forked from mirrors/nixpkgs
Merge pull request #85604 from adisbladis/podman-module
nixos/virtualisation.podman: Init module
This commit is contained in:
adisbladis
GitHub
commit
2d91da909e
|
|
@ -33,10 +33,11 @@ with lib.maintainers; {
|
|||
|
||||
podman = {
|
||||
members = [
|
||||
adisbladis
|
||||
saschagrunert
|
||||
vdemeester
|
||||
zowoq
|
||||
];
|
||||
scope = "Maintain podman related packages.";
|
||||
scope = "Maintain Podman related packages and modules.";
|
||||
};
|
||||
}
|
||||
|
|
|
|||
|
|
@ -40,6 +40,11 @@
|
|||
make use of these new options instead.
|
||||
</para>
|
||||
</listitem>
|
||||
<listitem>
|
||||
<para>
|
||||
There is a new module for Podman(<varname>virtualisation.podman</varname>), a drop-in replacement for the Docker command line.
|
||||
</para>
|
||||
</listitem>
|
||||
</itemizedlist>
|
||||
</section>
|
||||
|
||||
|
|
|
|||
|
|
@ -984,6 +984,7 @@
|
|||
./virtualisation/anbox.nix
|
||||
./virtualisation/container-config.nix
|
||||
./virtualisation/containers.nix
|
||||
./virtualisation/nixos-containers.nix
|
||||
./virtualisation/cri-o.nix
|
||||
./virtualisation/docker.nix
|
||||
./virtualisation/docker-containers.nix
|
||||
|
|
@ -997,6 +998,7 @@
|
|||
./virtualisation/kvmgt.nix
|
||||
./virtualisation/openvswitch.nix
|
||||
./virtualisation/parallels-guest.nix
|
||||
./virtualisation/podman.nix
|
||||
./virtualisation/qemu-guest-agent.nix
|
||||
./virtualisation/railcar.nix
|
||||
./virtualisation/rkt.nix
|
||||
|
|
|
|||
|
|
@ -1,838 +1,150 @@
|
|||
{ config, lib, pkgs, ... }:
|
||||
|
||||
with lib;
|
||||
|
||||
let
|
||||
cfg = config.virtualisation.containers;
|
||||
|
||||
# The container's init script, a small wrapper around the regular
|
||||
# NixOS stage-2 init script.
|
||||
containerInit = (cfg:
|
||||
let
|
||||
renderExtraVeth = (name: cfg:
|
||||
''
|
||||
echo "Bringing ${name} up"
|
||||
ip link set dev ${name} up
|
||||
${optionalString (cfg.localAddress != null) ''
|
||||
echo "Setting ip for ${name}"
|
||||
ip addr add ${cfg.localAddress} dev ${name}
|
||||
''}
|
||||
${optionalString (cfg.localAddress6 != null) ''
|
||||
echo "Setting ip6 for ${name}"
|
||||
ip -6 addr add ${cfg.localAddress6} dev ${name}
|
||||
''}
|
||||
${optionalString (cfg.hostAddress != null) ''
|
||||
echo "Setting route to host for ${name}"
|
||||
ip route add ${cfg.hostAddress} dev ${name}
|
||||
''}
|
||||
${optionalString (cfg.hostAddress6 != null) ''
|
||||
echo "Setting route6 to host for ${name}"
|
||||
ip -6 route add ${cfg.hostAddress6} dev ${name}
|
||||
''}
|
||||
''
|
||||
);
|
||||
in
|
||||
pkgs.writeScript "container-init"
|
||||
''
|
||||
#! ${pkgs.runtimeShell} -e
|
||||
inherit (lib) mkOption types;
|
||||
|
||||
# Initialise the container side of the veth pair.
|
||||
if [ -n "$HOST_ADDRESS" ] || [ -n "$HOST_ADDRESS6" ] ||
|
||||
[ -n "$LOCAL_ADDRESS" ] || [ -n "$LOCAL_ADDRESS6" ] ||
|
||||
[ -n "$HOST_BRIDGE" ]; then
|
||||
ip link set host0 name eth0
|
||||
ip link set dev eth0 up
|
||||
# Once https://github.com/NixOS/nixpkgs/pull/75584 is merged we can use the TOML generator
|
||||
toTOML = name: value: pkgs.runCommandNoCC name {
|
||||
nativeBuildInputs = [ pkgs.remarshal ];
|
||||
value = builtins.toJSON value;
|
||||
passAsFile = [ "value" ];
|
||||
} ''
|
||||
json2toml "$valuePath" "$out"
|
||||
'';
|
||||
|
||||
if [ -n "$LOCAL_ADDRESS" ]; then
|
||||
ip addr add $LOCAL_ADDRESS dev eth0
|
||||
fi
|
||||
if [ -n "$LOCAL_ADDRESS6" ]; then
|
||||
ip -6 addr add $LOCAL_ADDRESS6 dev eth0
|
||||
fi
|
||||
if [ -n "$HOST_ADDRESS" ]; then
|
||||
ip route add $HOST_ADDRESS dev eth0
|
||||
ip route add default via $HOST_ADDRESS
|
||||
fi
|
||||
if [ -n "$HOST_ADDRESS6" ]; then
|
||||
ip -6 route add $HOST_ADDRESS6 dev eth0
|
||||
ip -6 route add default via $HOST_ADDRESS6
|
||||
fi
|
||||
|
||||
${concatStringsSep "\n" (mapAttrsToList renderExtraVeth cfg.extraVeths)}
|
||||
fi
|
||||
|
||||
# Start the regular stage 1 script.
|
||||
exec "$1"
|
||||
''
|
||||
);
|
||||
|
||||
nspawnExtraVethArgs = (name: cfg: "--network-veth-extra=${name}");
|
||||
|
||||
startScript = cfg:
|
||||
''
|
||||
mkdir -p -m 0755 "$root/etc" "$root/var/lib"
|
||||
mkdir -p -m 0700 "$root/var/lib/private" "$root/root" /run/containers
|
||||
if ! [ -e "$root/etc/os-release" ]; then
|
||||
touch "$root/etc/os-release"
|
||||
fi
|
||||
|
||||
if ! [ -e "$root/etc/machine-id" ]; then
|
||||
touch "$root/etc/machine-id"
|
||||
fi
|
||||
|
||||
mkdir -p -m 0755 \
|
||||
"/nix/var/nix/profiles/per-container/$INSTANCE" \
|
||||
"/nix/var/nix/gcroots/per-container/$INSTANCE"
|
||||
|
||||
cp --remove-destination /etc/resolv.conf "$root/etc/resolv.conf"
|
||||
|
||||
if [ "$PRIVATE_NETWORK" = 1 ]; then
|
||||
extraFlags+=" --private-network"
|
||||
fi
|
||||
|
||||
if [ -n "$HOST_ADDRESS" ] || [ -n "$LOCAL_ADDRESS" ] ||
|
||||
[ -n "$HOST_ADDRESS6" ] || [ -n "$LOCAL_ADDRESS6" ]; then
|
||||
extraFlags+=" --network-veth"
|
||||
fi
|
||||
|
||||
if [ -n "$HOST_PORT" ]; then
|
||||
OIFS=$IFS
|
||||
IFS=","
|
||||
for i in $HOST_PORT
|
||||
do
|
||||
extraFlags+=" --port=$i"
|
||||
done
|
||||
IFS=$OIFS
|
||||
fi
|
||||
|
||||
if [ -n "$HOST_BRIDGE" ]; then
|
||||
extraFlags+=" --network-bridge=$HOST_BRIDGE"
|
||||
fi
|
||||
|
||||
extraFlags+=" ${concatStringsSep " " (mapAttrsToList nspawnExtraVethArgs cfg.extraVeths)}"
|
||||
|
||||
for iface in $INTERFACES; do
|
||||
extraFlags+=" --network-interface=$iface"
|
||||
done
|
||||
|
||||
for iface in $MACVLANS; do
|
||||
extraFlags+=" --network-macvlan=$iface"
|
||||
done
|
||||
|
||||
# If the host is 64-bit and the container is 32-bit, add a
|
||||
# --personality flag.
|
||||
${optionalString (config.nixpkgs.localSystem.system == "x86_64-linux") ''
|
||||
if [ "$(< ''${SYSTEM_PATH:-/nix/var/nix/profiles/per-container/$INSTANCE/system}/system)" = i686-linux ]; then
|
||||
extraFlags+=" --personality=x86"
|
||||
fi
|
||||
''}
|
||||
|
||||
# Run systemd-nspawn without startup notification (we'll
|
||||
# wait for the container systemd to signal readiness).
|
||||
exec ${config.systemd.package}/bin/systemd-nspawn \
|
||||
--keep-unit \
|
||||
-M "$INSTANCE" -D "$root" $extraFlags \
|
||||
$EXTRA_NSPAWN_FLAGS \
|
||||
--notify-ready=yes \
|
||||
--bind-ro=/nix/store \
|
||||
--bind-ro=/nix/var/nix/db \
|
||||
--bind-ro=/nix/var/nix/daemon-socket \
|
||||
--bind="/nix/var/nix/profiles/per-container/$INSTANCE:/nix/var/nix/profiles" \
|
||||
--bind="/nix/var/nix/gcroots/per-container/$INSTANCE:/nix/var/nix/gcroots" \
|
||||
${optionalString (!cfg.ephemeral) "--link-journal=try-guest"} \
|
||||
--setenv PRIVATE_NETWORK="$PRIVATE_NETWORK" \
|
||||
--setenv HOST_BRIDGE="$HOST_BRIDGE" \
|
||||
--setenv HOST_ADDRESS="$HOST_ADDRESS" \
|
||||
--setenv LOCAL_ADDRESS="$LOCAL_ADDRESS" \
|
||||
--setenv HOST_ADDRESS6="$HOST_ADDRESS6" \
|
||||
--setenv LOCAL_ADDRESS6="$LOCAL_ADDRESS6" \
|
||||
--setenv HOST_PORT="$HOST_PORT" \
|
||||
--setenv PATH="$PATH" \
|
||||
${optionalString cfg.ephemeral "--ephemeral"} \
|
||||
${if cfg.additionalCapabilities != null && cfg.additionalCapabilities != [] then
|
||||
''--capability="${concatStringsSep "," cfg.additionalCapabilities}"'' else ""
|
||||
} \
|
||||
${if cfg.tmpfs != null && cfg.tmpfs != [] then
|
||||
''--tmpfs=${concatStringsSep " --tmpfs=" cfg.tmpfs}'' else ""
|
||||
} \
|
||||
${containerInit cfg} "''${SYSTEM_PATH:-/nix/var/nix/profiles/system}/init"
|
||||
'';
|
||||
|
||||
preStartScript = cfg:
|
||||
''
