145 lines
4.2 KiB
Nix
145 lines
4.2 KiB
Nix
{ config, lib, pkgs, ... }:
|
|
|
|
with lib;
|
|
|
|
let
|
|
cfg = config.services.etcd;
|
|
|
|
in {
|
|
|
|
options.services.etcd = {
|
|
enable = mkOption {
|
|
description = "Whether to enable etcd.";
|
|
default = false;
|
|
type = types.bool;
|
|
};
|
|
|
|
name = mkOption {
|
|
description = "Etcd unique node name.";
|
|
default = config.networking.hostName;
|
|
type = types.str;
|
|
};
|
|
|
|
advertiseClientUrls = mkOption {
|
|
description = "Etcd list of this member's client URLs to advertise to the rest of the cluster.";
|
|
default = cfg.listenClientUrls;
|
|
type = types.listOf types.str;
|
|
};
|
|
|
|
listenClientUrls = mkOption {
|
|
description = "Etcd list of URLs to listen on for client traffic.";
|
|
default = ["http://localhost:4001"];
|
|
type = types.listOf types.str;
|
|
};
|
|
|
|
listenPeerUrls = mkOption {
|
|
description = "Etcd list of URLs to listen on for peer traffic.";
|
|
default = ["http://localhost:7001"];
|
|
type = types.listOf types.str;
|
|
};
|
|
|
|
initialAdvertisePeerUrls = mkOption {
|
|
description = "Etcd list of this member's peer URLs to advertise to rest of the cluster.";
|
|
default = cfg.listenPeerUrls;
|
|
type = types.listOf types.str;
|
|
};
|
|
|
|
initialCluster = mkOption {
|
|
description = "Etcd initial cluster configuration for bootstrapping.";
|
|
default = ["${cfg.name}=http://localhost:7001"];
|
|
type = types.listOf types.str;
|
|
};
|
|
|
|
initialClusterState = mkOption {
|
|
description = "Etcd initial cluster configuration for bootstrapping.";
|
|
default = "new";
|
|
type = types.enum ["new" "existing"];
|
|
};
|
|
|
|
initialClusterToken = mkOption {
|
|
description = "Etcd initial cluster token for etcd cluster during bootstrap.";
|
|
default = "etcd-cluster";
|
|
type = types.str;
|
|
};
|
|
|
|
discovery = mkOption {
|
|
description = "Etcd discovery url";
|
|
default = "";
|
|
type = types.str;
|
|
};
|
|
|
|
extraConf = mkOption {
|
|
description = ''
|
|
Etcd extra configuration. See
|
|
<link xlink:href='https://github.com/coreos/etcd/blob/master/Documentation/configuration.md#environment-variables' />
|
|
'';
|
|
type = types.attrsOf types.str;
|
|
default = {};
|
|
example = literalExample ''
|
|
{
|
|
"CORS": "*",
|
|
"NAME": "default-name",
|
|
"MAX_RESULT_BUFFER": "1024",
|
|
"MAX_CLUSTER_SIZE": "9",
|
|
"MAX_RETRY_ATTEMPTS": "3"
|
|
}
|
|
'';
|
|
};
|
|
|
|
dataDir = mkOption {
|
|
type = types.path;
|
|
default = "/var/lib/etcd";
|
|
description = "Etcd data directory.";
|
|
};
|
|
};
|
|
|
|
config = mkIf cfg.enable {
|
|
systemd.services.etcd = {
|
|
description = "Etcd Daemon";
|
|
wantedBy = [ "multi-user.target" ];
|
|
after = [ "network-interfaces.target" ];
|
|
|
|
environment = {
|
|
ETCD_NAME = cfg.name;
|
|
ETCD_DISCOVERY = cfg.discovery;
|
|
ETCD_DATA_DIR = cfg.dataDir;
|
|
ETCD_ADVERTISE_CLIENT_URLS = concatStringsSep "," cfg.advertiseClientUrls;
|
|
ETCD_LISTEN_CLIENT_URLS = concatStringsSep "," cfg.listenClientUrls;
|
|
ETCD_LISTEN_PEER_URLS = concatStringsSep "," cfg.listenPeerUrls;
|
|
ETCD_INITIAL_ADVERTISE_PEER_URLS = concatStringsSep "," cfg.initialAdvertisePeerUrls;
|
|
} // (optionalAttrs (cfg.discovery == ""){
|
|
ETCD_INITIAL_CLUSTER = concatStringsSep "," cfg.initialCluster;
|
|
ETCD_INITIAL_CLUSTER_STATE = cfg.initialClusterState;
|
|
ETCD_INITIAL_CLUSTER_TOKEN = cfg.initialClusterToken;
|
|
}) // (mapAttrs' (n: v: nameValuePair "ETCD_${n}" v) cfg.extraConf);
|
|
|
|
serviceConfig = {
|
|
ExecStart = "${pkgs.etcd}/bin/etcd";
|
|
User = "etcd";
|
|
PermissionsStartOnly = true;
|
|
};
|
|
preStart = ''
|
|
mkdir -m 0700 -p ${cfg.dataDir}
|
|
if [ "$(id -u)" = 0 ]; then chown etcd ${cfg.dataDir}; fi
|
|
'';
|
|
postStart = ''
|
|
until ${pkgs.etcdctl}/bin/etcdctl set /nixos/state 'up'; do
|
|
sleep 1;
|
|
done
|
|
until ${pkgs.etcdctl}/bin/etcdctl get /nixos/state | grep up; do
|
|
sleep 1;
|
|
done
|
|
'';
|
|
};
|
|
|
|
environment.systemPackages = [ pkgs.etcdctl ];
|
|
|
|
users.extraUsers = singleton {
|
|
name = "etcd";
|
|
uid = config.ids.uids.etcd;
|
|
description = "Etcd daemon user";
|
|
home = cfg.dataDir;
|
|
};
|
|
};
|
|
}
|