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{ config, lib, pkgs, ... }:
with lib;
let
cfg = config.services.influxdb;
configOptions = recursiveUpdate {
meta = {
bind-address = ":8088";
commit-timeout = "50ms";
dir = "${cfg.dataDir}/meta";
election-timeout = "1s";
heartbeat-timeout = "1s";
hostname = "localhost";
leader-lease-timeout = "500ms";
retention-autocreate = true;
};
data = {
dir = "${cfg.dataDir}/data";
wal-dir = "${cfg.dataDir}/wal";
max-wal-size = 104857600;
wal-enable-logging = true;
wal-flush-interval = "10m";
wal-partition-flush-delay = "2s";
};
cluster = {
shard-writer-timeout = "5s";
write-timeout = "5s";
};
retention = {
enabled = true;
check-interval = "30m";
};
http = {
enabled = true;
auth-enabled = false;
bind-address = ":8086";
https-enabled = false;
log-enabled = true;
pprof-enabled = false;
write-tracing = false;
};
monitor = {
store-enabled = false;
store-database = "_internal";
store-interval = "10s";
};
admin = {
enabled = true;
bind-address = ":8083";
https-enabled = false;
};
graphite = [{
enabled = false;
}];
udp = [{
enabled = false;
}];
collectd = [{
enabled = false;
typesdb = "${pkgs.collectd-data}/share/collectd/types.db";
database = "collectd_db";
bind-address = ":25826";
}];
opentsdb = [{
enabled = false;
}];
continuous_queries = {
enabled = true;
log-enabled = true;
recompute-previous-n = 2;
recompute-no-older-than = "10m";
compute-runs-per-interval = 10;
compute-no-more-than = "2m";
};
hinted-handoff = {
enabled = true;
dir = "${cfg.dataDir}/hh";
max-size = 1073741824;
max-age = "168h";
retry-rate-limit = 0;
retry-interval = "1s";
};
} cfg.extraConfig;
configFile = pkgs.runCommandLocal "config.toml" {
nativeBuildInputs = [ pkgs.remarshal ];
} ''
remarshal -if json -of toml \
< ${pkgs.writeText "config.json" (builtins.toJSON configOptions)} \
> $out
'';
in
{
###### interface
options = {
services.influxdb = {
enable = mkOption {
default = false;
description = "Whether to enable the influxdb server";
type = types.bool;
};
package = mkOption {
default = pkgs.influxdb;
defaultText = literalExpression "pkgs.influxdb";
description = "Which influxdb derivation to use";
type = types.package;
};
user = mkOption {
default = "influxdb";
description = "User account under which influxdb runs";
type = types.str;
};
group = mkOption {
default = "influxdb";
description = "Group under which influxdb runs";
type = types.str;
};
dataDir = mkOption {
default = "/var/db/influxdb";
description = "Data directory for influxd data files.";
type = types.path;
};
extraConfig = mkOption {
default = {};
description = "Extra configuration options for influxdb";
type = types.attrs;
};
};
};
###### implementation
config = mkIf config.services.influxdb.enable {
systemd.tmpfiles.rules = [
"d '${cfg.dataDir}' 0770 ${cfg.user} ${cfg.group} - -"
];
systemd.services.influxdb = {
description = "InfluxDB Server";
wantedBy = [ "multi-user.target" ];
after = [ "network.target" ];
serviceConfig = {
ExecStart = ''${cfg.package}/bin/influxd -config "${configFile}"'';
User = cfg.user;
Group = cfg.group;
};
postStart =
let
scheme = if configOptions.http.https-enabled then "-k https" else "http";
bindAddr = (ba: if hasPrefix ":" ba then "127.0.0.1${ba}" else "${ba}")(toString configOptions.http.bind-address);
in
mkBefore ''
until ${pkgs.curl.bin}/bin/curl -s -o /dev/null ${scheme}://${bindAddr}/ping; do
sleep 1;
done
'';
};
users.users = optionalAttrs (cfg.user == "influxdb") {
influxdb = {
uid = config.ids.uids.influxdb;
group = "influxdb";
description = "Influxdb daemon user";
};
};
users.groups = optionalAttrs (cfg.group == "influxdb") {
influxdb.gid = config.ids.gids.influxdb;
};
};
}
|