|
||||
# Clean up existing machined registration and interfaces.
|
||||
machinectl terminate "$INSTANCE" 2> /dev/null || true
|
||||
|
||||
if [ -n "$HOST_ADDRESS" ] || [ -n "$LOCAL_ADDRESS" ] ||
|
||||
[ -n "$HOST_ADDRESS6" ] || [ -n "$LOCAL_ADDRESS6" ]; then
|
||||
ip link del dev "ve-$INSTANCE" 2> /dev/null || true
|
||||
ip link del dev "vb-$INSTANCE" 2> /dev/null || true
|
||||
fi
|
||||
|
||||
${concatStringsSep "\n" (
|
||||
mapAttrsToList (name: cfg:
|
||||
''ip link del dev ${name} 2> /dev/null || true ''
|
||||
) cfg.extraVeths
|
||||
)}
|
||||
'';
|
||||
|
||||
postStartScript = (cfg:
|
||||
let
|
||||
ipcall = cfg: ipcmd: variable: attribute:
|
||||
if cfg.${attribute} == null then
|
||||
''
|
||||
if [ -n "${variable}" ]; then
|
||||
${ipcmd} add ${variable} dev $ifaceHost
|
||||
fi
|
||||
''
|
||||
else
|
||||
''${ipcmd} add ${cfg.${attribute}} dev $ifaceHost'';
|
||||
renderExtraVeth = name: cfg:
|
||||
if cfg.hostBridge != null then
|
||||
''
|
||||
# Add ${name} to bridge ${cfg.hostBridge}
|
||||
ip link set dev ${name} master ${cfg.hostBridge} up
|
||||
''
|
||||
else
|
||||
''
|
||||
echo "Bring ${name} up"
|
||||
ip link set dev ${name} up
|
||||
# Set IPs and routes for ${name}
|
||||
${optionalString (cfg.hostAddress != null) ''
|
||||
ip addr add ${cfg.hostAddress} dev ${name}
|
||||
''}
|
||||
${optionalString (cfg.hostAddress6 != null) ''
|
||||
ip -6 addr add ${cfg.hostAddress6} dev ${name}
|
||||
''}
|
||||
${optionalString (cfg.localAddress != null) ''
|
||||
ip route add ${cfg.localAddress} dev ${name}
|
||||
''}
|
||||
${optionalString (cfg.localAddress6 != null) ''
|
||||
ip -6 route add ${cfg.localAddress6} dev ${name}
|
||||
''}
|
||||
'';
|
||||
in
|
||||
''
|
||||
if [ -n "$HOST_ADDRESS" ] || [ -n "$LOCAL_ADDRESS" ] ||
|
||||
[ -n "$HOST_ADDRESS6" ] || [ -n "$LOCAL_ADDRESS6" ]; then
|
||||
if [ -z "$HOST_BRIDGE" ]; then
|
||||
ifaceHost=ve-$INSTANCE
|
||||
ip link set dev $ifaceHost up
|
||||
|
||||
${ipcall cfg "ip addr" "$HOST_ADDRESS" "hostAddress"}
|
||||
${ipcall cfg "ip -6 addr" "$HOST_ADDRESS6" "hostAddress6"}
|
||||
${ipcall cfg "ip route" "$LOCAL_ADDRESS" "localAddress"}
|
||||
${ipcall cfg "ip -6 route" "$LOCAL_ADDRESS6" "localAddress6"}
|
||||
fi
|
||||
${concatStringsSep "\n" (mapAttrsToList renderExtraVeth cfg.extraVeths)}
|
||||
fi
|
||||
''
|
||||
);
|
||||
|
||||
serviceDirectives = cfg: {
|
||||
ExecReload = pkgs.writeScript "reload-container"
|
||||
''
|
||||
#! ${pkgs.runtimeShell} -e
|
||||
${pkgs.nixos-container}/bin/nixos-container run "$INSTANCE" -- \
|
||||
bash --login -c "''${SYSTEM_PATH:-/nix/var/nix/profiles/system}/bin/switch-to-configuration test"
|
||||
'';
|
||||
|
||||
SyslogIdentifier = "container %i";
|
||||
|
||||
EnvironmentFile = "-/etc/containers/%i.conf";
|
||||
|
||||
Type = "notify";
|
||||
|
||||
RuntimeDirectory = lib.optional cfg.ephemeral "containers/%i";
|
||||
|
||||
# Note that on reboot, systemd-nspawn returns 133, so this
|
||||
# unit will be restarted. On poweroff, it returns 0, so the
|
||||
# unit won't be restarted.
|
||||
RestartForceExitStatus = "133";
|
||||
SuccessExitStatus = "133";
|
||||
|
||||
# Some containers take long to start
|
||||
# especially when you automatically start many at once
|
||||
TimeoutStartSec = cfg.timeoutStartSec;
|
||||
|
||||
Restart = "on-failure";
|
||||
|
||||
Slice = "machine.slice";
|
||||
Delegate = true;
|
||||
|
||||
# Hack: we don't want to kill systemd-nspawn, since we call
|
||||
# "machinectl poweroff" in preStop to shut down the
|
||||
# container cleanly. But systemd requires sending a signal
|
||||
# (at least if we want remaining processes to be killed
|
||||
# after the timeout). So send an ignored signal.
|
||||
KillMode = "mixed";
|
||||
KillSignal = "WINCH";
|
||||
|
||||
DevicePolicy = "closed";
|
||||
DeviceAllow = map (d: "${d.node} ${d.modifier}") cfg.allowedDevices;
|
||||
# Copy configuration files to avoid having the entire sources in the system closure
|
||||
copyFile = filePath: pkgs.runCommandNoCC (builtins.unsafeDiscardStringContext (builtins.baseNameOf filePath)) {} ''
|
||||
cp ${filePath} $out
|
||||
'';
|
||||
in
|
||||
{
|
||||
meta = {
|
||||
maintainers = [] ++ lib.teams.podman.members;
|
||||
};
|
||||
|
||||
options.virtualisation.containers = {
|
||||
|
||||
system = config.nixpkgs.localSystem.system;
|
||||
|
||||
bindMountOpts = { name, ... }: {
|
||||
|
||||
options = {
|
||||
mountPoint = mkOption {
|
||||
example = "/mnt/usb";
|
||||
type = types.str;
|
||||
description = "Mount point on the container file system.";
|
||||
};
|
||||
hostPath = mkOption {
|
||||
default = null;
|
||||
example = "/home/alice";
|
||||
type = types.nullOr types.str;
|
||||
description = "Location of the host path to be mounted.";
|
||||
};
|
||||
isReadOnly = mkOption {
|
||||
default = true;
|
||||
enable =
|
||||
mkOption {
|
||||
type = types.bool;
|
||||
description = "Determine whether the mounted path will be accessed in read-only mode.";
|
||||
};
|
||||
};
|
||||
|
||||
config = {
|
||||
mountPoint = mkDefault name;
|
||||
};
|
||||
|
||||
};
|
||||
|
||||
allowedDeviceOpts = { ... }: {
|
||||
options = {
|
||||
node = mkOption {
|
||||
example = "/dev/net/tun";
|
||||
type = types.str;
|
||||
description = "Path to device node";
|
||||
};
|
||||
modifier = mkOption {
|
||||
example = "rw";
|
||||
type = types.str;
|
||||
default = false;
|
||||
description = ''
|
||||
Device node access modifier. Takes a combination
|
||||
<literal>r</literal> (read), <literal>w</literal> (write), and
|
||||
<literal>m</literal> (mknod). See the
|
||||
<literal>systemd.resource-control(5)</literal> man page for more
|
||||
information.'';
|
||||
This option enables the common libpod container configuration module.
|
||||
'';
|
||||
};
|
||||
|
||||
registries = {
|
||||
search = mkOption {
|
||||
type = types.listOf types.str;
|
||||
default = [ "docker.io" "quay.io" ];
|
||||
description = ''
|
||||
List of repositories to search.
|
||||
'';
|
||||
};
|
||||
|
||||
insecure = mkOption {
|
||||
default = [];
|
||||
type = types.listOf types.str;
|
||||
description = ''
|
||||
List of insecure repositories.
|
||||
'';
|
||||
};
|
||||
|
||||
block = mkOption {
|
||||
default = [];
|
||||
type = types.listOf types.str;
|
||||
description = ''
|
||||
List of blocked repositories.
|
||||
'';
|
||||
};
|
||||
};
|
||||
};
|
||||
|
||||
|
||||
mkBindFlag = d:
|
||||
let flagPrefix = if d.isReadOnly then " --bind-ro=" else " --bind=";
|
||||
mountstr = if d.hostPath != null then "${d.hostPath}:${d.mountPoint}" else "${d.mountPoint}";
|
||||
in flagPrefix + mountstr ;
|
||||
|
||||
mkBindFlags = bs: concatMapStrings mkBindFlag (lib.attrValues bs);
|
||||
|
||||
networkOptions = {
|
||||
hostBridge = mkOption {
|
||||
type = types.nullOr types.str;
|
||||
default = null;
|
||||
example = "br0";
|
||||
policy = mkOption {
|
||||
default = {};
|
||||
type = types.attrs;
|
||||
example = lib.literalExample ''
|
||||
{
|
||||
default = [ { type = "insecureAcceptAnything"; } ];
|
||||
transports = {
|
||||
docker-daemon = {
|
||||
"" = [ { type = "insecureAcceptAnything"; } ];
|
||||
};
|
||||
};
|
||||
}
|
||||
'';
|
||||
description = ''
|
||||
Put the host-side of the veth-pair into the named bridge.
|
||||
Only one of hostAddress* or hostBridge can be given.
|
||||
Signature verification policy file.
|
||||
If this option is empty the default policy file from
|
||||
<literal>skopeo</literal> will be used.
|
||||
'';
|
||||
};
|
||||
|
||||
forwardPorts = mkOption {
|
||||
type = types.listOf (types.submodule {
|
||||
users = mkOption {
|
||||
default = [];
|
||||
type = types.listOf types.str;
|
||||
description = ''
|
||||
List of users to set up subuid/subgid mappings for.
