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lxc-profile

manages configuration profiles for LXD containers and virtual machines

TLDR

List the profiles that exist
$ lxc profile list
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Show one profile's configuration
$ lxc profile show [profile_name]
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Create an empty profile
$ lxc profile create [profile_name]
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Open a profile in the editor
$ lxc profile edit [profile_name]
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Load a profile from a YAML file
$ lxc profile edit [profile_name] < [path/to/config.yaml]
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Set a single key without opening an editor
$ lxc profile set [profile_name] [limits.memory] [2GiB]
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Attach a device to a profile
$ lxc profile device add [profile_name] [eth0] nic network=[lxdbr0]
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Launch a container with a chosen set of profiles
$ lxc launch [images:ubuntu/22.04] [container_name] --profile [default] --profile [gpu]
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Replace the profiles on an existing container
$ lxc profile assign [container_name] [default,gpu]
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Copy a profile under a new name
$ lxc profile copy [source_profile] [target_profile]
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Delete a profile
$ lxc profile delete [profile_name]
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SYNOPSIS

lxc profile command [options]

DESCRIPTION

lxc profile manages configuration profiles for LXD containers and virtual machines. Profiles define reusable sets of configuration options including resource limits, device mappings, network settings, and security policies.Containers can use multiple profiles, which are applied in order (later profiles override earlier ones). The default profile is automatically applied to new containers and typically includes basic network and storage configuration.Profile configuration uses YAML format, specifying options like CPU/memory limits, disk quotas, network interfaces, and GPU passthrough.

PARAMETERS

list

List all available profiles
show _profile_
Display the full configuration of a profile
edit _profile_
Open a profile for editing in the default editor
create _profile_
Create a new empty profile
delete _profile_
Remove a profile
copy _source_ _dest_
Copy a profile to a new name
rename _old_ _new_
Rename a profile
assign _instance_ _profiles_
Set the profiles for an instance (comma-separated list)
add _instance_ _profile_
Add a profile to an instance's existing profiles
remove _instance_ _profile_
Remove a profile from an instance
set _profile_ _key_ _value_
Set a profile configuration key
get _profile_ _key_
Get a profile configuration value
device add _profile_ _device_ _type_ [_options_]
Add a device to a profile
device remove _profile_ _device_
Remove a device from a profile

INSTALL

sudo apt install lxd-client
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sudo dnf install lxc
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sudo pacman -S lxc
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sudo zypper install lxc
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brew install lxc
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nix profile install nixpkgs#lxc
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CAVEATS

Profile changes don't automatically apply to running containers; restart the container or reassign profiles to apply changes. Deleting a profile that's in use by containers will fail. The default profile cannot be deleted.

SEE ALSO

lxc(1), lxc-create(1), lxc-start(1), lxc-ls(1)

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