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|
{
config,
lib,
pkgs,
...
}:
let
eachGeth = config.services.geth;
gethOpts =
{
config,
lib,
name,
...
}:
{
options = {
enable = lib.mkEnableOption "Go Ethereum Node";
port = lib.mkOption {
type = lib.types.port;
default = 30303;
description = "Port number Go Ethereum will be listening on, both TCP and UDP.";
};
http = {
enable = lib.mkEnableOption "Go Ethereum HTTP API";
address = lib.mkOption {
type = lib.types.str;
default = "127.0.0.1";
description = "Listen address of Go Ethereum HTTP API.";
};
port = lib.mkOption {
type = lib.types.port;
default = 8545;
description = "Port number of Go Ethereum HTTP API.";
};
apis = lib.mkOption {
type = lib.types.nullOr (lib.types.listOf lib.types.str);
default = null;
description = "APIs to enable over WebSocket";
example = [
"net"
"eth"
];
};
};
websocket = {
enable = lib.mkEnableOption "Go Ethereum WebSocket API";
address = lib.mkOption {
type = lib.types.str;
default = "127.0.0.1";
description = "Listen address of Go Ethereum WebSocket API.";
};
port = lib.mkOption {
type = lib.types.port;
default = 8546;
description = "Port number of Go Ethereum WebSocket API.";
};
apis = lib.mkOption {
type = lib.types.nullOr (lib.types.listOf lib.types.str);
default = null;
description = "APIs to enable over WebSocket";
example = [
"net"
"eth"
];
};
};
authrpc = {
enable = lib.mkEnableOption "Go Ethereum Auth RPC API";
address = lib.mkOption {
type = lib.types.str;
default = "127.0.0.1";
description = "Listen address of Go Ethereum Auth RPC API.";
};
port = lib.mkOption {
type = lib.types.port;
default = 8551;
description = "Port number of Go Ethereum Auth RPC API.";
};
vhosts = lib.mkOption {
type = lib.types.nullOr (lib.types.listOf lib.types.str);
default = [ "localhost" ];
description = "List of virtual hostnames from which to accept requests.";
example = [
"localhost"
"geth.example.org"
];
};
jwtsecret = lib.mkOption {
type = lib.types.str;
default = "";
description = "Path to a JWT secret for authenticated RPC endpoint.";
example = "/var/run/geth/jwtsecret";
};
};
metrics = {
enable = lib.mkEnableOption "Go Ethereum prometheus metrics";
address = lib.mkOption {
type = lib.types.str;
default = "127.0.0.1";
description = "Listen address of Go Ethereum metrics service.";
};
port = lib.mkOption {
type = lib.types.port;
default = 6060;
description = "Port number of Go Ethereum metrics service.";
};
};
network = lib.mkOption {
type = lib.types.nullOr (
lib.types.enum [
"holesky"
"sepolia"
]
);
default = null;
description = "The network to connect to. Mainnet (null) is the default ethereum network.";
};
syncmode = lib.mkOption {
type = lib.types.enum [
"snap"
"fast"
"full"
"light"
];
default = "snap";
description = "Blockchain sync mode.";
};
gcmode = lib.mkOption {
type = lib.types.enum [
"full"
"archive"
];
default = "full";
description = "Blockchain garbage collection mode.";
};
maxpeers = lib.mkOption {
type = lib.types.int;
default = 50;
description = "Maximum peers to connect to.";
};
extraArgs = lib.mkOption {
type = lib.types.listOf lib.types.str;
description = "Additional arguments passed to Go Ethereum.";
default = [ ];
};
package = lib.mkPackageOption pkgs [ "go-ethereum" "geth" ] { };
};
};
in
{
###### interface
options = {
services.geth = lib.mkOption {
type = lib.types.attrsOf (lib.types.submodule gethOpts);
default = { };
description = "Specification of one or more geth instances.";
};
};
###### implementation
config = lib.mkIf (eachGeth != { }) {
environment.systemPackages = lib.flatten (
lib.mapAttrsToList (gethName: cfg: [
cfg.package
]) eachGeth
);
systemd.services = lib.mapAttrs' (
gethName: cfg:
let
stateDir = "goethereum/${gethName}/${if (cfg.network == null) then "mainnet" else cfg.network}";
dataDir = "/var/lib/${stateDir}";
in
(lib.nameValuePair "geth-${gethName}" (
lib.mkIf cfg.enable {
description = "Go Ethereum node (${gethName})";
wantedBy = [ "multi-user.target" ];
after = [ "network.target" ];
serviceConfig = {
ExecStart =
let
args = lib.cli.toCommandLineShellGNU { } {
inherit (cfg)
syncmode
gcmode
port
maxpeers
;
nousb = true;
ipcdisable = true;
datadir = dataDir;
${cfg.network} = true;
http = cfg.http.enable;
"http.addr" = if cfg.http.enable then cfg.http.address else null;
"http.port" = if cfg.http.enable then cfg.http.port else null;
"http.api" = if cfg.http.apis != null then lib.concatStringsSep "," cfg.http.apis else null;
ws = cfg.websocket.enable;
"ws.addr" = if cfg.websocket.enable then cfg.websocket.address else null;
"ws.port" = if cfg.websocket.enable then cfg.websocket.port else null;
"ws.api" = if cfg.websocket.apis != null then lib.concatStringsSep "," cfg.websocket.apis else null;
metrics = cfg.metrics.enable;
"metrics.addr" = if cfg.metrics.enable then cfg.metrics.address else null;
"metrics.port" = if cfg.metrics.enable then cfg.metrics.port else null;
"authrpc.addr" = cfg.authrpc.address;
"authrpc.port" = cfg.authrpc.port;
"authrpc.vhosts" = lib.concatStringsSep "," cfg.authrpc.vhosts;
"authrpc.jwtsecret" =
if cfg.authrpc.jwtsecret != "" then cfg.authrpc.jwtsecret else "${dataDir}/geth/jwtsecret";
};
in
"${lib.getExe cfg.package} ${args} ${lib.escapeShellArgs cfg.extraArgs}";
DynamicUser = true;
Restart = "always";
StateDirectory = stateDir;
# Hardening measures
PrivateTmp = "true";
ProtectSystem = "full";
NoNewPrivileges = "true";
PrivateDevices = "true";
MemoryDenyWriteExecute = "true";
};
}
))
) eachGeth;
};
}
|