|
||||
This is a requirement for running rootless containers.
|
||||
'';
|
||||
};
|
||||
|
||||
libpod = mkOption {
|
||||
default = {};
|
||||
description = "Libpod configuration";
|
||||
type = types.submodule {
|
||||
options = {
|
||||
protocol = mkOption {
|
||||
type = types.str;
|
||||
default = "tcp";
|
||||
description = "The protocol specifier for port forwarding between host and container";
|
||||
};
|
||||
hostPort = mkOption {
|
||||
type = types.int;
|
||||
description = "Source port of the external interface on host";
|
||||
};
|
||||
containerPort = mkOption {
|
||||
type = types.nullOr types.int;
|
||||
default = null;
|
||||
description = "Target port of container";
|
||||
|
||||
extraConfig = mkOption {
|
||||
type = types.lines;
|
||||
default = "";
|
||||
description = ''
|
||||
Extra configuration that should be put in the libpod.conf
|
||||
configuration file
|
||||
'';
|
||||
|
||||
};
|
||||
};
|
||||
});
|
||||
default = [];
|
||||
example = [ { protocol = "tcp"; hostPort = 8080; containerPort = 80; } ];
|
||||
description = ''
|
||||
List of forwarded ports from host to container. Each forwarded port
|
||||
is specified by protocol, hostPort and containerPort. By default,
|
||||
protocol is tcp and hostPort and containerPort are assumed to be
|
||||
the same if containerPort is not explicitly given.
|
||||
'';
|
||||
};
|
||||
|
||||
|
||||
hostAddress = mkOption {
|
||||
type = types.nullOr types.str;
|
||||
default = null;
|
||||
example = "10.231.136.1";
|
||||
description = ''
|
||||
The IPv4 address assigned to the host interface.
|
||||
(Not used when hostBridge is set.)
|
||||
'';
|
||||
};
|
||||
|
||||
hostAddress6 = mkOption {
|
||||
type = types.nullOr types.str;
|
||||
default = null;
|
||||
example = "fc00::1";
|
||||
description = ''
|
||||
The IPv6 address assigned to the host interface.
|
||||
(Not used when hostBridge is set.)
|
||||
'';
|
||||
};
|
||||
|
||||
localAddress = mkOption {
|
||||
type = types.nullOr types.str;
|
||||
default = null;
|
||||
example = "10.231.136.2";
|
||||
description = ''
|
||||
The IPv4 address assigned to the interface in the container.
|
||||
If a hostBridge is used, this should be given with netmask to access
|
||||
the whole network. Otherwise the default netmask is /32 and routing is
|
||||
set up from localAddress to hostAddress and back.
|
||||
'';
|
||||
};
|
||||
|
||||
localAddress6 = mkOption {
|
||||
type = types.nullOr types.str;
|
||||
default = null;
|
||||
example = "fc00::2";
|
||||
description = ''
|
||||
The IPv6 address assigned to the interface in the container.
|
||||
If a hostBridge is used, this should be given with netmask to access
|
||||
the whole network. Otherwise the default netmask is /128 and routing is
|
||||
set up from localAddress6 to hostAddress6 and back.
|
||||
'';
|
||||
};
|
||||
|
||||
};
|
||||
|
||||
dummyConfig =
|
||||
{
|
||||
extraVeths = {};
|
||||
additionalCapabilities = [];
|
||||
ephemeral = false;
|
||||
timeoutStartSec = "15s";
|
||||
allowedDevices = [];
|
||||
hostAddress = null;
|
||||
hostAddress6 = null;
|
||||
localAddress = null;
|
||||
localAddress6 = null;
|
||||
tmpfs = null;
|
||||
};
|
||||
|
||||
in
|
||||
|
||||
{
|
||||
options = {
|
||||
|
||||
boot.isContainer = mkOption {
|
||||
type = types.bool;
|
||||
default = false;
|
||||
description = ''
|
||||
Whether this NixOS machine is a lightweight container running
|
||||
in another NixOS system.
|
||||
'';
|
||||
};
|
||||
|
||||
boot.enableContainers = mkOption {
|
||||
type = types.bool;
|
||||
default = !config.boot.isContainer;
|
||||
description = ''
|
||||
Whether to enable support for NixOS containers.
|
||||
'';
|
||||
};
|
||||
|
||||
containers = mkOption {
|
||||
type = types.attrsOf (types.submodule (
|
||||
{ config, options, name, ... }:
|
||||
{
|
||||
options = {
|
||||
|
||||
config = mkOption {
|
||||
description = ''
|
||||
A specification of the desired configuration of this
|
||||
container, as a NixOS module.
|
||||
'';
|
||||
type = let
|
||||
confPkgs = if config.pkgs == null then pkgs else config.pkgs;
|
||||
in lib.mkOptionType {
|
||||
name = "Toplevel NixOS config";
|
||||
merge = loc: defs: (import (confPkgs.path + "/nixos/lib/eval-config.nix") {
|
||||
inherit system;
|
||||
pkgs = confPkgs;
|
||||
baseModules = import (confPkgs.path + "/nixos/modules/module-list.nix");
|
||||
inherit (confPkgs) lib;
|
||||
modules =
|
||||
let
|
||||
extraConfig = {
|
||||
_file = "module at ${__curPos.file}:${toString __curPos.line}";
|
||||
config = {
|
||||
boot.isContainer = true;
|
||||
networking.hostName = mkDefault name;
|
||||
networking.useDHCP = false;
|
||||
assertions = [
|
||||
{
|
||||
assertion = config.privateNetwork -> stringLength name < 12;
|
||||
message = ''
|
||||
Container name `${name}` is too long: When `privateNetwork` is enabled, container names can
|
||||
not be longer than 11 characters, because the container's interface name is derived from it.
|
||||
This might be fixed in the future. See https://github.com/NixOS/nixpkgs/issues/38509
|
||||
'';
|
||||
}
|
||||
];
|
||||
};
|
||||
};
|
||||
in [ extraConfig ] ++ (map (x: x.value) defs);
|
||||
prefix = [ "containers" name ];
|
||||
}).config;
|
||||
};
|
||||
};
|
||||
|
||||
path = mkOption {
|
||||
type = types.path;
|
||||
example = "/nix/var/nix/profiles/containers/webserver";
|
||||
description = ''
|
||||
As an alternative to specifying
|
||||
<option>config</option>, you can specify the path to
|
||||
the evaluated NixOS system configuration, typically a
|
||||
symlink to a system profile.
|
||||
'';
|
||||
};
|
||||
|
||||
additionalCapabilities = mkOption {
|
||||
type = types.listOf types.str;
|
||||
default = [];
|
||||
example = [ "CAP_NET_ADMIN" "CAP_MKNOD" ];
|
||||
description = ''
|
||||
Grant additional capabilities to the container. See the
|
||||
capabilities(7) and systemd-nspawn(1) man pages for more
|
||||
information.
|
||||
'';
|
||||
};
|
||||
|
||||
pkgs = mkOption {
|
||||
type = types.nullOr types.attrs;
|
||||
default = null;
|
||||
example = literalExample "pkgs";
|
||||
description = ''
|
||||
Customise which nixpkgs to use for this container.
|
||||
'';
|
||||
};
|
||||
|
||||
ephemeral = mkOption {
|
||||
type = types.bool;
|
||||
default = false;
|
||||
description = ''
|
||||
Runs container in ephemeral mode with the empty root filesystem at boot.
|
||||
This way container will be bootstrapped from scratch on each boot
|
||||
and will be cleaned up on shutdown leaving no traces behind.
|
||||
Useful for completely stateless, reproducible containers.
|
||||
|
||||
Note that this option might require to do some adjustments to the container configuration,
|
||||
e.g. you might want to set
|
||||
<varname>systemd.network.networks.$interface.dhcpConfig.ClientIdentifier</varname> to "mac"
|
||||
if you use <varname>macvlans</varname> option.
|
||||
This way dhcp client identifier will be stable between the container restarts.
|
||||
|
||||
Note that the container journal will not be linked to the host if this option is enabled.
|
||||
'';
|
||||
};
|
||||
|
||||
enableTun = mkOption {
|
||||
type = types.bool;
|
||||
default = false;
|
||||
description = ''
|
||||
Allows the container to create and setup tunnel interfaces
|
||||
by granting the <literal>NET_ADMIN</literal> capability and
|
||||
enabling access to <literal>/dev/net/tun</literal>.
|
||||
'';
|
||||
};
|
||||
|
||||
privateNetwork = mkOption {
|
||||
type = types.bool;
|
||||
default = false;
|
||||
description = ''
|
||||
Whether to give the container its own private virtual
|
||||
Ethernet interface. The interface is called
|
||||
<literal>eth0</literal>, and is hooked up to the interface
|
||||
<literal>ve-<replaceable>container-name</replaceable></literal>
|
||||
on the host. If this option is not set, then the
|
||||
container shares the network interfaces of the host,
|
||||
and can bind to any port on any interface.
|
||||
'';
|
||||
};
|
||||
|
||||
interfaces = mkOption {
|
||||
type = types.listOf types.str;
|
||||
default = [];
|
||||
example = [ "eth1" "eth2" ];
|
||||
description = ''
|
||||
The list of interfaces to be moved into the container.
|
||||
'';
|
||||
};
|
||||
|
||||
macvlans = mkOption {
|
||||
type = types.listOf types.str;
|
||||
default = [];
|
||||
example = [ "eth1" "eth2" ];
|
||||
description = ''
|
||||
The list of host interfaces from which macvlans will be
|
||||
created. For each interface specified, a macvlan interface
|
||||
will be created and moved to the container.
|
||||
'';
|
||||
};
|
||||
|
||||
extraVeths = mkOption {
|
||||
type = with types; attrsOf (submodule { options = networkOptions; });
|
||||
default = {};
|
||||
description = ''
|
||||
Extra veth-pairs to be created for the container
|
||||
'';
|
||||
};
|
||||
|
||||
autoStart = mkOption {
|
||||
type = types.bool;
|
||||
default = false;
|
||||
description = ''
|
||||
Whether the container is automatically started at boot-time.
|
||||
'';
|
||||
};
|
||||
|
||||
timeoutStartSec = mkOption {
|
||||
type = types.str;
|
||||
default = "1min";
|
||||
description = ''
|
||||
Time for the container to start. In case of a timeout,
|
||||
the container processes get killed.
