[libvirt-users] Networking issues with lxc containers in AWS EC2

[Peter Steele]

I've created an EC2 AMI for AWS that essentially represents a CentOS 7 
"hypervisor" image. I deploy instances of these in AWS and create an 
number of libvirt based lxc containers on each of these instances. The 
containers run fine within a single host and have no problem 
communicating with themselves as well as with their host, and vice 
versa. However, containers hosted in one EC2 instance cannot communicate 
with containers hosted in another EC2 instance.

We've tried various tweaks with our Amazon VPC but have been unable to 
find a way to solve this networking issue. If I use something like 
VMware or KVM and create VMs using this same hypervisor image, the 
containers running under these VMs can communicate with with each other, 
even across different hosts.

My real question is has anyone tried deploying EC2 images that host 
containers and have figured out how to successfully communicate between 
containers on different hosts?

Peter