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nixos/virtualisation.podman: Init module
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@ -40,6 +40,11 @@
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make use of these new options instead.
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</para>
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</listitem>
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<listitem>
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<para>
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There is a new module for Podman(<varname>virtualisation.podman</varname>), a drop-in replacement for the Docker command line.
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</para>
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</listitem>
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</itemizedlist>
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</section>
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@ -997,6 +997,7 @@
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./virtualisation/kvmgt.nix
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./virtualisation/openvswitch.nix
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./virtualisation/parallels-guest.nix
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./virtualisation/podman.nix
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./virtualisation/qemu-guest-agent.nix
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./virtualisation/railcar.nix
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./virtualisation/rkt.nix
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192
nixos/modules/virtualisation/podman.nix
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192
nixos/modules/virtualisation/podman.nix
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{ config, lib, pkgs, ... }:
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let
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cfg = config.virtualisation.podman;
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inherit (lib) mkOption types;
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# Provides a fake "docker" binary mapping to podman
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dockerCompat = pkgs.runCommandNoCC "${pkgs.podman.pname}-docker-compat-${pkgs.podman.version}" {
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outputs = [ "out" "bin" "man" ];
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inherit (pkgs.podman) meta;
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} ''
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mkdir $out
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mkdir -p $bin/bin
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ln -s ${pkgs.podman.bin}/bin/podman $bin/bin/docker
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mkdir -p $man/share/man/man1
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for f in ${pkgs.podman.man}/share/man/man1/*; do
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basename=$(basename $f | sed s/podman/docker/g)
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ln -s $f $man/share/man/man1/$basename
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done
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'';
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# Once https://github.com/NixOS/nixpkgs/pull/75584 is merged we can use the TOML generator
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toTOML = name: value: pkgs.runCommandNoCC name {
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nativeBuildInputs = [ pkgs.remarshal ];
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value = builtins.toJSON value;
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passAsFile = [ "value" ];
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} ''
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json2toml "$valuePath" "$out"
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'';
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# Copy configuration files to avoid having the entire sources in the system closure
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copyFile = filePath: pkgs.runCommandNoCC (builtins.unsafeDiscardStringContext (builtins.baseNameOf filePath)) {} ''
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cp ${filePath} $out
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'';
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in
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{
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options.virtualisation.podman = {
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enable =
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mkOption {
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type = types.bool;
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default = false;
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description = ''
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This option enables Podman, a daemonless container engine for
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developing, managing, and running OCI Containers on your Linux System.
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It is a drop-in replacement for the <command>docker</command> command.
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'';
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};
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dockerCompat = mkOption {
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type = types.bool;
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default = false;
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description = ''
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Create an alias mapping <command>docker</command> to <command>podman</command>.
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'';
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};
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registries = {
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search = mkOption {
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type = types.listOf types.str;
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default = [ "docker.io" "quay.io" ];
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description = ''
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List of repositories to search.
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'';
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};
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insecure = mkOption {
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default = [];
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type = types.listOf types.str;
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description = ''
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List of insecure repositories.
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'';
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};
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block = mkOption {
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default = [];
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type = types.listOf types.str;
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description = ''
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List of blocked repositories.
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'';
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};
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};
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policy = mkOption {
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default = {};
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type = types.attrs;
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example = lib.literalExample ''
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{
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default = [ { type = "insecureAcceptAnything"; } ];
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transports = {
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docker-daemon = {
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"" = [ { type = "insecureAcceptAnything"; } ];
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};
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};
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}
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'';
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description = ''
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Signature verification policy file.
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If this option is empty the default policy file from
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<literal>skopeo</literal> will be used.
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'';
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};
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users = mkOption {
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default = [];
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type = types.listOf types.str;
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description = ''
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List of users to set up subuid/subgid mappings for.
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This is a requirement for running containers in rootless mode.
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'';
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};
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libpod = mkOption {
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default = {};
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description = "Libpod configuration";
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type = types.submodule {
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options = {
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extraConfig = mkOption {
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type = types.lines;
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default = "";
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description = ''
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Extra configuration that should be put in the libpod.conf
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configuration file
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'';
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};
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};
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};
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};
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};
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config = lib.mkIf cfg.enable {
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environment.systemPackages = [
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pkgs.podman # Docker compat
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pkgs.runc # Default container runtime
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pkgs.crun # Default container runtime (cgroups v2)
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pkgs.conmon # Container runtime monitor
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pkgs.skopeo # Interact with container registry
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pkgs.slirp4netns # User-mode networking for unprivileged namespaces
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pkgs.fuse-overlayfs # CoW for images, much faster than default vfs
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pkgs.utillinux # nsenter
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pkgs.cni-plugins # Networking plugins
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pkgs.iptables
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]
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++ lib.optional cfg.dockerCompat dockerCompat;
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environment.etc."containers/libpod.conf".text = ''
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cni_plugin_dir = ["${pkgs.cni-plugins}/bin/"]
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cni_config_dir = "/etc/cni/net.d/"
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${cfg.libpod.extraConfig}
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'';
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environment.etc."cni/net.d/87-podman-bridge.conflist".source = copyFile "${pkgs.podman.src}/cni/87-podman-bridge.conflist";
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environment.etc."containers/registries.conf".source = toTOML "registries.conf" {
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registries = lib.mapAttrs (n: v: { registries = v; }) cfg.registries;
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};
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users.extraUsers = builtins.listToAttrs (
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(
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builtins.foldl' (
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acc: user: {
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values = acc.values ++ [
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{
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name = user;
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value = {
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subUidRanges = [ { startUid = acc.offset; count = 65536; } ];
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subGidRanges = [ { startGid = acc.offset; count = 65536; } ];
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};
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}
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];
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offset = acc.offset + 65536;
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}
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)
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{ values = []; offset = 100000; } cfg.users
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).values
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);
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environment.etc."containers/policy.json".source =
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if cfg.policy != {} then pkgs.writeText "policy.json" (builtins.toJSON cfg.policy)
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else copyFile "${pkgs.skopeo.src}/default-policy.json";
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};
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}
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php = handleTest ./php {};
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plasma5 = handleTest ./plasma5.nix {};
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plotinus = handleTest ./plotinus.nix {};
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podman = handleTest ./podman.nix {};
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postgis = handleTest ./postgis.nix {};
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postgresql = handleTest ./postgresql.nix {};
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postgresql-wal-receiver = handleTest ./postgresql-wal-receiver.nix {};
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30
nixos/tests/podman.nix
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30
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# This test runs podman and checks if simple container starts
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import ./make-test-python.nix (
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{ pkgs, ... }: {
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name = "podman";
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meta = with pkgs.stdenv.lib.maintainers; {
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maintainers = [ adisbladis ];
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};
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nodes = {
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podman =
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{ pkgs, ... }:
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{
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virtualisation.podman.enable = true;
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};
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};
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testScript = ''
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start_all()
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podman.wait_for_unit("sockets.target")
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podman.succeed("tar cv --files-from /dev/null | podman import - scratchimg")
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podman.succeed(
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"podman run -d --name=sleeping -v /nix/store:/nix/store -v /run/current-system/sw/bin:/bin scratchimg /bin/sleep 10"
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)
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podman.succeed("podman ps | grep sleeping")
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podman.succeed("podman stop sleeping")
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'';
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}
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)
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