|
||||
See <citerefentry><refentrytitle>systemd.time</refentrytitle>
|
||||
<manvolnum>7</manvolnum></citerefentry>
|
||||
for more information about the format.
|
||||
'';
|
||||
};
|
||||
|
||||
bindMounts = mkOption {
|
||||
type = with types; loaOf (submodule bindMountOpts);
|
||||
default = {};
|
||||
example = literalExample ''
|
||||
{ "/home" = { hostPath = "/home/alice";
|
||||
isReadOnly = false; };
|
||||
}
|
||||
'';
|
||||
|
||||
description =
|
||||
''
|
||||
An extra list of directories that is bound to the container.
|
||||
'';
|
||||
};
|
||||
|
||||
allowedDevices = mkOption {
|
||||
type = with types; listOf (submodule allowedDeviceOpts);
|
||||
default = [];
|
||||
example = [ { node = "/dev/net/tun"; modifier = "rw"; } ];
|
||||
description = ''
|
||||
A list of device nodes to which the containers has access to.
|
||||
'';
|
||||
};
|
||||
|
||||
tmpfs = mkOption {
|
||||
type = types.listOf types.str;
|
||||
default = [];
|
||||
example = [ "/var" ];
|
||||
description = ''
|
||||
Mounts a set of tmpfs file systems into the container.
|
||||
Multiple paths can be specified.
|
||||
Valid items must conform to the --tmpfs argument
|
||||
of systemd-nspawn. See systemd-nspawn(1) for details.
|
||||
'';
|
||||
};
|
||||
|
||||
extraFlags = mkOption {
|
||||
type = types.listOf types.str;
|
||||
default = [];
|
||||
example = [ "--drop-capability=CAP_SYS_CHROOT" ];
|
||||
description = ''
|
||||
Extra flags passed to the systemd-nspawn command.
|
||||
See systemd-nspawn(1) for details.
|
||||
'';
|
||||
};
|
||||
|
||||
} // networkOptions;
|
||||
|
||||
config = mkMerge
|
||||
[
|
||||
(mkIf options.config.isDefined {
|
||||
path = config.config.system.build.toplevel;
|
||||
})
|
||||
];
|
||||
}));
|
||||
|
||||
default = {};
|
||||
example = literalExample
|
||||
''
|
||||
{ webserver =
|
||||
{ path = "/nix/var/nix/profiles/webserver";
|
||||
};
|
||||
database =
|
||||
{ config =
|
||||
{ config, pkgs, ... }:
|
||||
{ services.postgresql.enable = true;
|
||||
services.postgresql.package = pkgs.postgresql_9_6;
|
||||
|
||||
system.stateVersion = "17.03";
|
||||
};
|
||||
};
|
||||
}
|
||||
'';
|
||||
description = ''
|
||||
A set of NixOS system configurations to be run as lightweight
|
||||
containers. Each container appears as a service
|
||||
<literal>container-<replaceable>name</replaceable></literal>
|
||||
on the host system, allowing it to be started and stopped via
|
||||
<command>systemctl</command>.
|
||||
'';
|
||||
};
|
||||
|
||||
};
|
||||
|
||||
|
||||
config = mkIf (config.boot.enableContainers) (let
|
||||
|
||||
unit = {
|
||||
description = "Container '%i'";
|
||||
|
||||
unitConfig.RequiresMountsFor = "/var/lib/containers/%i";
|
||||
|
||||
path = [ pkgs.iproute ];
|
||||
|
||||
environment = {
|
||||
root = "/var/lib/containers/%i";
|
||||
INSTANCE = "%i";
|
||||
};
|
||||
|
||||
preStart = preStartScript dummyConfig;
|
||||
|
||||
script = startScript dummyConfig;
|
||||
|
||||
postStart = postStartScript dummyConfig;
|
||||
|
||||
preStop = "machinectl poweroff $INSTANCE";
|
||||
|
||||
restartIfChanged = false;
|
||||
|
||||
serviceConfig = serviceDirectives dummyConfig;
|
||||
};
|
||||
in {
|
||||
systemd.targets.multi-user.wants = [ "machines.target" ];
|
||||
|
||||
systemd.services = listToAttrs (filter (x: x.value != null) (
|
||||
# The generic container template used by imperative containers
|
||||
[{ name = "container@"; value = unit; }]
|
||||
# declarative containers
|
||||
++ (mapAttrsToList (name: cfg: nameValuePair "container@${name}" (let
|
||||
containerConfig = cfg // (
|
||||
if cfg.enableTun then
|
||||
{
|
||||
allowedDevices = cfg.allowedDevices
|
||||
++ [ { node = "/dev/net/tun"; modifier = "rw"; } ];
|
||||
additionalCapabilities = cfg.additionalCapabilities
|
||||
++ [ "CAP_NET_ADMIN" ];
|
||||
}
|
||||
else {});
|
||||
in
|
||||
recursiveUpdate unit {
|
||||
preStart = preStartScript containerConfig;
|
||||
script = startScript containerConfig;
|
||||
postStart = postStartScript containerConfig;
|
||||
serviceConfig = serviceDirectives containerConfig;
|
||||
unitConfig.RequiresMountsFor = lib.optional (!containerConfig.ephemeral) "/var/lib/containers/%i";
|
||||
environment.root = if containerConfig.ephemeral then "/run/containers/%i" else "/var/lib/containers/%i";
|
||||
} // (
|
||||
if containerConfig.autoStart then
|
||||
{
|
||||
wantedBy = [ "machines.target" ];
|
||||
wants = [ "network.target" ];
|
||||
after = [ "network.target" ];
|
||||
restartTriggers = [
|
||||
containerConfig.path
|
||||
config.environment.etc."containers/${name}.conf".source
|
||||
];
|
||||
restartIfChanged = true;
|
||||
}
|
||||
else {})
|
||||
)) config.containers)
|
||||
));
|
||||
};
|
||||
|
||||
# Generate a configuration file in /etc/containers for each
|
||||
# container so that container@.target can get the container
|
||||
# configuration.
|
||||
environment.etc =
|
||||
let mkPortStr = p: p.protocol + ":" + (toString p.hostPort) + ":" + (if p.containerPort == null then toString p.hostPort else toString p.containerPort);
|
||||
in mapAttrs' (name: cfg: nameValuePair "containers/${name}.conf"
|
||||
{ text =
|
||||
''
|
||||
SYSTEM_PATH=${cfg.path}
|
||||
${optionalString cfg.privateNetwork ''
|
||||
PRIVATE_NETWORK=1
|
||||
${optionalString (cfg.hostBridge != null) ''
|
||||
HOST_BRIDGE=${cfg.hostBridge}
|
||||
''}
|
||||
${optionalString (length cfg.forwardPorts > 0) ''
|
||||
HOST_PORT=${concatStringsSep "," (map mkPortStr cfg.forwardPorts)}
|
||||
''}
|
||||
${optionalString (cfg.hostAddress != null) ''
|
||||
HOST_ADDRESS=${cfg.hostAddress}
|
||||
''}
|
||||
${optionalString (cfg.hostAddress6 != null) ''
|
||||
HOST_ADDRESS6=${cfg.hostAddress6}
|
||||
''}
|
||||
${optionalString (cfg.localAddress != null) ''
|
||||
LOCAL_ADDRESS=${cfg.localAddress}
|
||||
''}
|
||||
${optionalString (cfg.localAddress6 != null) ''
|
||||
LOCAL_ADDRESS6=${cfg.localAddress6}
|
||||
''}
|
||||
''}
|
||||
INTERFACES="${toString cfg.interfaces}"
|
||||
MACVLANS="${toString cfg.macvlans}"
|
||||
${optionalString cfg.autoStart ''
|
||||
AUTO_START=1
|
||||
''}
|
||||
EXTRA_NSPAWN_FLAGS="${mkBindFlags cfg.bindMounts +
|
||||
optionalString (cfg.extraFlags != [])
|
||||
(" " + concatStringsSep " " cfg.extraFlags)}"
|
||||
'';
|
||||
}) config.containers;
|
||||
config = lib.mkIf cfg.enable {
|
||||
|
||||
# Generate /etc/hosts entries for the containers.
|
||||
networking.extraHosts = concatStrings (mapAttrsToList (name: cfg: optionalString (cfg.localAddress != null)
|
||||
''
|
||||
${head (splitString "/" cfg.localAddress)} ${name}.containers
|
||||
'') config.containers);
|
||||
environment.etc."containers/libpod.conf".text = ''
|
||||
cni_plugin_dir = ["${pkgs.cni-plugins}/bin/"]
|
||||
cni_config_dir = "/etc/cni/net.d/"
|
||||
|
||||
networking.dhcpcd.denyInterfaces = [ "ve-*" "vb-*" ];
|
||||
'' + cfg.libpod.extraConfig;
|
||||
|
||||
services.udev.extraRules = optionalString config.networking.networkmanager.enable ''
|
||||
# Don't manage interfaces created by nixos-container.
|
||||
ENV{INTERFACE}=="v[eb]-*", ENV{NM_UNMANAGED}="1"
|
||||
'';
|
||||
environment.etc."containers/registries.conf".source = toTOML "registries.conf" {
|
||||
registries = lib.mapAttrs (n: v: { registries = v; }) cfg.registries;
|
||||
};
|
||||
|
||||
environment.systemPackages = [ pkgs.nixos-container ];
|
||||
users.extraUsers = builtins.listToAttrs (
|
||||
(
|
||||
builtins.foldl' (
|
||||
acc: user: {
|
||||
values = acc.values ++ [
|
||||
{
|
||||
name = user;
|
||||
value = {
|
||||
subUidRanges = [ { startUid = acc.offset; count = 65536; } ];
|
||||
subGidRanges = [ { startGid = acc.offset; count = 65536; } ];
|
||||
};
|
||||
}
|
||||
];
|
||||
offset = acc.offset + 65536;
|
||||
}
|
||||
)
|
||||
{ values = []; offset = 100000; } (lib.unique cfg.users)
|
||||
).values
|
||||
);
|
||||
|
||||
environment.etc."containers/policy.json".source =
|
||||
if cfg.policy != {} then pkgs.writeText "policy.json" (builtins.toJSON cfg.policy)
|
||||
else copyFile "${pkgs.skopeo.src}/default-policy.json";
|
||||
};
|
||||
|
||||
boot.kernelModules = [
|
||||
"bridge"
|
||||
"macvlan"
|
||||
"tap"
|
||||
"tun"
|
||||
];
|
||||
});
|
||||
}
|
||||
|
|
|
|||
|
|
@ -62,9 +62,7 @@ in
|
|||
log_level = "${cfg.logLevel}"
|
||||
manage_network_ns_lifecycle = true
|
||||
'';
|
||||
environment.etc."containers/policy.json".text = ''
|
||||
{"default": [{"type": "insecureAcceptAnything"}]}
|
||||
'';
|
||||
|
||||
environment.etc."cni/net.d/20-cri-o-bridge.conf".text = ''
|
||||
{
|
||||
"cniVersion": "0.3.1",
|
||||
|
|
@ -83,6 +81,9 @@ in
|
|||
}
|
||||
'';
|
||||
|
||||
# Enable common container configuration, this will create policy.json
|
||||
virtualisation.containers.enable = true;
|
||||
|
||||
systemd.services.crio = {
|
||||
description = "Container Runtime Interface for OCI (CRI-O)";
|
||||
documentation = [ "https://github.com/cri-o/cri-o" ];
|
||||
|
|
|
|||
838
nixos/modules/virtualisation/nixos-containers.nix
Normal file
838
nixos/modules/virtualisation/nixos-containers.nix
Normal file
|
|
@ -0,0 +1,838 @@
|
|||
{ config, lib, pkgs, ... }:
|
||||
|
||||
with lib;
