Hi There,
It's now possible to setup failover with a hostname instead of virtual IP. Does this mean that the two Dataminer agents in failover configuration can be in different IP sub networks ?
Yes, because there is no more virtual IP to acquire, the two agents can be in different subnets. The feature was designed for two agents running in different AWS availability zones (which can only span one subnet). So running a DMA in each of the 2 subnets (or availability zones in the image below), should be allowed:
Thanks for your answers.
How can we be sure that the DNS server will redirect the traffic to the active DMA and not the failover one ?
What about traps, how the devices can send traps to the DMA without using a virtual address ?
Instead of a virtual IP you will have a shared hostname. This can be done in two ways:
- Add both IPs to the DNS server with the same hostname, so the client retrieves both IPs when resolving the hostname.
- Adjust the hosts file on the client PC. This is done in case there's no DNS server on the network.
You can check the result of the action on the client by executing following action in PowerShell. The result should show the 2 IPs.
[System.Net.Dns]::GetHostEntry("hostnameGoesHere")