anchor.diff:  | *53*
   |Provides DNS services.
   
  +| *2049*
  +|Required when provisioning an NFS host as part of the installer.
  +
   | *2379*
   |Used for standalone etcd (clustered) to accept changes in state.
   
  
positive.code: SELINUXTYPE=targeted
  ----
  
  [[host-preparation]]
  
  == Host Preparation
  
negative.code: 
  | *4789*
  |Required for SDN communication between pods on separate hosts.
  
  | *5404* or *5405*
  |UDP ports associated with Corosync and used with `*pacemaker*` HA.
  
  | *9000*
  |If you choose the `*native*` HA method, optional to allow access to the HAProxy statistics page.
  
  
  |===
  