|
||||
|
||||
let
|
||||
|
||||
# The container's init script, a small wrapper around the regular
|
||||
# NixOS stage-2 init script.
|
||||
containerInit = (cfg:
|
||||
let
|
||||
renderExtraVeth = (name: cfg:
|
||||
''
|
||||
echo "Bringing ${name} up"
|
||||
ip link set dev ${name} up
|
||||
${optionalString (cfg.localAddress != null) ''
|
||||
echo "Setting ip for ${name}"
|
||||
ip addr add ${cfg.localAddress} dev ${name}
|
||||
''}
|
||||
${optionalString (cfg.localAddress6 != null) ''
|
||||
echo "Setting ip6 for ${name}"
|
||||
ip -6 addr add ${cfg.localAddress6} dev ${name}
|
||||
''}
|
||||
${optionalString (cfg.hostAddress != null) ''
|
||||
echo "Setting route to host for ${name}"
|
||||
ip route add ${cfg.hostAddress} dev ${name}
|
||||
''}
|
||||
${optionalString (cfg.hostAddress6 != null) ''
|
||||
echo "Setting route6 to host for ${name}"
|
||||
ip -6 route add ${cfg.hostAddress6} dev ${name}
|
||||
''}
|
||||
''
|
||||
);
|
||||
in
|
||||
pkgs.writeScript "container-init"
|
||||
''
|
||||
#! ${pkgs.runtimeShell} -e
|
||||
|
||||
# Initialise the container side of the veth pair.
|
||||
if [ -n "$HOST_ADDRESS" ] || [ -n "$HOST_ADDRESS6" ] ||
|
||||
[ -n "$LOCAL_ADDRESS" ] || [ -n "$LOCAL_ADDRESS6" ] ||
|
||||
[ -n "$HOST_BRIDGE" ]; then
|
||||
ip link set host0 name eth0
|
||||
ip link set dev eth0 up
|
||||
|
||||
if [ -n "$LOCAL_ADDRESS" ]; then
|
||||
ip addr add $LOCAL_ADDRESS dev eth0
|
||||
fi
|
||||
if [ -n "$LOCAL_ADDRESS6" ]; then
|
||||
ip -6 addr add $LOCAL_ADDRESS6 dev eth0
|
||||
fi
|
||||
if [ -n "$HOST_ADDRESS" ]; then
|
||||
ip route add $HOST_ADDRESS dev eth0
|
||||
ip route add default via $HOST_ADDRESS
|
||||
fi
|
||||
if [ -n "$HOST_ADDRESS6" ]; then
|
||||
ip -6 route add $HOST_ADDRESS6 dev eth0
|
||||
ip -6 route add default via $HOST_ADDRESS6
|
||||
fi
|
||||
|
||||
${concatStringsSep "\n" (mapAttrsToList renderExtraVeth cfg.extraVeths)}
|
||||
fi
|
||||
|
||||
# Start the regular stage 1 script.
|
||||
exec "$1"
|
||||
''
|
||||
);
|
||||
|
||||
nspawnExtraVethArgs = (name: cfg: "--network-veth-extra=${name}");
|
||||
|
||||
startScript = cfg:
|
||||
''
|
||||
mkdir -p -m 0755 "$root/etc" "$root/var/lib"
|
||||
mkdir -p -m 0700 "$root/var/lib/private" "$root/root" /run/containers
|
||||
if ! [ -e "$root/etc/os-release" ]; then
|
||||
touch "$root/etc/os-release"
|
||||
fi
|
||||
|
||||
if ! [ -e "$root/etc/machine-id" ]; then
|
||||
touch "$root/etc/machine-id"
|
||||
fi
|
||||
|
||||
mkdir -p -m 0755 \
|
||||
"/nix/var/nix/profiles/per-container/$INSTANCE" \
|
||||
"/nix/var/nix/gcroots/per-container/$INSTANCE"
|
||||
|
||||
cp --remove-destination /etc/resolv.conf "$root/etc/resolv.conf"
|
||||
|
||||
if [ "$PRIVATE_NETWORK" = 1 ]; then
|
||||
extraFlags+=" --private-network"
|
||||
fi
|
||||
|
||||
if [ -n "$HOST_ADDRESS" ] || [ -n "$LOCAL_ADDRESS" ] ||
|
||||
[ -n "$HOST_ADDRESS6" ] || [ -n "$LOCAL_ADDRESS6" ]; then
|
||||
extraFlags+=" --network-veth"
|
||||
fi
|
||||
|
||||
if [ -n "$HOST_PORT" ]; then
|
||||
OIFS=$IFS
|
||||
IFS=","
|
||||
for i in $HOST_PORT
|
||||
do
|
||||
extraFlags+=" --port=$i"
|
||||
done
|
||||
IFS=$OIFS
|
||||
fi
|
||||
|
||||
if [ -n "$HOST_BRIDGE" ]; then
|
||||
extraFlags+=" --network-bridge=$HOST_BRIDGE"
|
||||
fi
|
||||
|
||||
extraFlags+=" ${concatStringsSep " " (mapAttrsToList nspawnExtraVethArgs cfg.extraVeths)}"
|
||||
|
||||
for iface in $INTERFACES; do
|
||||
extraFlags+=" --network-interface=$iface"
|
||||
done
|
||||
|
||||
for iface in $MACVLANS; do
|
||||
extraFlags+=" --network-macvlan=$iface"
|
||||
done
|
||||
|
||||
# If the host is 64-bit and the container is 32-bit, add a
|
||||
# --personality flag.
|
||||
${optionalString (config.nixpkgs.localSystem.system == "x86_64-linux") ''
|
||||
if [ "$(< ''${SYSTEM_PATH:-/nix/var/nix/profiles/per-container/$INSTANCE/system}/system)" = i686-linux ]; then
|
||||
extraFlags+=" --personality=x86"
|
||||
fi
|
||||
''}
|
||||
|
||||
# Run systemd-nspawn without startup notification (we'll
|
||||
# wait for the container systemd to signal readiness).
|
||||
exec ${config.systemd.package}/bin/systemd-nspawn \
|
||||
--keep-unit \
|
||||
-M "$INSTANCE" -D "$root" $extraFlags \
|
||||
$EXTRA_NSPAWN_FLAGS \
|
||||
--notify-ready=yes \
|
||||
--bind-ro=/nix/store \
|
||||
--bind-ro=/nix/var/nix/db \
|
||||
--bind-ro=/nix/var/nix/daemon-socket \
|
||||
--bind="/nix/var/nix/profiles/per-container/$INSTANCE:/nix/var/nix/profiles" \
|
||||
--bind="/nix/var/nix/gcroots/per-container/$INSTANCE:/nix/var/nix/gcroots" \
|
||||
${optionalString (!cfg.ephemeral) "--link-journal=try-guest"} \
|
||||
--setenv PRIVATE_NETWORK="$PRIVATE_NETWORK" \
|
||||
--setenv HOST_BRIDGE="$HOST_BRIDGE" \
|
||||
--setenv HOST_ADDRESS="$HOST_ADDRESS" \
|
||||
--setenv LOCAL_ADDRESS="$LOCAL_ADDRESS" \
|
||||
--setenv HOST_ADDRESS6="$HOST_ADDRESS6" \
|
||||
--setenv LOCAL_ADDRESS6="$LOCAL_ADDRESS6" \
|
||||
--setenv HOST_PORT="$HOST_PORT" \
|
||||
--setenv PATH="$PATH" \
|
||||
${optionalString cfg.ephemeral "--ephemeral"} \
|
||||
${if cfg.additionalCapabilities != null && cfg.additionalCapabilities != [] then
|
||||
''--capability="${concatStringsSep "," cfg.additionalCapabilities}"'' else ""
|
||||
} \
|
||||
${if cfg.tmpfs != null && cfg.tmpfs != [] then
|
||||
''--tmpfs=${concatStringsSep " --tmpfs=" cfg.tmpfs}'' else ""
|
||||
} \
|
||||
${containerInit cfg} "''${SYSTEM_PATH:-/nix/var/nix/profiles/system}/init"
|
||||
'';
|
||||
|
||||
preStartScript = cfg:
|
||||
''
