mirror of
https://github.com/NixOS/nixpkgs.git
synced 2024-11-23 15:33:13 +00:00
6afb255d97
these changes were generated with nixq 0.0.2, by running nixq ">> lib.mdDoc[remove] Argument[keep]" --batchmode nixos/**.nix nixq ">> mdDoc[remove] Argument[keep]" --batchmode nixos/**.nix nixq ">> Inherit >> mdDoc[remove]" --batchmode nixos/**.nix two mentions of the mdDoc function remain in nixos/, both of which are inside of comments. Since lib.mdDoc is already defined as just id, this commit is a no-op as far as Nix (and the built manual) is concerned.
104 lines
2.9 KiB
Nix
104 lines
2.9 KiB
Nix
{ config, lib, pkgs, ... }:
|
|
|
|
let
|
|
cfg = config.virtualisation.lxd.agent;
|
|
|
|
# the lxd agent is provided by the lxd daemon through a virtiofs or 9p mount
|
|
# this is a port of the distrobuilder lxd-agent generator
|
|
# https://github.com/lxc/distrobuilder/blob/f77300bf7d7d5707b08eaf8a434d647d1ba81b5d/generators/lxd-agent.go#L18-L55
|
|
preStartScript = ''
|
|
PREFIX="/run/lxd_agent"
|
|
|
|
mount_virtiofs() {
|
|
mount -t virtiofs config "$PREFIX/.mnt" >/dev/null 2>&1
|
|
}
|
|
|
|
mount_9p() {
|
|
modprobe 9pnet_virtio >/dev/null 2>&1 || true
|
|
mount -t 9p config "$PREFIX/.mnt" -o access=0,trans=virtio,size=1048576 >/dev/null 2>&1
|
|
}
|
|
|
|
fail() {
|
|
umount -l "$PREFIX" >/dev/null 2>&1 || true
|
|
rmdir "$PREFIX" >/dev/null 2>&1 || true
|
|
echo "$1"
|
|
exit 1
|
|
}
|
|
|
|
# Setup the mount target.
|
|
umount -l "$PREFIX" >/dev/null 2>&1 || true
|
|
mkdir -p "$PREFIX"
|
|
mount -t tmpfs tmpfs "$PREFIX" -o mode=0700,size=50M
|
|
mkdir -p "$PREFIX/.mnt"
|
|
|
|
# Try virtiofs first.
|
|
mount_virtiofs || mount_9p || fail "Couldn't mount virtiofs or 9p, failing."
|
|
|
|
# Copy the data.
|
|
cp -Ra "$PREFIX/.mnt/"* "$PREFIX"
|
|
|
|
# Unmount the temporary mount.
|
|
umount "$PREFIX/.mnt"
|
|
rmdir "$PREFIX/.mnt"
|
|
|
|
# Fix up permissions.
|
|
chown -R root:root "$PREFIX"
|
|
'';
|
|
in {
|
|
meta = {
|
|
maintainers = lib.teams.lxc.members;
|
|
};
|
|
|
|
options = {
|
|
virtualisation.lxd.agent.enable = lib.mkEnableOption "Enable LXD agent";
|
|
};
|
|
|
|
config = lib.mkIf cfg.enable {
|
|
# https://github.com/lxc/distrobuilder/blob/f77300bf7d7d5707b08eaf8a434d647d1ba81b5d/generators/lxd-agent.go#L108-L125
|
|
systemd.services.lxd-agent = {
|
|
enable = true;
|
|
wantedBy = [ "multi-user.target" ];
|
|
before = [ "shutdown.target" ] ++ lib.optionals config.services.cloud-init.enable [
|
|
"cloud-init.target" "cloud-init.service" "cloud-init-local.service"
|
|
];
|
|
conflicts = [ "shutdown.target" ];
|
|
path = [
|
|
pkgs.kmod
|
|
pkgs.util-linux
|
|
|
|
# allow `incus exec` to find system binaries
|
|
"/run/current-system/sw"
|
|
];
|
|
|
|
preStart = preStartScript;
|
|
|
|
# avoid killing nixos-rebuild switch when executed through lxc exec
|
|
restartIfChanged = false;
|
|
stopIfChanged = false;
|
|
|
|
unitConfig = {
|
|
Description = "LXD - agent";
|
|
Documentation = "https://documentation.ubuntu.com/lxd/en/latest";
|
|
ConditionPathExists = "/dev/virtio-ports/org.linuxcontainers.lxd";
|
|
DefaultDependencies = "no";
|
|
StartLimitInterval = "60";
|
|
StartLimitBurst = "10";
|
|
};
|
|
|
|
serviceConfig = {
|
|
Type = "notify";
|
|
WorkingDirectory = "-/run/lxd_agent";
|
|
ExecStart = "/run/lxd_agent/lxd-agent";
|
|
Restart = "on-failure";
|
|
RestartSec = "5s";
|
|
};
|
|
};
|
|
|
|
systemd.paths.lxd-agent = {
|
|
enable = true;
|
|
wantedBy = [ "multi-user.target" ];
|
|
pathConfig.PathExists = "/dev/virtio-ports/org.linuxcontainers.lxd";
|
|
};
|
|
};
|
|
}
|