What advanced parameter defines a custom isolation IP address for a vSphere HA cluster?
A.
das.usedefaultisolationaddress
B.
das.isolationshutdowntimeout
C.
fdm.isolationpolicydelaysec
D.
das.isolationaddress
Explanation:
https://kb.vmware.com/kb/1002117
Is D
https://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=2033250
Tweaking is done mainly using these 2 parameter
das.useDefaultIsolationAddress (true/false):
Whether the default isolation address (gateway of management network) should be used when determining if a host is network isolated. Valid values are true/false. By default, the management network default gateway is used. If the default gateway is a non-pingable address, set the “das.isolationaddressX” to a pingable address and disable the usage of the default gateway by setting this option to “false”.
Then you assign a custom pingable IP address using “das.isolationAddressX” :
IP addresses an FDM agent uses to check for isolation when no agent network traffic is observed on the network(*) used by HA, where X = 0-9. HA will use the default management-network gateway as an isolation address by default plus those specified by this advanced option as additional addresses to check. We recommend adding an isolation address for each management network used by HA.