[lxc-users] nat networking with fixed (dhcp ) IP addresses

[Michel Jansens]

Hi all,

I’m running lxd 3.0.0 on Ubuntu 18.04 and I would like to use NAT/bridge networking for most containers, but with the possibility to fix the IP address myself (to ease some cluster config in Ansible).

I’ve tried many things and read a lot around, but didn’t find anything that works.

I tried "lxc config device set mycontainer eth0 ipv4.address 10.25.240.139”  it returns: Error: The device doesn't exist  (source: https://blog.ubuntu.com/2017/02/14/network-management-with-lxd-2-3 <https://blog.ubuntu.com/2017/02/14/network-management-with-lxd-2-3>)

The lxdbr0 bridged network is inherited by the container from the ‘default profile’ and lxdbr0 config is:

lxc network show lxdbr0
config:
  dns.mode: dynamic
  ipv4.address: 10.115.240.1/24
  ipv4.dhcp.ranges: 10.115.240.2-10.115.240.100
  ipv4.nat: "true"
  ipv6.address: fd3f:a1a8:9bb:fb1e::1/64
description: ""
name: lxdbr0
type: bridge

If I check "lxc network list-leases lxdbr0” all IP adresses are “DYNAMIC” should it be changed to static somewhere?

Is there a way to tell lxd’s dhcp server what IP to use for a specific container?


Thanks for any help.

Cheers,

Michel




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