Requirements for creating an xHA pair - BlueCat Address Manager - 8.3.1

Address Manager API Guide

prodname
BlueCat Address Manager
version_custom
8.3.1

Before you create an xHA pair in Address Manager, you must have the following requirements in place:

  • You must have at least two connected and managed DNS/DHCP Servers in the configuration.
  • DNS/DHCP Servers must be either two physical appliances or two virtual machines. Mixed xHA pairs of appliance and VM are NOT supported.
  • Both DNS/DHCP Servers must be at the same software version before creating an xHA pair.
  • Both DNS/DHCP Servers must be of the same profile, such as two DNS/DHCP Server 60 or two DNS/DHCP Server 100 profiles.
  • Both DNS/DHCP Servers must be of the same architecture, That is, two 64-bit servers, or two 32-bit servers (such as two XMB2 appliances).
    Attention: Cross-architecture xHA pairs, such as one 64-bit node and one 32-bit node, are NOT supported.
  • In order to create an xHA pair with the Active node on which the dedicated management interface enabled, the dedicated management interface on the Passive node must be enabled.
  • The Active and Passive nodes must be on the same network.
  • The servers for the xHA pair must not be associated with a deployment schedule.
  • The server intended for the passive role must not be associated with a deployment role.
  • To avoid split-brain scenarios (where both servers are active or passive at the same time), the use of xHA Backbone Communication is mandatory.
Attention:
  • If you are currently using the xHA/eth1 ports for another purpose, you can reset and then reconfigure them for xHA communication, but you cannot use the eth1 ports for xHA communication and for their previous purpose.
  • If you are upgrading from a previous version of DNS/DHCP Server, you must delete each eth1 port to reset it. This is because previous versions did not support eth1, and it is not reset automatically.