How to auto start LXD containers VM at boot time in Linux

To start an LXD container automatically at boot time, you can use the following steps:

1. Start the container manually using the lxc start command. For example:

lxc start mycontainer

2. Set the container to autostart using the lxc config set command. For example:

lxc config set mycontainer boot.autostart true

3. Check that the container is set to autostart using the lxc config show command. For example:

lxc config show mycontainer | grep autostart

This should output the line "autostart: true".

Note: The container must be in the "RUNNING" state for the autostart setting to take effect.

Alternatively, you can create a systemd service to start the container at boot time. To do this, create a file in the /etc/systemd/system directory with a name like "lxd-mycontainer.service" and the following contents:

[Unit]
Description=LXD container: mycontainer
After=network.target

[Service]
Type=simple
ExecStart=/usr/bin/lxc start mycontainer
ExecStop=/usr/bin/lxc stop mycontainer

[Install]
WantedBy=multi-user.target

Then enable and start the service using the following commands:

systemctl enable lxd-mycontainer
systemctl start lxd-mycontainer

The container should now start automatically at boot time.