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failover configuration in a virtualized environment

Solved681 views21st November 2024Agent failover configuration virtual machines
1
Fares Alidelbi95 21st May 2024 2 Comments

Hello,

We are trying to setup a failover cluster using two agents installed on virtual machines. Could somebody share with us the best way to configure the IP addresses of these virtual machines before setting up the cluster? Currently the they have one IP address.

For instance, do we need two subnets for the corporate and acquisition networks or only one subnet is enough?

Thanks,

Marieke Goethals [SLC] [DevOps Catalyst] Selected answer as best 21st November 2024
Marieke Goethals [SLC] [DevOps Catalyst] commented 27th September 2024

I see that this question has been inactive for some time. Do you still need help with this? If not, could you select Michiel’s answer (using the ✓ icon) to indicate that the question is resolved?

Marieke Goethals [SLC] [DevOps Catalyst] commented 21st November 2024

As this question has now been inactive for a very long time, I will close it. If you still want more information about this, could you post a new question?

2 Answers

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Michiel Saelen [SLC] [DevOps Enabler]5.63K Posted 22nd May 2024 0 Comments

You can find most of the information in our docs: Configuring Failover | DataMiner Docs

It is recommended to have them in the same subnet to allow the use of a VIP which is assigned to the active DMA by DataMiner. This way you communicate directly to the active DMA by using the VIP. So every DMA has its own IP and the active one has additionally the VIP assigned by DataMiner. If you need two separate subnets, you can work with hostnames. It is more complex to configure (you need to configure DNS records). With hostnames you don't know if you are going to connect to the active or passive, but you will be redirected to the active one if you initially connected to the passive one (extra network latency).

Marieke Goethals [SLC] [DevOps Catalyst] Selected answer as best 21st November 2024
0
Fares Alidelbi95 Posted 22nd May 2024 1 Comment

Hi Michiel,

Thanks for your reply.

Based on you reply I believe having the below scenario would work well, right?

DMA1:

corporate  10.10.10.1

acquisition 10.10.10.31

DMA2:

corporate  10.10.10.2

acquisition 10.10.10.32

VIPs:

corporate  10.10.10.3

acquisition 10.10.10.33

In this example, both the corporate and acquisition IPs are in the same network. The acquisition IPs can be reached by any machine in the network and it is not isolated as they are meant to be when configuring them on physical machines using a cross cable.

Michiel Saelen [SLC] [DevOps Enabler] Posted new comment 27th August 2024
Michiel Saelen [SLC] [DevOps Enabler] commented 27th August 2024

Sorry for the late reply, did not notice your message as it was posted as a new answer. If you have no need to split corporate and acquisition traffic, you can also only configure one IP address (corporate) instead of both. DataMiner will connect to other IP addresses based on the routing table of the server, so could be that even if you configure two IFs that everything is going through the same.

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