current setup to cluster

[mahescho]

Hi,

I've a running setup on a single appliance and I want to add a second appliance to create a cluster. Is it possible to do this without wiping my existing setup?

TIA
Matthias

[sorano]

Yes it's possible

[mahescho]

Ok, thanks but how to do this? Is there any documentation or a howto?

[Gauss23]

It´s the same like in the docs https://docs.opnsense.org/manual/how-tos/carp.html

You´ll need to reconfigure all of your interfaces like described.

[mahescho]

Thanks, well, my intention was to avoid to rekonfiguriere all 18 interfaces :-)

What about my few hundred firewall rules? The rules are bound to interfaces ...

An option may be to get two new appliances and migrate everything, also some thing I wanted to avoid.

[sorano]

Interfaces will need to be reconfigured, there is no escaping that.

Firewall rules will still be bound to same interfaces if you do the reconfiguring correctly and will then sync to your standby host.

[Gauss23]

As you´re keeping the interfaces, the rules shouldn´t need updating.

Sometimes it´s a good idea to start over (you can restore a backup from your current box) with the second fresh box with a CARP setup in mind and after having all configured to switch to the new box. If everything is working like you wish, you take the currently running box and add it to the cluster.

In this way you don´t need two new boxes.

[mahescho]

Cool, thanks, I will give it a try.