118 lines
2.8 KiB
Nix
118 lines
2.8 KiB
Nix
# Systemd services for openvswitch
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{ config, lib, pkgs, ... }:
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with lib;
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let
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cfg = config.virtualisation.vswitch;
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in
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{
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options = {
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virtualisation.vswitch.enable = mkOption {
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type = types.bool;
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default = false;
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description =
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''
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Enable Open vSwitch. A configuration
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daemon (ovs-server) will be started.
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'';
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};
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virtualisation.vswitch.package = mkOption {
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type = types.package;
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default = pkgs.openvswitch;
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description =
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''
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Open vSwitch package to use.
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'';
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};
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};
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config = mkIf cfg.enable (let
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# Where the communication sockets live
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runDir = "/var/run/openvswitch";
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# Where the config database live (can't be in nix-store)
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stateDir = "/var/db/openvswitch";
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# The path to the an initialized version of the database
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db = pkgs.stdenv.mkDerivation {
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name = "vswitch.db";
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unpackPhase = "true";
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buildPhase = "true";
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buildInputs = with pkgs; [
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cfg.package
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];
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installPhase =
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''
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ensureDir $out/
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'';
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};
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in {
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environment.systemPackages = [ cfg.package ];
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boot.kernelModules = [ "tun" "openvswitch" ];
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boot.extraModulePackages = [ cfg.package ];
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systemd.services.ovsdb = {
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description = "Open_vSwitch Database Server";
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wantedBy = [ "multi-user.target" ];
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after = [ "systemd-udev-settle.service" ];
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wants = [ "vswitchd.service" ];
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path = [ cfg.package ];
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restartTriggers = [ db cfg.package ];
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# Create the config database
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preStart =
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''
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mkdir -p ${runDir}
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mkdir -p /var/db/openvswitch
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chmod +w /var/db/openvswitch
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if [[ ! -e /var/db/openvswitch/conf.db ]]; then
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${cfg.package}/bin/ovsdb-tool create \
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"/var/db/openvswitch/conf.db" \
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"${cfg.package}/share/openvswitch/vswitch.ovsschema"
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fi
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chmod -R +w /var/db/openvswitch
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'';
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serviceConfig.ExecStart =
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''
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${cfg.package}/bin/ovsdb-server \
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--remote=punix:${runDir}/db.sock \
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--private-key=db:Open_vSwitch,SSL,private_key \
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--certificate=db:Open_vSwitch,SSL,certificate \
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--bootstrap-ca-cert=db:Open_vSwitch,SSL,ca_cert \
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--unixctl=ovsdb.ctl.sock \
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/var/db/openvswitch/conf.db
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'';
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serviceConfig.Restart = "always";
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serviceConfig.RestartSec = 3;
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postStart =
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''
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${cfg.package}/bin/ovs-vsctl --timeout 3 --retry --no-wait init
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'';
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};
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systemd.services.vswitchd = {
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description = "Open_vSwitch Daemon";
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bindsTo = [ "ovsdb.service" ];
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after = [ "ovsdb.service" ];
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path = [ cfg.package ];
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serviceConfig.ExecStart = ''${cfg.package}/bin/ovs-vswitchd'';
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};
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});
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}
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