{ config, lib, pkgs, ... }: with lib; let cfg = config.services.influxdb; influxdbConfig = pkgs.writeText "config.toml" '' bind-address = "${cfg.bindAddress}" [logging] level = "info" file = "stdout" [admin] port = ${toString cfg.adminPort} assets = "${pkgs.influxdb}/share/influxdb/admin" [api] port = ${toString cfg.apiPort} ${cfg.apiExtraConfig} [input_plugins] ${cfg.inputPluginsConfig} [raft] dir = "${cfg.dataDir}/raft" ${cfg.raftConfig} [storage] dir = "${cfg.dataDir}/db" ${cfg.storageConfig} [cluster] ${cfg.clusterConfig} [sharding] ${cfg.shardingConfig} [wal] dir = "${cfg.dataDir}/wal" ${cfg.walConfig} ${cfg.extraConfig} ''; in { ###### interface options = { services.influxdb = { enable = mkOption { default = false; description = "Whether to enable the influxdb server"; type = types.bool; }; package = mkOption { default = pkgs.influxdb; description = "Which influxdb derivation to use"; type = types.package; }; user = mkOption { default = "influxdb"; description = "User account under which influxdb runs"; type = types.string; }; group = mkOption { default = "influxdb"; description = "Group under which influxdb runs"; type = types.string; }; dataDir = mkOption { default = "/var/db/influxdb"; description = "Data directory for influxd data files."; type = types.path; }; bindAddress = mkOption { default = "127.0.0.1"; description = "Address where influxdb listens"; type = types.str; }; adminPort = mkOption { default = 8083; description = "The port where influxdb admin listens"; type = types.int; }; apiPort = mkOption { default = 8086; description = "The port where influxdb api listens"; type = types.int; }; apiExtraConfig = mkOption { default = '' read-timeout = "5s" ''; description = "Extra influxdb api configuration"; example = '' ssl-port = 8084 ssl-cert = /path/to/cert.pem read-timeout = "5s" ''; type = types.lines; }; inputPluginsConfig = mkOption { default = ""; description = "Configuration of influxdb extra plugins"; example = '' [input_plugins.graphite] enabled = true port = 2003 database = "graphite" ''; }; raftConfig = mkOption { default = '' port = 8090 ''; description = "Influxdb raft configuration"; type = types.lines; }; storageConfig = mkOption { default = '' write-buffer-size = 10000 ''; description = "Influxdb raft configuration"; type = types.lines; }; clusterConfig = mkOption { default = '' protobuf_port = 8099 protobuf_timeout = "2s" protobuf_heartbeat = "200ms" protobuf_min_backoff = "1s" protobuf_max_backoff = "10s" write-buffer-size = 10000 max-response-buffer-size = 100 concurrent-shard-query-limit = 10 ''; description = "Influxdb cluster configuration"; type = types.lines; }; leveldbConfig = mkOption { default = '' max-open-files = 40 lru-cache-size = "200m" max-open-shards = 0 point-batch-size = 100 write-batch-size = 5000000 ''; description = "Influxdb leveldb configuration"; type = types.lines; }; shardingConfig = mkOption { default = '' replication-factor = 1 [sharding.short-term] duration = "7d" split = 1 [sharding.long-term] duration = "30d" split = 1 ''; description = "Influxdb sharding configuration"; type = types.lines; }; walConfig = mkOption { default = '' flush-after = 1000 bookmark-after = 1000 index-after = 1000 requests-per-logfile = 10000 ''; description = "Influxdb write-ahead log configuration"; type = types.lines; }; extraConfig = mkOption { default = ""; description = "Extra configuration options for influxdb"; type = types.string; }; }; }; ###### implementation config = mkIf config.services.influxdb.enable { systemd.services.influxdb = { description = "InfluxDB Server"; wantedBy = [ "multi-user.target" ]; after = [ "network-interfaces.target" ]; serviceConfig = { ExecStart = ''${cfg.package}/bin/influxdb -config "${influxdbConfig}"''; User = "${cfg.user}"; Group = "${cfg.group}"; PermissionsStartOnly = true; }; preStart = '' mkdir -m 0770 -p ${cfg.dataDir} if [ "$(id -u)" = 0 ]; then chown -R ${cfg.user}:${cfg.group} ${cfg.dataDir}; fi ''; postStart = mkBefore '' until ${pkgs.curl}/bin/curl -s -o /dev/null 'http://${cfg.bindAddress}:${toString cfg.apiPort}/'; do sleep 1; done ''; }; users.extraUsers = optional (cfg.user == "influxdb") { name = "influxdb"; uid = config.ids.uids.influxdb; description = "Influxdb daemon user"; }; users.extraGroups = optional (cfg.group == "influxdb") { name = "influxdb"; gid = config.ids.gids.influxdb; }; }; }