nixpkgs/nixos/modules/services/search/kibana.nix
pennae ed673a69db treewide: add defaultText for options with simple cfg.* expression defaults
adds defaultText for options with defaults that use only literals, full config.*
paths, and the cfg shortcut binding.
2021-12-09 01:14:16 +01:00

214 lines
6.0 KiB
Nix

{ config, lib, options, pkgs, ... }:
with lib;
let
cfg = config.services.kibana;
opt = options.services.kibana;
ge7 = builtins.compareVersions cfg.package.version "7" >= 0;
lt6_6 = builtins.compareVersions cfg.package.version "6.6" < 0;
cfgFile = pkgs.writeText "kibana.json" (builtins.toJSON (
(filterAttrsRecursive (n: v: v != null && v != []) ({
server.host = cfg.listenAddress;
server.port = cfg.port;
server.ssl.certificate = cfg.cert;
server.ssl.key = cfg.key;
kibana.index = cfg.index;
kibana.defaultAppId = cfg.defaultAppId;
elasticsearch.url = cfg.elasticsearch.url;
elasticsearch.hosts = cfg.elasticsearch.hosts;
elasticsearch.username = cfg.elasticsearch.username;
elasticsearch.password = cfg.elasticsearch.password;
elasticsearch.ssl.certificate = cfg.elasticsearch.cert;
elasticsearch.ssl.key = cfg.elasticsearch.key;
elasticsearch.ssl.certificateAuthorities = cfg.elasticsearch.certificateAuthorities;
} // cfg.extraConf)
)));
in {
options.services.kibana = {
enable = mkEnableOption "kibana service";
listenAddress = mkOption {
description = "Kibana listening host";
default = "127.0.0.1";
type = types.str;
};
port = mkOption {
description = "Kibana listening port";
default = 5601;
type = types.int;
};
cert = mkOption {
description = "Kibana ssl certificate.";
default = null;
type = types.nullOr types.path;
};
key = mkOption {
description = "Kibana ssl key.";
default = null;
type = types.nullOr types.path;
};
index = mkOption {
description = "Elasticsearch index to use for saving kibana config.";
default = ".kibana";
type = types.str;
};
defaultAppId = mkOption {
description = "Elasticsearch default application id.";
default = "discover";
type = types.str;
};
elasticsearch = {
url = mkOption {
description = ''
Elasticsearch url.
Defaults to <literal>"http://localhost:9200"</literal>.
Don't set this when using Kibana >= 7.0.0 because it will result in a
configuration error. Use <option>services.kibana.elasticsearch.hosts</option>
instead.
'';
default = null;
type = types.nullOr types.str;
};
hosts = mkOption {
description = ''
The URLs of the Elasticsearch instances to use for all your queries.
All nodes listed here must be on the same cluster.
Defaults to <literal>[ "http://localhost:9200" ]</literal>.
This option is only valid when using kibana >= 6.6.
'';
default = null;
type = types.nullOr (types.listOf types.str);
};
username = mkOption {
description = "Username for elasticsearch basic auth.";
default = null;
type = types.nullOr types.str;
};
password = mkOption {
description = "Password for elasticsearch basic auth.";
default = null;
type = types.nullOr types.str;
};
ca = mkOption {
description = ''
CA file to auth against elasticsearch.
It's recommended to use the <option>certificateAuthorities</option> option
when using kibana-5.4 or newer.
'';
default = null;
type = types.nullOr types.path;
};
certificateAuthorities = mkOption {
description = ''
CA files to auth against elasticsearch.
Please use the <option>ca</option> option when using kibana &lt; 5.4
because those old versions don't support setting multiple CA's.
This defaults to the singleton list [ca] when the <option>ca</option> option is defined.
'';
default = if cfg.elasticsearch.ca == null then [] else [ca];
defaultText = literalExpression ''
if config.${opt.elasticsearch.ca} == null then [ ] else [ ca ]
'';
type = types.listOf types.path;
};
cert = mkOption {
description = "Certificate file to auth against elasticsearch.";
default = null;
type = types.nullOr types.path;
};
key = mkOption {
description = "Key file to auth against elasticsearch.";
default = null;
type = types.nullOr types.path;
};
};
package = mkOption {
description = "Kibana package to use";
default = pkgs.kibana;
defaultText = literalExpression "pkgs.kibana";
type = types.package;
};
dataDir = mkOption {
description = "Kibana data directory";
default = "/var/lib/kibana";
type = types.path;
};
extraConf = mkOption {
description = "Kibana extra configuration";
default = {};
type = types.attrs;
};
};
config = mkIf (cfg.enable) {
assertions = [
{
assertion = ge7 -> cfg.elasticsearch.url == null;
message =
"The option services.kibana.elasticsearch.url has been removed when using kibana >= 7.0.0. " +
"Please use option services.kibana.elasticsearch.hosts instead.";
}
{
assertion = lt6_6 -> cfg.elasticsearch.hosts == null;
message =
"The option services.kibana.elasticsearch.hosts is only valid for kibana >= 6.6.";
}
];
systemd.services.kibana = {
description = "Kibana Service";
wantedBy = [ "multi-user.target" ];
after = [ "network.target" "elasticsearch.service" ];
environment = { BABEL_CACHE_PATH = "${cfg.dataDir}/.babelcache.json"; };
serviceConfig = {
ExecStart =
"${cfg.package}/bin/kibana" +
" --config ${cfgFile}" +
" --path.data ${cfg.dataDir}";
User = "kibana";
WorkingDirectory = cfg.dataDir;
};
};
environment.systemPackages = [ cfg.package ];
users.users.kibana = {
isSystemUser = true;
description = "Kibana service user";
home = cfg.dataDir;
createHome = true;
group = "kibana";
};
users.groups.kibana = {};
};
}