusters-on-bare-metal#network-requirements-ensuring-required-ports-are-open_ipi-install-prerequisites
    
The port 5050 is listed, but it need also port 5051 as described in the following ticket, port 6388 is also missing. : 
https://issues.redhat.com/browse/MGMT-13925



Nicholas Day added a comment - 2023/12/18 11:12 PM -

The Cause of the issue is L2 Firewall between nodes which does not allow ports 5051 and 6388.  The requirement for these ports as they are to external/node IPs needs to be added to documentation.  Seperate bug raised for documentation.

4.12  The doc does not have this tcp/udp port table, and this table is needed in 4.12  
      The doc miss tcp port 5051 which is proxied by 5050
      The doc miss tcp port 6388 which is proxied by 6385

4.13  The doc miss tcp port 5051 which is proxied by 5050
      The doc miss tcp port 6388 which is proxied by 6385      

4.14  The doc miss tcp port 5051 which is proxied by 5050 
      The doc miss tcp port 6388 which is proxied by 6385     
 
Basically, just add those two missing port in the same section : 
- tcp/5050 + tcp/5051
- tcp/6385 + tcp/6388

There is no reproducer it's a documentation issue here.
Some element in the documentation are missing.

The 4.12 has no table, and still 4.12 is still being deployed today.

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