cloudinittool is a small command line tool for managing cloud-init local datasource.
It it not a general tool, but a minimal tool just for my needs to boot a Ubuntu VM on multipass and Hyper-V.
Usage: cloudinittool <subcommand> [options]
subcommands:
modify-user-data Modify user-data.
make-iso Make an ISO image
Run cloudinittool <subcommand> -h to show help for subcommand.
Usage: cloudinittool modify-user-data [options]
options:
-in string
input user-data yaml file. required.
-out string
output user-data yaml file. required.
-passwd
show prompt to input default user password. optional.
-pub-key string
add ssh public key to ssh_authorized_keys. optional.
Usage: cloudinittool make-iso [options]
options:
-meta-data string
input meta-data yaml file. optional.
-network-config string
input network-config yaml file. optional.
-out string
output ISO image file. required.
-user-data string
input user-data yaml file. required.
The input file for modify-user-data subcommand is like below:
user-data.in.yml
#cloud-config
locale: en_US.UTF8
timezone: Asia/Tokyo
package_upgrade: true
package_reboot_if_required: true
apt:
primary:
arches:
- amd64
- default
uri: http://jp.archive.ubuntu.com/ubuntu/
chpasswd:
expire: false
Generate ssh key pair, for example:
ssh-keygen -t ed25519 -f ~/.ssh/vm.id_ed25519 -C vm -N ''
Run the following command to add the password and an authorized key for the default user.
You can input the password at Password: prompt and the Confirm password: prompt.
cloudinittool modify-user-data -in user-data.in.yml -out user-data \
-passwd -pub-key ~/.ssh/vm.id_ed25519.pub
The output file user-data is like below:
#cloud-config
locale: en_US.UTF8
timezone: Asia/Tokyo
package_upgrade: true
package_reboot_if_required: true
apt:
primary:
arches:
- amd64
- default
uri: http://jp.archive.ubuntu.com/ubuntu/
password: $6$...SALT...$...HASHED_PASSWORD_HERE...
chpasswd:
expire: false
ssh_authorized_keys:
- |
ssh-ed25519 ...YOUR_PUBLIC_KEY_HERE...
You can use pass this user-data file to multipass launch with the --cloud-init option.
multipass launch --name primary --cpus 2 --mem 4G --disk 100G --cloud-init user-data
An example network-config in Networking Config Version 2 format:
version: 2
ethernets:
eth0:
dhcp4: false
addresses:
- 192.168.254.2/24
gateway4: 192.168.254.1
nameservers:
addresses: [8.8.8.8, 8.8.4.4]
You can make an ISO image to pass to launch a VM on Hyper-V, for example:
cloudinittool make-iso -user-data user-data -network-config network-config -out cloud-init.iso
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