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84 lines
2.4 KiB
84 lines
2.4 KiB
{ config, lib, pkgs, ... }:
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with lib;
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let
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cfg = config.services.envoy;
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format = pkgs.formats.json { };
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conf = format.generate "envoy.json" cfg.settings;
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validateConfig = file:
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pkgs.runCommand "validate-envoy-conf" { } ''
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${pkgs.envoy}/bin/envoy --log-level error --mode validate -c "${file}"
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cp "${file}" "$out"
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'';
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in
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{
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options.services.envoy = {
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enable = mkEnableOption "Envoy reverse proxy";
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settings = mkOption {
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type = format.type;
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default = { };
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example = literalExpression ''
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{
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admin = {
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access_log_path = "/dev/null";
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address = {
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socket_address = {
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protocol = "TCP";
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address = "127.0.0.1";
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port_value = 9901;
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};
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};
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};
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static_resources = {
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listeners = [];
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clusters = [];
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};
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}
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'';
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description = ''
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Specify the configuration for Envoy in Nix.
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'';
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};
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};
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config = mkIf cfg.enable {
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environment.systemPackages = [ pkgs.envoy ];
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systemd.services.envoy = {
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description = "Envoy reverse proxy";
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after = [ "network-online.target" ];
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requires = [ "network-online.target" ];
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wantedBy = [ "multi-user.target" ];
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serviceConfig = {
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ExecStart = "${pkgs.envoy}/bin/envoy -c ${validateConfig conf}";
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DynamicUser = true;
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Restart = "no";
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CacheDirectory = "envoy";
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LogsDirectory = "envoy";
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AmbientCapabilities = "CAP_NET_BIND_SERVICE";
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CapabilityBoundingSet = "CAP_NET_BIND_SERVICE";
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RestrictAddressFamilies = "AF_UNIX AF_INET AF_INET6 AF_NETLINK AF_XDP";
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SystemCallArchitectures = "native";
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LockPersonality = true;
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RestrictNamespaces = true;
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RestrictRealtime = true;
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PrivateUsers = false; # breaks CAP_NET_BIND_SERVICE
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PrivateDevices = true;
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ProtectClock = true;
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ProtectControlGroups = true;
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ProtectHome = true;
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ProtectKernelLogs = true;
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ProtectKernelModules = true;
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ProtectKernelTunables = true;
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ProtectProc = "ptraceable";
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ProtectHostname = true;
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ProtectSystem = "strict";
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UMask = "0066";
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SystemCallFilter = "~@clock @module @mount @reboot @swap @obsolete @cpu-emulation";
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};
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};
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};
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}
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