Add support for the "nix" snapshotter, which enables running container
images built with nix2container. Nix images reference store paths
directly, avoiding layer tarballs and enabling deduplication through
the nix store.
Changes:
- Register nix-snapshotter as a builtin containerd plugin
- Add NixSupported() validation (checks nix-store is in PATH)
- Configure nix-snapshotter image service proxy in V2/V3 templates
with containerd_address for CRI image operations
- Add Transfer service unpack_config with differ=walking for
multi-arch support
- Use containerd state dir for socket path (rootless compatible)
- Disable NRI in rootless mode to prevent bind failures
Usage: k3s server --snapshotter nix
Signed-off-by: Ada <ada@6bit.com>
Co-Authored-By: Joshua Perry <josh@6bit.com>
Signed-off-by: Ada <ada@6bit.com>
We are not making use of the stack traces that these functions capture, so we should avoid using them as unnecessary overhead.
Signed-off-by: Brad Davidson <brad.davidson@rancher.com>
Problem:
Configuring qos-class features in containerd requres a custom containerd configuration template.
Solution:
Look for configuration files in default locations and configure containerd to use them if they exist.
Signed-off-by: Oliver Larsson <larsson.e.oliver@gmail.com>