|
||||
# Clean up existing machined registration and interfaces.
|
||||
machinectl terminate "$INSTANCE" 2> /dev/null || true
|
||||
|
||||
if [ -n "$HOST_ADDRESS" ] || [ -n "$LOCAL_ADDRESS" ] ||
|
||||
[ -n "$HOST_ADDRESS6" ] || [ -n "$LOCAL_ADDRESS6" ]; then
|
||||
ip link del dev "ve-$INSTANCE" 2> /dev/null || true
|
||||
ip link del dev "vb-$INSTANCE" 2> /dev/null || true
|
||||
fi
|
||||
|
||||
${concatStringsSep "\n" (
|
||||
mapAttrsToList (name: cfg:
|
||||
''ip link del dev ${name} 2> /dev/null || true ''
|
||||
) cfg.extraVeths
|
||||
)}
|
||||
'';
|
||||
|
||||
postStartScript = (cfg:
|
||||
let
|
||||
ipcall = cfg: ipcmd: variable: attribute:
|
||||
if cfg.${attribute} == null then
|
||||
''
|
||||
if [ -n "${variable}" ]; then
|
||||
${ipcmd} add ${variable} dev $ifaceHost
|
||||
fi
|
||||
''
|
||||
else
|
||||
''${ipcmd} add ${cfg.${attribute}} dev $ifaceHost'';
|
||||
renderExtraVeth = name: cfg:
|
||||
if cfg.hostBridge != null then
|
||||
''
|
||||
# Add ${name} to bridge ${cfg.hostBridge}
|
||||
ip link set dev ${name} master ${cfg.hostBridge} up
|
||||
''
|
||||
else
|
||||
''
|
||||
echo "Bring ${name} up"
|
||||
ip link set dev ${name} up
|
||||
# Set IPs and routes for ${name}
|
||||
${optionalString (cfg.hostAddress != null) ''
|
||||
ip addr add ${cfg.hostAddress} dev ${name}
|
||||
''}
|
||||
${optionalString (cfg.hostAddress6 != null) ''
|
||||
ip -6 addr add ${cfg.hostAddress6} dev ${name}
|
||||
''}
|
||||
${optionalString (cfg.localAddress != null) ''
|
||||
ip route add ${cfg.localAddress} dev ${name}
|
||||
''}
|
||||
${optionalString (cfg.localAddress6 != null) ''
|
||||
ip -6 route add ${cfg.localAddress6} dev ${name}
|
||||
''}
|
||||
'';
|
||||
in
|
||||
''
|
||||
if [ -n "$HOST_ADDRESS" ] || [ -n "$LOCAL_ADDRESS" ] ||
|
||||
[ -n "$HOST_ADDRESS6" ] || [ -n "$LOCAL_ADDRESS6" ]; then
|
||||
if [ -z "$HOST_BRIDGE" ]; then
|
||||
ifaceHost=ve-$INSTANCE
|
||||
ip link set dev $ifaceHost up
|
||||
|
||||
${ipcall cfg "ip addr" "$HOST_ADDRESS" "hostAddress"}
|
||||
${ipcall cfg "ip -6 addr" "$HOST_ADDRESS6" "hostAddress6"}
|
||||
${ipcall cfg "ip route" "$LOCAL_ADDRESS" "localAddress"}
|
||||
${ipcall cfg "ip -6 route" "$LOCAL_ADDRESS6" "localAddress6"}
|
||||
fi
|
||||
${concatStringsSep "\n" (mapAttrsToList renderExtraVeth cfg.extraVeths)}
|
||||
fi
|
||||
''
|
||||
);
|
||||
|
||||
serviceDirectives = cfg: {
|
||||
ExecReload = pkgs.writeScript "reload-container"
|
||||
''
|
||||
#! ${pkgs.runtimeShell} -e
|
||||
${pkgs.nixos-container}/bin/nixos-container run "$INSTANCE" -- \
|
||||
bash --login -c "''${SYSTEM_PATH:-/nix/var/nix/profiles/system}/bin/switch-to-configuration test"
|
||||
'';
|
||||
|
||||
SyslogIdentifier = "container %i";
|
||||
|
||||
EnvironmentFile = "-/etc/containers/%i.conf";
|
||||
|
||||
Type = "notify";
|
||||
|
||||
RuntimeDirectory = lib.optional cfg.ephemeral "containers/%i";
|
||||
|
||||
# Note that on reboot, systemd-nspawn returns 133, so this
|
||||
# unit will be restarted. On poweroff, it returns 0, so the
|
||||
# unit won't be restarted.
|
||||
RestartForceExitStatus = "133";
|
||||
SuccessExitStatus = "133";
|
||||
|
||||
# Some containers take long to start
|
||||
# especially when you automatically start many at once
|
||||
TimeoutStartSec = cfg.timeoutStartSec;
|
||||
|
||||
Restart = "on-failure";
|
||||
|
||||
Slice = "machine.slice";
|
||||
Delegate = true;
|
||||
|
||||
# Hack: we don't want to kill systemd-nspawn, since we call
|
||||
# "machinectl poweroff" in preStop to shut down the
|
||||
# container cleanly. But systemd requires sending a signal
|
||||
# (at least if we want remaining processes to be killed
|
||||
# after the timeout). So send an ignored signal.
|
||||
KillMode = "mixed";
|
||||
KillSignal = "WINCH";
|
||||
|
||||
DevicePolicy = "closed";
|
||||
DeviceAllow = map (d: "${d.node} ${d.modifier}") cfg.allowedDevices;
|
||||
};
|
||||
|
||||
|
||||
system = config.nixpkgs.localSystem.system;
|
||||
|
||||
bindMountOpts = { name, ... }: {
|
||||
|
||||
options = {
|
||||
mountPoint = mkOption {
|
||||
example = "/mnt/usb";
|
||||
type = types.str;
|
||||
description = "Mount point on the container file system.";
|
||||
};
|
||||
hostPath = mkOption {
|
||||
default = null;
|
||||
example = "/home/alice";
|
||||
type = types.nullOr types.str;
|
||||
description = "Location of the host path to be mounted.";
|
||||
};
|
||||
isReadOnly = mkOption {
|
||||
default = true;
|
||||
type = types.bool;
|
||||
description = "Determine whether the mounted path will be accessed in read-only mode.";
|
||||
};
|
||||
};
|
||||
|
||||
config = {
|
||||
mountPoint = mkDefault name;
|
||||
};
|
||||
|
||||
};
|
||||
|
||||
allowedDeviceOpts = { ... }: {
|
||||
options = {
|
||||
node = mkOption {
|
||||
example = "/dev/net/tun";
|
||||
type = types.str;
|
||||
description = "Path to device node";
|
||||
};
|
||||
modifier = mkOption {
|
||||
example = "rw";
|
||||
type = types.str;
|
||||
description = ''
|
||||
Device node access modifier. Takes a combination
|
||||
<literal>r</literal> (read), <literal>w</literal> (write), and
|
||||
<literal>m</literal> (mknod). See the
|
||||
<literal>systemd.resource-control(5)</literal> man page for more
|
||||
information.'';
|
||||
};
|
||||
};
|
||||
};
|
||||
|
||||
|
||||
mkBindFlag = d:
|
||||
let flagPrefix = if d.isReadOnly then " --bind-ro=" else " --bind=";
|
||||
mountstr = if d.hostPath != null then "${d.hostPath}:${d.mountPoint}" else "${d.mountPoint}";
|
||||
in flagPrefix + mountstr ;
|
||||
|
||||
mkBindFlags = bs: concatMapStrings mkBindFlag (lib.attrValues bs);
|
||||
|
||||
networkOptions = {
|
||||
hostBridge = mkOption {
|
||||
type = types.nullOr types.str;
|
||||
default = null;
|
||||
example = "br0";
|
||||
description = ''
|
||||
Put the host-side of the veth-pair into the named bridge.
|
||||
Only one of hostAddress* or hostBridge can be given.
|
||||
'';
|
||||
};
|
||||
|
||||
forwardPorts = mkOption {
|
||||
type = types.listOf (types.submodule {
|
||||
options = {
|
||||
protocol = mkOption {
|
||||
type = types.str;
|
||||
default = "tcp";
|
||||
description = "The protocol specifier for port forwarding between host and container";
|
||||
};
|
||||
hostPort = mkOption {
|
||||
type = types.int;
|
||||
description = "Source port of the external interface on host";
|
||||
};
|
||||
containerPort = mkOption {
|
||||
type = types.nullOr types.int;
|
||||
default = null;
|
||||
description = "Target port of container";
|
||||
};
|
||||
};
|
||||
});
|
||||
default = [];
|
||||
example = [ { protocol = "tcp"; hostPort = 8080; containerPort = 80; } ];
|
||||
description = ''
|
||||
List of forwarded ports from host to container. Each forwarded port
|
||||
is specified by protocol, hostPort and containerPort. By default,
|
||||
protocol is tcp and hostPort and containerPort are assumed to be
|
||||
the same if containerPort is not explicitly given.
|
||||
'';
|
||||
};
|
||||
|
||||
|
||||
hostAddress = mkOption {
|
||||
type = types.nullOr types.str;
|
||||
default = null;
|
||||
example = "10.231.136.1";
|
||||
description = ''
|
||||
The IPv4 address assigned to the host interface.
|
||||
(Not used when hostBridge is set.)
|
||||
'';
|
||||
};
|
||||
|
||||
hostAddress6 = mkOption {
|
||||
type = types.nullOr types.str;
|
||||
default = null;
|
||||
example = "fc00::1";
|
||||
description = ''
|
||||
The IPv6 address assigned to the host interface.
|
||||
(Not used when hostBridge is set.)
|
||||
'';
|
||||
};
|
||||
|
||||
localAddress = mkOption {
|
||||
type = types.nullOr types.str;
|
||||
default = null;
|
||||
example = "10.231.136.2";
|
||||
description = ''
|
||||
The IPv4 address assigned to the interface in the container.
|
||||
If a hostBridge is used, this should be given with netmask to access
|
||||
the whole network. Otherwise the default netmask is /32 and routing is
|
||||
set up from localAddress to hostAddress and back.
|
||||
'';
|
||||
};
|
||||
|
||||
localAddress6 = mkOption {
|
||||
type = types.nullOr types.str;
|
||||
default = null;
|
||||
example = "fc00::2";
|
||||
description = ''
|
||||
The IPv6 address assigned to the interface in the container.
|
||||
If a hostBridge is used, this should be given with netmask to access
|
||||
the whole network. Otherwise the default netmask is /128 and routing is
|
||||
set up from localAddress6 to hostAddress6 and back.
|
||||
'';
|
||||
};
|
||||
|
||||
};
|
||||
|
||||
dummyConfig =
|
||||
{
|
||||
extraVeths = {};
|
||||
additionalCapabilities = [];
|
||||
ephemeral = false;
|
||||
timeoutStartSec = "15s";
|
||||
allowedDevices = [];
|
||||
hostAddress = null;
|
||||
hostAddress6 = null;
|
||||
localAddress = null;
|
||||
localAddress6 = null;
|
||||
tmpfs = null;
|
||||
};
|
||||
|
||||
in
|
||||
|
||||
{
|
||||
options = {
|
||||
|
||||
boot.isContainer = mkOption {
|
||||
type = types.bool;
|
||||
default = false;
|
||||
description = ''
|
||||
Whether this NixOS machine is a lightweight container running
|
||||
in another NixOS system.
