[lxc-users] LAN for LXD containers (with multiple LXD servers)?

[Tomasz Chmielewski]

It's easy to create a "LAN" for LXD containers on a single LXD server - 
just attach them to the same bridge, use the same subnet (i.e. 
10.10.10.0/24) - done. Containers can communicate with each other using 
their private IP address.

However, with more then one LXD server *not* in the same LAN (i.e. two 
LXD servers in different datacentres), the things get tricky.


Is anyone using such setups, with multiple LXD servers and containers 
being able to communicate with each other?


LXD1: IP 1.2.3.4, Europe    LXD2: IP 2.3.4.5, Asia
container1, 10.10.10.10     container4, 10.10.10.20
container2, 10.10.10.11     container5, 10.10.10.21
container3, 10.10.10.12     container6, 10.10.10.22


LXD3: IP 3.4.5.6, US
container7, 10.10.10.30
container8, 10.10.10.31
container8, 10.10.10.32


While I can imagine setting up many OpenVPN tunnels between all LXD 
servers (LXD1-LXD2, LXD1-LXD3, LXD2-LXD3) and constantly adjusting the 
routes as containers are stopped/started/migrated, it's a bit of a 
management nightmare. And even more so if the number of LXD servers 
grows.

Hints, discussion?


Tomasz Chmielewski
https://lxadm.com