- All guests on Host1 (and Host1) can ping eth0 and vxlan0 on Host2, and vice versa, yay.
- Guests on Host1 cannot ping guests on Host2, I suspect because the the default NAT config of the libvirt network.
So, at this point I started to search for tutorials or more information/documentation, but I am a little overwhelmed by the sheer amount of information, as well as a lot of "stale" information on blogs etc.
I have learned that I can virsh net-edit default, and then change it to an "open" network: <forward mode='open'/>
After doing this, the guests cannot reach outside their own network, nor reach the internet, so I assume that I would need to add some routes, or something else to get the network functioning like I want it. There is also
<forward mode="route"/>, but I dont fully understand the scenarios where one would need an
open or a
route forward mode. I have also shied away from using openvswitch, and have opted for ifupdown2.
(I have taken most of my inspiration from this blog post:
https://joejulian.name/post/how-to-configure-linux-vxlans-with-multiple-unicast-endpoints/ )
Some questions that I have for the mailing list, any help would be greatly appreciated:
- Is my target configuration of a KVM cluster uncommon? Do you see drawbacks of this setup, or does it go against "typical convention"?
- Would my scenario be better suited for an "
open" network or a "
route" network?
- What would be the approach to complete this setup?