|
||||
'';
|
||||
};
|
||||
|
||||
boot.enableContainers = mkOption {
|
||||
type = types.bool;
|
||||
default = !config.boot.isContainer;
|
||||
description = ''
|
||||
Whether to enable support for NixOS containers.
|
||||
'';
|
||||
};
|
||||
|
||||
containers = mkOption {
|
||||
type = types.attrsOf (types.submodule (
|
||||
{ config, options, name, ... }:
|
||||
{
|
||||
options = {
|
||||
|
||||
config = mkOption {
|
||||
description = ''
|
||||
A specification of the desired configuration of this
|
||||
container, as a NixOS module.
|
||||
'';
|
||||
type = let
|
||||
confPkgs = if config.pkgs == null then pkgs else config.pkgs;
|
||||
in lib.mkOptionType {
|
||||
name = "Toplevel NixOS config";
|
||||
merge = loc: defs: (import (confPkgs.path + "/nixos/lib/eval-config.nix") {
|
||||
inherit system;
|
||||
pkgs = confPkgs;
|
||||
baseModules = import (confPkgs.path + "/nixos/modules/module-list.nix");
|
||||
inherit (confPkgs) lib;
|
||||
modules =
|
||||
let
|
||||
extraConfig = {
|
||||
_file = "module at ${__curPos.file}:${toString __curPos.line}";
|
||||
config = {
|
||||
boot.isContainer = true;
|
||||
networking.hostName = mkDefault name;
|
||||
networking.useDHCP = false;
|
||||
assertions = [
|
||||
{
|
||||
assertion = config.privateNetwork -> stringLength name < 12;
|
||||
message = ''
|
||||
Container name `${name}` is too long: When `privateNetwork` is enabled, container names can
|
||||
not be longer than 11 characters, because the container's interface name is derived from it.
|
||||
This might be fixed in the future. See https://github.com/NixOS/nixpkgs/issues/38509
|
||||
'';
|
||||
}
|
||||
];
|
||||
};
|
||||
};
|
||||
in [ extraConfig ] ++ (map (x: x.value) defs);
|
||||
prefix = [ "containers" name ];
|
||||
}).config;
|
||||
};
|
||||
};
|
||||
|
||||
path = mkOption {
|
||||
type = types.path;
|
||||
example = "/nix/var/nix/profiles/containers/webserver";
|
||||
description = ''
|
||||
As an alternative to specifying
|
||||
<option>config</option>, you can specify the path to
|
||||
the evaluated NixOS system configuration, typically a
|
||||
symlink to a system profile.
|
||||
'';
|
||||
};
|
||||
|
||||
additionalCapabilities = mkOption {
|
||||
type = types.listOf types.str;
|
||||
default = [];
|
||||
example = [ "CAP_NET_ADMIN" "CAP_MKNOD" ];
|
||||
description = ''
|
||||
Grant additional capabilities to the container. See the
|
||||
capabilities(7) and systemd-nspawn(1) man pages for more
|
||||
information.
|
||||
'';
|
||||
};
|
||||
|
||||
pkgs = mkOption {
|
||||
type = types.nullOr types.attrs;
|
||||
default = null;
|
||||
example = literalExample "pkgs";
|
||||
description = ''
|
||||
Customise which nixpkgs to use for this container.
|
||||
'';
|
||||
};
|
||||
|
||||
ephemeral = mkOption {
|
||||
type = types.bool;
|
||||
default = false;
|
||||
description = ''
|
||||
Runs container in ephemeral mode with the empty root filesystem at boot.
|
||||
This way container will be bootstrapped from scratch on each boot
|
||||
and will be cleaned up on shutdown leaving no traces behind.
|
||||
Useful for completely stateless, reproducible containers.
|
||||
|
||||
Note that this option might require to do some adjustments to the container configuration,
|
||||
e.g. you might want to set
|
||||
<varname>systemd.network.networks.$interface.dhcpConfig.ClientIdentifier</varname> to "mac"
|
||||
if you use <varname>macvlans</varname> option.
|
||||
This way dhcp client identifier will be stable between the container restarts.
|
||||
|
||||
Note that the container journal will not be linked to the host if this option is enabled.
|
||||
'';
|
||||
};
|
||||
|
||||
enableTun = mkOption {
|
||||
type = types.bool;
|
||||
default = false;
|
||||
description = ''
|
||||
Allows the container to create and setup tunnel interfaces
|
||||
by granting the <literal>NET_ADMIN</literal> capability and
|
||||
enabling access to <literal>/dev/net/tun</literal>.
|
||||
'';
|
||||
};
|
||||
|
||||
privateNetwork = mkOption {
|
||||
type = types.bool;
|
||||
default = false;
|
||||
description = ''
|
||||
Whether to give the container its own private virtual
|
||||
Ethernet interface. The interface is called
|
||||
<literal>eth0</literal>, and is hooked up to the interface
|
||||
<literal>ve-<replaceable>container-name</replaceable></literal>
|
||||
on the host. If this option is not set, then the
|
||||
container shares the network interfaces of the host,
|
||||
and can bind to any port on any interface.
|
||||
'';
|
||||
};
|
||||
|
||||
interfaces = mkOption {
|
||||
type = types.listOf types.str;
|
||||
default = [];
|
||||
example = [ "eth1" "eth2" ];
|
||||
description = ''
|
||||
The list of interfaces to be moved into the container.
|
||||
'';
|
||||
};
|
||||
|
||||
macvlans = mkOption {
|
||||
type = types.listOf types.str;
|
||||
default = [];
|
||||
example = [ "eth1" "eth2" ];
|
||||
description = ''
|
||||
The list of host interfaces from which macvlans will be
|
||||
created. For each interface specified, a macvlan interface
|
||||
will be created and moved to the container.
|
||||
'';
|
||||
};
|
||||
|
||||
extraVeths = mkOption {
|
||||
type = with types; attrsOf (submodule { options = networkOptions; });
|
||||
default = {};
|
||||
description = ''
|
||||
Extra veth-pairs to be created for the container
|
||||
'';
|
||||
};
|
||||
|
||||
autoStart = mkOption {
|
||||
type = types.bool;
|
||||
default = false;
|
||||
description = ''
|
||||
Whether the container is automatically started at boot-time.
|
||||
'';
|
||||
};
|
||||
|
||||
timeoutStartSec = mkOption {
|
||||
type = types.str;
|
||||
default = "1min";
|
||||
description = ''
|
||||
Time for the container to start. In case of a timeout,
|
||||
the container processes get killed.
|
||||
See <citerefentry><refentrytitle>systemd.time</refentrytitle>
|
||||
<manvolnum>7</manvolnum></citerefentry>
|
||||
for more information about the format.
|
||||
'';
|
||||
};
|
||||
|
||||
bindMounts = mkOption {
|
||||
type = with types; loaOf (submodule bindMountOpts);
|
||||
default = {};
|
||||
example = literalExample ''
|
||||
{ "/home" = { hostPath = "/home/alice";
|
||||
isReadOnly = false; };
|
||||
}
|
||||
'';
|
||||
|
||||
description =
|
||||
''
|
||||
An extra list of directories that is bound to the container.
|
||||
'';
|
||||
};
|
||||
|
||||
allowedDevices = mkOption {
|
||||
type = with types; listOf (submodule allowedDeviceOpts);
|
||||
default = [];
|
||||
example = [ { node = "/dev/net/tun"; modifier = "rw"; } ];
|
||||
description = ''
|
||||
A list of device nodes to which the containers has access to.
|
||||
'';
|
||||
};
|
||||
|
||||
tmpfs = mkOption {
|
||||
type = types.listOf types.str;
|
||||
default = [];
|
||||
example = [ "/var" ];
|
||||
description = ''
|
||||
Mounts a set of tmpfs file systems into the container.
|
||||
Multiple paths can be specified.
|
||||
Valid items must conform to the --tmpfs argument
|
||||
of systemd-nspawn. See systemd-nspawn(1) for details.
|
||||
'';
|
||||
};
|
||||
|
||||
extraFlags = mkOption {
|
||||
type = types.listOf types.str;
|
||||
default = [];
|
||||
example = [ "--drop-capability=CAP_SYS_CHROOT" ];
|
||||
description = ''
|
||||
Extra flags passed to the systemd-nspawn command.
|
||||
See systemd-nspawn(1) for details.
|
||||
'';
|
||||
};
|
||||
|
||||
} // networkOptions;
|
||||
|
||||
config = mkMerge
|
||||
[
|
||||
(mkIf options.config.isDefined {
|
||||
path = config.config.system.build.toplevel;
|
||||
})
|
||||
];
|
||||
}));
|
||||
|
||||
default = {};
|
||||
example = literalExample
|
||||
''
|
||||
{ webserver =
|
||||
{ path = "/nix/var/nix/profiles/webserver";
|
||||
};
|
||||
database =
|
||||
{ config =
|
||||
{ config, pkgs, ... }:
|
||||
{ services.postgresql.enable = true;
|
||||
services.postgresql.package = pkgs.postgresql_9_6;
|
||||
|
||||
system.stateVersion = "17.03";
|
||||
};
|
||||
};
|
||||
}
|
||||
'';
|
||||
description = ''
|
||||
A set of NixOS system configurations to be run as lightweight
|
||||
containers. Each container appears as a service
|
||||
<literal>container-<replaceable>name</replaceable></literal>
|
||||
on the host system, allowing it to be started and stopped via
|
||||
<command>systemctl</command>.
