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|
{ config, pkgs, lib, utils, ... }:
let
cfg = config.services.pghero;
settingsFormat = pkgs.formats.yaml { };
settingsFile = settingsFormat.generate "pghero.yaml" cfg.settings;
in
{
options.services.pghero = {
enable = lib.mkEnableOption "PgHero service";
package = lib.mkPackageOption pkgs "pghero" { };
listenAddress = lib.mkOption {
type = lib.types.str;
example = "[::1]:3000";
description = ''
`hostname:port` to listen for HTTP traffic.
This is bound using the systemd socket activation.
'';
};
extraArgs = lib.mkOption {
type = lib.types.listOf lib.types.str;
default = [ ];
description = ''
Additional command-line arguments for the systemd service.
Refer to the [Puma web server documentation] for available arguments.
[Puma web server documentation]: https://puma.io/puma#configuration
'';
};
settings = lib.mkOption {
type = settingsFormat.type;
default = { };
example = {
databases = {
primary = {
url = "<%= ENV['PRIMARY_DATABASE_URL'] %>";
};
};
};
description = ''
PgHero configuration. Refer to the [PgHero documentation] for more
details.
[PgHero documentation]: https://github.com/ankane/pghero/blob/master/guides/Linux.md#multiple-databases
'';
};
environment = lib.mkOption {
type = lib.types.attrsOf lib.types.str;
default = { };
description = ''
Environment variables to set for the service. Secrets should be
specified using {option}`environmentFile`.
'';
};
environmentFiles = lib.mkOption {
type = lib.types.listOf lib.types.path;
default = [ ];
description = ''
File to load environment variables from. Loaded variables override
values set in {option}`environment`.
'';
};
extraGroups = lib.mkOption {
type = lib.types.listOf lib.types.str;
default = [ ];
example = [ "tlskeys" ];
description = ''
Additional groups for the systemd service.
'';
};
};
config = lib.mkIf cfg.enable {
systemd.sockets.pghero = {
unitConfig.Description = "PgHero HTTP socket";
wantedBy = [ "sockets.target" ];
listenStreams = [ cfg.listenAddress ];
};
systemd.services.pghero = {
description = "PgHero performance dashboard for PostgreSQL";
wantedBy = [ "multi-user.target" ];
requires = [ "pghero.socket" ];
after = [ "pghero.socket" "network.target" ];
environment = {
RAILS_ENV = "production";
PGHERO_CONFIG_PATH = settingsFile;
} // cfg.environment;
serviceConfig = {
Type = "notify";
WatchdogSec = "10";
ExecStart = utils.escapeSystemdExecArgs ([
(lib.getExe cfg.package)
"--bind-to-activated-sockets"
"only"
] ++ cfg.extraArgs);
Restart = "always";
WorkingDirectory = "${cfg.package}/share/pghero";
EnvironmentFile = cfg.environmentFiles;
SupplementaryGroups = cfg.extraGroups;
DynamicUser = true;
UMask = "0077";
ProtectHome = true;
ProtectProc = "invisible";
ProcSubset = "pid";
ProtectClock = true;
ProtectHostname = true;
ProtectControlGroups = true;
ProtectKernelLogs = true;
ProtectKernelModules = true;
ProtectKernelTunables = true;
PrivateUsers = true;
PrivateDevices = true;
RestrictRealtime = true;
RestrictNamespaces = true;
RestrictAddressFamilies = [ "AF_INET" "AF_INET6" "AF_UNIX" ];
DeviceAllow = [ "" ];
DevicePolicy = "closed";
CapabilityBoundingSet = [ "" ];
MemoryDenyWriteExecute = true;
LockPersonality = true;
SystemCallArchitectures = "native";
SystemCallErrorNumber = "EPERM";
SystemCallFilter = [ "@system-service" ];
};
};
};
}
|
