Bootstrap LXD based Juju Controller
Canonical OpenStack clouds deployed using the manual bare metal provider requires a local
LXD Juju controller. This controller will be used during the bootstrap process to setup
machine models and k8s. Once k8s is deployed, new Juju controller will be bootstrapped on
k8s and the necessary models will be migrated from LXD Juju controller.
This how-to guide provides all necessary information on how to perform aforementioned actions.
Set up LXD
Bootstrap LXD
To bootstrap LXD, execute the lxd init command on the node:
sudo lxd init
When prompted, answer some interactive questions. Below is a sample output from the cloud-1 machine from the example configuration:
Would you like to use LXD clustering? (yes/no) [default=no]: no
Do you want to configure a new storage pool? (yes/no) [default=yes]: yes
Name of the new storage pool [default=default]: default
Name of the storage backend to use (ceph, dir, lvm, powerflex, zfs, btrfs) [default=zfs]: zfs
Create a new ZFS pool? (yes/no) [default=yes]: yes
Would you like to use an existing empty block device (e.g. a disk or partition)? (yes/no) [default=no]: no
Size in GiB of the new loop device (1GiB minimum) [default=15GiB]: 15GiB
Would you like to connect to a MAAS server? (yes/no) [default=no]: no
Would you like to create a new local network bridge? (yes/no) [default=yes]: yes
What should the new bridge be called? [default=lxdbr0]: br0
What IPv4 address should be used? (CIDR subnet notation, “auto” or “none”) [default=auto]: auto
What IPv6 address should be used? (CIDR subnet notation, “auto” or “none”) [default=auto]: auto
Would you like the LXD server to be available over the network? (yes/no) [default=no]: no
Would you like stale cached images to be updated automatically? (yes/no) [default=yes]: yes
Would you like a YAML "lxd init" preseed to be printed? (yes/no) [default=no]: no
Refer to the LXD documentation for detailed description of each of those questions and some examples.
Note: Change the bridge name, the default lxdbr0 fail to add current node to juju machine model.
LXD can be bootstrapped with a minimal preseed file:
cat <<EOF | sudo lxd init --preseed
networks:
- config:
ipv4.address: auto
ipv6.address: none
name: br0
project: default
storage_pools:
- name: default
driver: dir
profiles:
- devices:
eth0:
name: eth0
network: br0
type: nic
root:
path: /
pool: default
type: disk
name: default
EOF
Bootstrap Juju Controller
In the next step, bootstrap Juju controller on the node.
Install the snap
Install the juju snap:
sudo snap install juju
Bootstrap Juju controller
Then, bootstrap the juju controller with name mycloud:
juju bootstrap localhost mycloud