[lxc-users] subuids and subgid range with multiple LXC containers

[BIGOT Adrien]

Hello,

Actually hosting many containers (2000+) with OpenVZ technology, we want 
to move to LXC/LXD.
The goal is to host up to 20 unprivilegied containers per hypervisor. 
I'd like to know if there is some best practice regarding subuid and 
subgid in particular if we must have one range of subuid/subgid per 
containers or not.

For example, if I have 3 containers can I configure them with the same 
lines :
lxc.id_map = u 0 100000 65536
lxc.id_map = g 0 100000 65536

or

lxc.id_map = u 0 100000 65536
lxc.id_map = g 0 100000 65536

lxc.id_map = u 0 200000 65536
lxc.id_map = g 0 200000 65536

lxc.id_map = u 0 300000 65536
lxc.id_map = g 0 300000 65536

I didn't find any documentation about this, just a few config examples 
on the web.

Thanks in advance for your help !

-- 
  Adrien BIGOT