|
||||
'';
|
||||
};
|
||||
|
||||
};
|
||||
|
||||
|
||||
config = mkIf (config.boot.enableContainers) (let
|
||||
|
||||
unit = {
|
||||
description = "Container '%i'";
|
||||
|
||||
unitConfig.RequiresMountsFor = "/var/lib/containers/%i";
|
||||
|
||||
path = [ pkgs.iproute ];
|
||||
|
||||
environment = {
|
||||
root = "/var/lib/containers/%i";
|
||||
INSTANCE = "%i";
|
||||
};
|
||||
|
||||
preStart = preStartScript dummyConfig;
|
||||
|
||||
script = startScript dummyConfig;
|
||||
|
||||
postStart = postStartScript dummyConfig;
|
||||
|
||||
preStop = "machinectl poweroff $INSTANCE";
|
||||
|
||||
restartIfChanged = false;
|
||||
|
||||
serviceConfig = serviceDirectives dummyConfig;
|
||||
};
|
||||
in {
|
||||
systemd.targets.multi-user.wants = [ "machines.target" ];
|
||||
|
||||
systemd.services = listToAttrs (filter (x: x.value != null) (
|
||||
# The generic container template used by imperative containers
|
||||
[{ name = "container@"; value = unit; }]
|
||||
# declarative containers
|
||||
++ (mapAttrsToList (name: cfg: nameValuePair "container@${name}" (let
|
||||
containerConfig = cfg // (
|
||||
if cfg.enableTun then
|
||||
{
|
||||
allowedDevices = cfg.allowedDevices
|
||||
++ [ { node = "/dev/net/tun"; modifier = "rw"; } ];
|
||||
additionalCapabilities = cfg.additionalCapabilities
|
||||
++ [ "CAP_NET_ADMIN" ];
|
||||
}
|
||||
else {});
|
||||
in
|
||||
recursiveUpdate unit {
|
||||
preStart = preStartScript containerConfig;
|
||||
script = startScript containerConfig;
|
||||
postStart = postStartScript containerConfig;
|
||||
serviceConfig = serviceDirectives containerConfig;
|
||||
unitConfig.RequiresMountsFor = lib.optional (!containerConfig.ephemeral) "/var/lib/containers/%i";
|
||||
environment.root = if containerConfig.ephemeral then "/run/containers/%i" else "/var/lib/containers/%i";
|
||||
} // (
|
||||
if containerConfig.autoStart then
|
||||
{
|
||||
wantedBy = [ "machines.target" ];
|
||||
wants = [ "network.target" ];
|
||||
after = [ "network.target" ];
|
||||
restartTriggers = [
|
||||
containerConfig.path
|
||||
config.environment.etc."containers/${name}.conf".source
|
||||
];
|
||||
restartIfChanged = true;
|
||||
}
|
||||
else {})
|
||||
)) config.containers)
|
||||
));
|
||||
|
||||
# Generate a configuration file in /etc/containers for each
|
||||
# container so that container@.target can get the container
|
||||
# configuration.
|
||||
environment.etc =
|
||||
let mkPortStr = p: p.protocol + ":" + (toString p.hostPort) + ":" + (if p.containerPort == null then toString p.hostPort else toString p.containerPort);
|
||||
in mapAttrs' (name: cfg: nameValuePair "containers/${name}.conf"
|
||||
{ text =
|
||||
''
|
||||
SYSTEM_PATH=${cfg.path}
|
||||
${optionalString cfg.privateNetwork ''
|
||||
PRIVATE_NETWORK=1
|
||||
${optionalString (cfg.hostBridge != null) ''
|
||||
HOST_BRIDGE=${cfg.hostBridge}
|
||||
''}
|
||||
${optionalString (length cfg.forwardPorts > 0) ''
|
||||
HOST_PORT=${concatStringsSep "," (map mkPortStr cfg.forwardPorts)}
|
||||
''}
|
||||
${optionalString (cfg.hostAddress != null) ''
|
||||
HOST_ADDRESS=${cfg.hostAddress}
|
||||
''}
|
||||
${optionalString (cfg.hostAddress6 != null) ''
|
||||
HOST_ADDRESS6=${cfg.hostAddress6}
|
||||
''}
|
||||
${optionalString (cfg.localAddress != null) ''
|
||||
LOCAL_ADDRESS=${cfg.localAddress}
|
||||
''}
|
||||
${optionalString (cfg.localAddress6 != null) ''
|
||||
LOCAL_ADDRESS6=${cfg.localAddress6}
|
||||
''}
|
||||
''}
|
||||
INTERFACES="${toString cfg.interfaces}"
|
||||
MACVLANS="${toString cfg.macvlans}"
|
||||
${optionalString cfg.autoStart ''
|
||||
AUTO_START=1
|
||||
''}
|
||||
EXTRA_NSPAWN_FLAGS="${mkBindFlags cfg.bindMounts +
|
||||
optionalString (cfg.extraFlags != [])
|
||||
(" " + concatStringsSep " " cfg.extraFlags)}"
|
||||
'';
|
||||
}) config.containers;
|
||||
|
||||
# Generate /etc/hosts entries for the containers.
|
||||
networking.extraHosts = concatStrings (mapAttrsToList (name: cfg: optionalString (cfg.localAddress != null)
|
||||
''
|
||||
${head (splitString "/" cfg.localAddress)} ${name}.containers
|
||||
'') config.containers);
|
||||
|
||||
networking.dhcpcd.denyInterfaces = [ "ve-*" "vb-*" ];
|
||||
|
||||
services.udev.extraRules = optionalString config.networking.networkmanager.enable ''
|
||||
# Don't manage interfaces created by nixos-container.
|
||||
ENV{INTERFACE}=="v[eb]-*", ENV{NM_UNMANAGED}="1"
|
||||
'';
|
||||
|
||||
environment.systemPackages = [ pkgs.nixos-container ];
|
||||
|
||||
boot.kernelModules = [
|
||||
"bridge"
|
||||
"macvlan"
|
||||
"tap"
|
||||
"tun"
|
||||
];
|
||||
});
|
||||
}
|
||||
80
nixos/modules/virtualisation/podman.nix
Normal file
80
nixos/modules/virtualisation/podman.nix
Normal file
|
|
@ -0,0 +1,80 @@
|
|||
{ config, lib, pkgs, ... }:
|
||||
let
|
||||
cfg = config.virtualisation.podman;
|
||||
|
||||
inherit (lib) mkOption types;
|
||||
|
||||
# Provides a fake "docker" binary mapping to podman
|
||||
dockerCompat = pkgs.runCommandNoCC "${pkgs.podman.pname}-docker-compat-${pkgs.podman.version}" {
|
||||
outputs = [ "out" "bin" "man" ];
|
||||
inherit (pkgs.podman) meta;
|
||||
} ''
|
||||
mkdir $out
|
||||
|
||||
mkdir -p $bin/bin
|
||||
ln -s ${pkgs.podman.bin}/bin/podman $bin/bin/docker
|
||||
|
||||
mkdir -p $man/share/man/man1
|
||||
for f in ${pkgs.podman.man}/share/man/man1/*; do
|
||||
basename=$(basename $f | sed s/podman/docker/g)
|
||||
ln -s $f $man/share/man/man1/$basename
|
||||
done
|
||||
'';
|
||||
|
||||
# Copy configuration files to avoid having the entire sources in the system closure
|
||||
copyFile = filePath: pkgs.runCommandNoCC (builtins.unsafeDiscardStringContext (builtins.baseNameOf filePath)) {} ''
|
||||
cp ${filePath} $out
|
||||
'';
|
||||
|
||||
in
|
||||
{
|
||||
meta = {
|
||||
maintainers = lib.teams.podman.members;
|
||||
};
|
||||
|
||||
options.virtualisation.podman = {
|
||||
|
||||
enable =
|
||||
mkOption {
|
||||
type = types.bool;
|
||||
default = false;
|
||||
description = ''
|
||||
This option enables Podman, a daemonless container engine for
|
||||
developing, managing, and running OCI Containers on your Linux System.
|
||||
|
||||
It is a drop-in replacement for the <command>docker</command> command.
|
||||
'';
|
||||
};
|
||||
|
||||
dockerCompat = mkOption {
|
||||
type = types.bool;
|
||||
default = false;
|
||||
description = ''
|
||||
Create an alias mapping <command>docker</command> to <command>podman</command>.
|
||||
'';
|
||||
};
|
||||
|
||||
};
|
||||
|
||||
config = lib.mkIf cfg.enable {
|
||||
|
||||
environment.systemPackages = [
|
||||
pkgs.podman # Docker compat
|
||||
pkgs.runc # Default container runtime
|
||||
pkgs.crun # Default container runtime (cgroups v2)
|
||||
pkgs.conmon # Container runtime monitor
|
||||
pkgs.slirp4netns # User-mode networking for unprivileged namespaces
|
||||
pkgs.fuse-overlayfs # CoW for images, much faster than default vfs
|
||||
pkgs.utillinux # nsenter
|
||||
pkgs.cni-plugins # Networking plugins
|
||||
pkgs.iptables
|
||||
]
|
||||
++ lib.optional cfg.dockerCompat dockerCompat;
|
||||
|
||||
environment.etc."cni/net.d/87-podman-bridge.conflist".source = copyFile "${pkgs.podman.src}/cni/87-podman-bridge.conflist";
|
||||
|
||||
virtualisation.containers.enable = true;
|
||||
|
||||
};
|
||||
|
||||
}
|
||||
|
|
@ -248,6 +248,7 @@ in
|
|||
php = handleTest ./php {};
|
||||
plasma5 = handleTest ./plasma5.nix {};
|
||||
plotinus = handleTest ./plotinus.nix {};
|
||||
podman = handleTest ./podman.nix {};
|
||||
postgis = handleTest ./postgis.nix {};
|
||||
postgresql = handleTest ./postgresql.nix {};
|
||||
postgresql-wal-receiver = handleTest ./postgresql-wal-receiver.nix {};
|
||||
|
|
|
|||
30
nixos/tests/podman.nix
Normal file
30
nixos/tests/podman.nix
Normal file
|
|
@ -0,0 +1,30 @@
|
|||
# This test runs podman and checks if simple container starts
|
||||
|
||||
import ./make-test-python.nix (
|
||||
{ pkgs, lib, ... }: {
|
||||
name = "podman";
|
||||
meta = {
|
||||
maintainers = lib.teams.podman.members;
|
||||
};
|
||||
|
||||
nodes = {
|
||||
podman =
|
||||
{ pkgs, ... }:
|
||||
{
|
||||
virtualisation.podman.enable = true;
|
||||
};
|
||||
};
|
||||
|
||||
testScript = ''
|
||||
start_all()
|
||||
|
||||
podman.wait_for_unit("sockets.target")
|
||||
podman.succeed("tar cv --files-from /dev/null | podman import - scratchimg")
|
||||
podman.succeed(
|
||||
"podman run -d --name=sleeping -v /nix/store:/nix/store -v /run/current-system/sw/bin:/bin scratchimg /bin/sleep 10"
|
||||
)
|
||||
podman.succeed("podman ps | grep sleeping")
|
||||
podman.succeed("podman stop sleeping")
|
||||
'';
|
||||
}
|
||||
)
|
||||
Loading…
Reference in a new issue