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|
{
config,
lib,
libNginx,
this,
...
}:
let
cfg = config.nixfiles.modules.loki;
in
{
options.nixfiles.modules.loki = {
enable = lib.mkEnableOption "Loki";
port = lib.mkOption {
description = "Port.";
type = lib.types.port;
default = 30171;
};
domain = lib.mkOption {
description = "Domain name sans protocol scheme.";
type = lib.types.str;
default = "loki.${config.networking.domain}";
};
};
config = lib.mkIf cfg.enable {
ark.directories = [ config.services.loki.configuration.common.path_prefix ];
nixfiles.modules.nginx = {
enable = true;
upstreams.loki.servers."127.0.0.1:${toString cfg.port}" = { };
virtualHosts.${cfg.domain} = {
locations = {
"/".proxyPass = "http://loki";
# "/loki".extraConfig = ''
# rewrite ^/loki/(.*)$ /$1 break;
# '';
};
extraConfig = libNginx.config.internalOnly;
};
};
services.loki = {
enable = true;
configuration = rec {
auth_enabled = false;
server = {
http_listen_address = "127.0.0.1";
http_listen_port = cfg.port;
grpc_listen_address = "0.0.0.0";
grpc_listen_port = server.http_listen_port + 1;
log_format = "logfmt";
log_level = "warn";
log_source_ips_enabled = true;
};
common = {
path_prefix = config.services.loki.dataDir;
storage.filesystem = {
chunks_directory = "${common.path_prefix}/chunks";
rules_directory = "${common.path_prefix}/rules";
};
replication_factor = 1;
ring = {
instance_addr = "127.0.0.1";
kvstore.store = "memberlist";
};
};
memberlist = {
bind_port = 7946;
message_history_buffer_bytes = lib.pow 2 13;
};
compactor = {
working_directory = "${common.path_prefix}/compactor";
retention_enabled = true;
retention_delete_delay = "1h";
retention_delete_worker_count = 64;
delete_request_store = "filesystem";
};
ruler = {
enable_api = true;
storage = {
type = "local";
local.directory = common.storage.filesystem.rules_directory;
};
};
limits_config = {
max_streams_per_user = 0;
max_global_streams_per_user = 0;
max_query_series = 4096;
retention_period = "14d";
deletion_mode = "filter-and-delete";
};
schema_config.configs = [
{
from = "2025-01-01";
object_store = "filesystem";
store = "tsdb";
schema = "v13";
index = {
prefix = "index_";
period = "24h";
};
}
];
analytics.reporting_enabled = false;
};
};
environment.etc."alloy/loki.alloy".text = ''
prometheus.scrape "loki" {
targets = [
{
__address__ = "127.0.0.1:${toString cfg.port}",
instance = "${config.networking.hostName}",
},
]
forward_to = [prometheus.relabel.default.receiver]
}
'';
systemd.services.alloy.reloadTriggers = [ config.environment.etc."alloy/loki.alloy".source ];
topology.nodes.${this.hostname}.services.loki.info = cfg.domain;
};
}
|
