Live/HA migrate and DHCP

[jdl]

Hello,
I have a 3 nodes HA cluster running PVE4.1, hosted by online.net (french hosting provider).
Each node has two interface, one public and one private, and they are not in the same subnet on the public side.
The VMs running on a node have a virtual public network, totally different from the network of the physical server, but they have to be configured with a /32 netmask and use the gateway of the physical server.
This behavior is enforced by the hosting provider and i can't change it.
So when one VM migrate from one physical server to another, if this VM use a static IP configuration, the gateway does not match with the one that should be used on the second physical server, and traffic is stopped.
I'm currently trying a DHCP approach, I would like a HA-enabled VM to issue a DHCP request when it live-migrates to another node, is it possible ?
Thanks

 

[t.lamprecht]

Hi,

You could make a second bridge on all nodes with the same IP on every node (e.g. 10.10.10.1) then the VM could use that as gateway and doesn't really need to care where it is running at the moment.
I only thought it through quickly but it should work.