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lxc-containers.nix: get working

This commit is contained in:
Astro 2021-03-27 03:43:19 +01:00
parent 74c10c0446
commit ea515088b3
1 changed files with 30 additions and 7 deletions
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37
nix/nixos-module/server/lxc-containers.nix
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@ -124,35 +124,58 @@ in
} (builtins.attrNames containers);
systemd.services."lxc-rootfs@" = {
description = "Build a NixOS rootfs for LXC container '%i'";
description = "rootfs for '%i'";
wants = [ "nix-daemon.service" ];
path = [ config.nix.package pkgs.util-linux pkgs.git ];
scriptArgs = "%i";
script = ''
mkdir -p /var/lib/lxc/$1
flock /tmp/lxc-rootfs-build.lock -c \
[ ! -e /var/lib/lxc/$1/rootfs ] &&
flock /tmp/lxc-rootfs-build.lock -c \
"nix build -o /var/lib/lxc/$1/rootfs zentralwerk-network#$1-rootfs"
exit 0
'';
unitConfig.ConditionPathExists = "!/var/lib/lxc/%i/rootfs";
serviceConfig.Type = "oneshot";
};
systemd.services."lxc@" = {
description = "LXC container '%i'";
wants = [ "systemd-networkd.service" ];
requires = [ "lxc-rootfs@%i.service" ];
unitConfig.ConditionPathExists = "/var/lib/lxc/%i/rootfs";
after = [ "lxc-rootfs@%i.service" ];
serviceConfig = {
Type = "simple";
ExecStart = "${pkgs.lxc}/bin/lxc-start -F -C -n %i";
ExecStart =
let
script = pkgs.writeScript "start-lxc-container.sh" ''
#! ${pkgs.stdenv.shell} -e
[ -e /var/lib/lxc/$1/rootfs ]
exec ${pkgs.lxc}/bin/lxc-start -F -C -n $1
'';
in
"${script} %i";
ExecStop = "${pkgs.lxc}/bin/lxc-stop -n %i";
ExecReload =
let
script = pkgs.writeScript "reload-lxc-container.sh" ''
#! ${pkgs.stdenv.shell} -e
SYSTEM=$(dirname $(readlink $(readlink /var/lib/lxc/$1/rootfs)/init))
exec ${pkgs.lxc}/bin/lxc-attach -n $1 $SYSTEM/activate
'';
in
"${script} %i";
KillMode = "mixed";
OOMPolicy = "kill";
Restart = "always";
RestartSec = "5s";
RestartSec = "30s";
};
};
systemd.targets.lxc-containers = {
wantedBy = [ "multi-user.target" ];
wants = map (ctName: "lxc@${ctName}.service") (builtins.attrNames containers);
wants = map (ctName: "lxc@${ctName}.service")
(builtins.attrNames containers);
};
}