diff options
Diffstat (limited to 'nixos/modules/services/web-servers/varnish/default.nix')
-rw-r--r-- | nixos/modules/services/web-servers/varnish/default.nix | 115 |
1 files changed, 115 insertions, 0 deletions
diff --git a/nixos/modules/services/web-servers/varnish/default.nix b/nixos/modules/services/web-servers/varnish/default.nix new file mode 100644 index 00000000000..fe817313a99 --- /dev/null +++ b/nixos/modules/services/web-servers/varnish/default.nix @@ -0,0 +1,115 @@ +{ config, lib, pkgs, ...}: + +with lib; + +let + cfg = config.services.varnish; + + commandLine = "-f ${pkgs.writeText "default.vcl" cfg.config}" + + optionalString (cfg.extraModules != []) " -p vmod_path='${makeSearchPathOutput "lib" "lib/varnish/vmods" ([cfg.package] ++ cfg.extraModules)}' -r vmod_path"; +in +{ + options = { + services.varnish = { + enable = mkEnableOption "Varnish Server"; + + enableConfigCheck = mkEnableOption "checking the config during build time" // { default = true; }; + + package = mkOption { + type = types.package; + default = pkgs.varnish; + defaultText = literalExpression "pkgs.varnish"; + description = '' + The package to use + ''; + }; + + http_address = mkOption { + type = types.str; + default = "*:6081"; + description = " + HTTP listen address and port. + "; + }; + + config = mkOption { + type = types.lines; + description = " + Verbatim default.vcl configuration. + "; + }; + + stateDir = mkOption { + type = types.path; + default = "/var/spool/varnish/${config.networking.hostName}"; + defaultText = literalExpression ''"/var/spool/varnish/''${config.networking.hostName}"''; + description = " + Directory holding all state for Varnish to run. + "; + }; + + extraModules = mkOption { + type = types.listOf types.package; + default = []; + example = literalExpression "[ pkgs.varnishPackages.geoip ]"; + description = " + Varnish modules (except 'std'). + "; + }; + + extraCommandLine = mkOption { + type = types.str; + default = ""; + example = "-s malloc,256M"; + description = " + Command line switches for varnishd (run 'varnishd -?' to get list of options) + "; + }; + }; + + }; + + config = mkIf cfg.enable { + + systemd.services.varnish = { + description = "Varnish"; + wantedBy = [ "multi-user.target" ]; + after = [ "network.target" ]; + preStart = '' + mkdir -p ${cfg.stateDir} + chown -R varnish:varnish ${cfg.stateDir} + ''; + postStop = '' + rm -rf ${cfg.stateDir} + ''; + serviceConfig = { + Type = "simple"; + PermissionsStartOnly = true; + ExecStart = "${cfg.package}/sbin/varnishd -a ${cfg.http_address} -n ${cfg.stateDir} -F ${cfg.extraCommandLine} ${commandLine}"; + Restart = "always"; + RestartSec = "5s"; + User = "varnish"; + Group = "varnish"; + AmbientCapabilities = "cap_net_bind_service"; + NoNewPrivileges = true; + LimitNOFILE = 131072; + }; + }; + + environment.systemPackages = [ cfg.package ]; + + # check .vcl syntax at compile time (e.g. before nixops deployment) + system.extraDependencies = mkIf cfg.enableConfigCheck [ + (pkgs.runCommand "check-varnish-syntax" {} '' + ${cfg.package}/bin/varnishd -C ${commandLine} 2> $out || (cat $out; exit 1) + '') + ]; + + users.users.varnish = { + group = "varnish"; + uid = config.ids.uids.varnish; + }; + + users.groups.varnish.gid = config.ids.uids.varnish; + }; +} |