Cannot confirm for the 9.0, according to the Alex Didenko's comment: Please also note that this solution is needed for 8.0 only. In 9.0 we have new feature for manual VIPs allocation [1]. So in 9.0, if we can't auto allocate VIPs for some cluster configuration, we can simply ask user to manually set those problem VIPs or move roles to the same network node group (rack).
Cannot confirm for the 9.0, according to the Alex Didenko's comment: Please also note that this solution is needed for 8.0 only. In 9.0 we have new feature for manual VIPs allocation [1]. So in 9.0, if we can't auto allocate VIPs for some cluster configuration, we can simply ask user to manually set those problem VIPs or move roles to the same network node group (rack).