Under normal operation, xHA automatically fails over in the event of a hardware, network or service failure related to the Active node. However, you can perform a manual xHA failover for maintenance or verification purposes.
Warning: BlueCat advises
customers to never perform a manual xHA failover immediately after modifying the
network and interface configurations of an xHA pair (such as the xHA backbone,
additional IP service addresses, or VLAN interfaces). Doing so can result in loss of
the modified data. If the manual xHA failover must be performed after changing
interface or network configurations, allow several minutes for the data to
synchronize between the Active and Passive nodes of an xHA pair before performing
manual xHA failover. For more information, refer to the Knowledge Base article https://care.bluecatnetworks.com/kA540000000L1KR on BlueCat Customer Care.
When you perform an xHA failover manually, the roles of the servers in the xHA pair are reversed: the Passive server becomes the Active node, and the formerly active server becomes the Passive node.
If a server is disconnected, the Failover function is unavailable for use.
To perform an xHA failover: