lxc-checkconfig

checks whether the current kernel has the required features enabled for LXC

TLDR

Check current kernel support

$ lxc-checkconfig

Check specific kernel config

$ CONFIG=/path/to/config lxc-checkconfig

SYNOPSIS

lxc-checkconfig

DESCRIPTION

lxc-checkconfig checks whether the current kernel has the required features enabled for LXC container support. It examines namespaces, cgroups, and other kernel capabilities.

CHECKS PERFORMED

Namespaces: User, PID, UTS, IPC, NetworkCgroups: v1/v2, controllersMisc: Seccomp, checkpoint/restore

INSTALL

sudo apt install lxc

sudo dnf install lxc

sudo pacman -S lxc

sudo apk add lxc

sudo zypper install lxc

brew install lxc

nix profile install nixpkgs#lxc

CAVEATS

Set CONFIG environment variable to check a different kernel configuration file. Helps diagnose why containers might not work on a system.