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803077ef1c
This change is backwards compatible since the ELK tools at version 5.x remain unchanged. The test suite now both tests ELK-5 and ELK-6.
210 lines
6.0 KiB
Nix
210 lines
6.0 KiB
Nix
{ config, lib, pkgs, ... }:
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with lib;
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let
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cfg = config.services.elasticsearch;
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es5 = builtins.compareVersions (builtins.parseDrvName cfg.package.name).version "5" >= 0;
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es6 = builtins.compareVersions (builtins.parseDrvName cfg.package.name).version "6" >= 0;
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esConfig = ''
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network.host: ${cfg.listenAddress}
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cluster.name: ${cfg.cluster_name}
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${if es5 then ''
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http.port: ${toString cfg.port}
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transport.tcp.port: ${toString cfg.tcp_port}
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'' else ''
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network.port: ${toString cfg.port}
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network.tcp.port: ${toString cfg.tcp_port}
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# TODO: find a way to enable security manager
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security.manager.enabled: false
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''}
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${cfg.extraConf}
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'';
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configDir = pkgs.buildEnv {
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name = "elasticsearch-config";
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paths = [
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(pkgs.writeTextDir "elasticsearch.yml" esConfig)
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(if es5 then (pkgs.writeTextDir "log4j2.properties" cfg.logging)
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else (pkgs.writeTextDir "logging.yml" cfg.logging))
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];
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# Elasticsearch 5.x won't start when the scripts directory does not exist
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postBuild = if es5 then "${pkgs.coreutils}/bin/mkdir -p $out/scripts" else "";
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};
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esPlugins = pkgs.buildEnv {
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name = "elasticsearch-plugins";
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paths = cfg.plugins;
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# Elasticsearch 5.x won't start when the plugins directory does not exist
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postBuild = if es5 then "${pkgs.coreutils}/bin/mkdir -p $out/plugins" else "";
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};
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in {
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###### interface
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options.services.elasticsearch = {
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enable = mkOption {
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description = "Whether to enable elasticsearch.";
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default = false;
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type = types.bool;
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};
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package = mkOption {
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description = "Elasticsearch package to use.";
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default = pkgs.elasticsearch2;
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defaultText = "pkgs.elasticsearch2";
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type = types.package;
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};
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listenAddress = mkOption {
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description = "Elasticsearch listen address.";
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default = "127.0.0.1";
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type = types.str;
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};
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port = mkOption {
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description = "Elasticsearch port to listen for HTTP traffic.";
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default = 9200;
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type = types.int;
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};
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tcp_port = mkOption {
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description = "Elasticsearch port for the node to node communication.";
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default = 9300;
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type = types.int;
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};
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cluster_name = mkOption {
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description = "Elasticsearch name that identifies your cluster for auto-discovery.";
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default = "elasticsearch";
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type = types.str;
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};
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extraConf = mkOption {
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description = "Extra configuration for elasticsearch.";
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default = "";
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type = types.str;
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example = ''
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node.name: "elasticsearch"
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node.master: true
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node.data: false
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'';
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};
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logging = mkOption {
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description = "Elasticsearch logging configuration.";
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default =
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if es5 then ''
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logger.action.name = org.elasticsearch.action
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logger.action.level = info
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appender.console.type = Console
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appender.console.name = console
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appender.console.layout.type = PatternLayout
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appender.console.layout.pattern = [%d{ISO8601}][%-5p][%-25c{1.}] %marker%m%n
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rootLogger.level = info
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rootLogger.appenderRef.console.ref = console
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'' else ''
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rootLogger: INFO, console
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logger:
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action: INFO
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com.amazonaws: WARN
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appender:
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console:
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type: console
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layout:
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type: consolePattern
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conversionPattern: "[%d{ISO8601}][%-5p][%-25c] %m%n"
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'';
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type = types.str;
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};
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dataDir = mkOption {
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type = types.path;
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default = "/var/lib/elasticsearch";
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description = ''
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Data directory for elasticsearch.
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'';
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};
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extraCmdLineOptions = mkOption {
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description = "Extra command line options for the elasticsearch launcher.";
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default = [];
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type = types.listOf types.str;
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};
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extraJavaOptions = mkOption {
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description = "Extra command line options for Java.";
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default = [];
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type = types.listOf types.str;
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example = [ "-Djava.net.preferIPv4Stack=true" ];
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};
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plugins = mkOption {
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description = "Extra elasticsearch plugins";
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default = [];
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type = types.listOf types.package;
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};
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};
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###### implementation
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config = mkIf cfg.enable {
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systemd.services.elasticsearch = {
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description = "Elasticsearch Daemon";
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wantedBy = [ "multi-user.target" ];
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after = [ "network.target" ];
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path = [ pkgs.inetutils ];
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environment = {
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ES_HOME = cfg.dataDir;
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ES_JAVA_OPTS = toString ( optional (!es6) [ "-Des.path.conf=${configDir}" ]
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++ cfg.extraJavaOptions);
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} // optionalAttrs es6 {
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ES_PATH_CONF = configDir;
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};
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serviceConfig = {
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ExecStart = "${cfg.package}/bin/elasticsearch ${toString cfg.extraCmdLineOptions}";
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User = "elasticsearch";
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PermissionsStartOnly = true;
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LimitNOFILE = "1024000";
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};
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preStart = ''
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${optionalString (!config.boot.isContainer) ''
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# Only set vm.max_map_count if lower than ES required minimum
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# This avoids conflict if configured via boot.kernel.sysctl
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if [ `${pkgs.procps}/bin/sysctl -n vm.max_map_count` -lt 262144 ]; then
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${pkgs.procps}/bin/sysctl -w vm.max_map_count=262144
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fi
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''}
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mkdir -m 0700 -p ${cfg.dataDir}
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# Install plugins
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ln -sfT ${esPlugins}/plugins ${cfg.dataDir}/plugins
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ln -sfT ${cfg.package}/lib ${cfg.dataDir}/lib
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ln -sfT ${cfg.package}/modules ${cfg.dataDir}/modules
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if [ "$(id -u)" = 0 ]; then chown -R elasticsearch ${cfg.dataDir}; fi
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'';
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};
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environment.systemPackages = [ cfg.package ];
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users = {
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groups.elasticsearch.gid = config.ids.gids.elasticsearch;
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users.elasticsearch = {
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uid = config.ids.uids.elasticsearch;
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description = "Elasticsearch daemon user";
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home = cfg.dataDir;
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group = "elasticsearch";
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};
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};
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};
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}
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