111 lines
3.2 KiB
Nix
111 lines
3.2 KiB
Nix
{ config, lib, pkgs, ... }:
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with lib;
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let
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cfg = config.services.caddy;
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configFile = pkgs.writeText "Caddyfile" cfg.config;
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in {
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options.services.caddy = {
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enable = mkEnableOption "Caddy web server";
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config = mkOption {
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default = "";
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example = ''
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example.com {
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gzip
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minify
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log syslog
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root /srv/http
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}
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'';
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type = types.lines;
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description = "Verbatim Caddyfile to use";
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};
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ca = mkOption {
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default = "https://acme-v02.api.letsencrypt.org/directory";
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example = "https://acme-staging-v02.api.letsencrypt.org/directory";
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type = types.str;
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description = "Certificate authority ACME server. The default (Let's Encrypt production server) should be fine for most people.";
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};
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email = mkOption {
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default = "";
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type = types.str;
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description = "Email address (for Let's Encrypt certificate)";
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};
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agree = mkOption {
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default = false;
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type = types.bool;
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description = "Agree to Let's Encrypt Subscriber Agreement";
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};
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dataDir = mkOption {
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default = "/var/lib/caddy";
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type = types.path;
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description = ''
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The data directory, for storing certificates. Before 17.09, this
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would create a .caddy directory. With 17.09 the contents of the
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.caddy directory are in the specified data directory instead.
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'';
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};
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package = mkOption {
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default = pkgs.caddy;
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defaultText = "pkgs.caddy";
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type = types.package;
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description = "Caddy package to use.";
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};
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};
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config = mkIf cfg.enable {
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systemd.services.caddy = {
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description = "Caddy web server";
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# upstream unit: https://github.com/caddyserver/caddy/blob/master/dist/init/linux-systemd/caddy.service
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after = [ "network-online.target" ];
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wants = [ "network-online.target" ]; # systemd-networkd-wait-online.service
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wantedBy = [ "multi-user.target" ];
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environment = mkIf (versionAtLeast config.system.stateVersion "17.09")
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{ CADDYPATH = cfg.dataDir; };
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serviceConfig = {
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ExecStart = ''
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${cfg.package}/bin/caddy -log stdout -log-timestamps=false \
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-root=/var/tmp -conf=${configFile} \
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-ca=${cfg.ca} -email=${cfg.email} ${optionalString cfg.agree "-agree"}
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'';
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ExecReload = "${pkgs.coreutils}/bin/kill -USR1 $MAINPID";
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Type = "simple";
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User = "caddy";
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Group = "caddy";
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Restart = "on-abnormal";
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StartLimitIntervalSec = 14400;
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StartLimitBurst = 10;
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AmbientCapabilities = "cap_net_bind_service";
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CapabilityBoundingSet = "cap_net_bind_service";
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NoNewPrivileges = true;
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LimitNPROC = 512;
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LimitNOFILE = 1048576;
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PrivateTmp = true;
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PrivateDevices = true;
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ProtectHome = true;
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ProtectSystem = "full";
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ReadWriteDirectories = cfg.dataDir;
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KillMode = "mixed";
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KillSignal = "SIGQUIT";
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TimeoutStopSec = "5s";
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};
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};
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users.users.caddy = {
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group = "caddy";
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uid = config.ids.uids.caddy;
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home = cfg.dataDir;
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createHome = true;
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};
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users.groups.caddy.gid = config.ids.uids.caddy;
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};
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}
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