infra/modules/apps/loki.nix

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2023-12-05 12:53:33 +00:00
{ config
, lib
, pkgs
, flake
, ...
}: {
# source: https://gist.github.com/rickhull/895b0cb38fdd537c1078a858cf15d63e
# https://grafana.com/docs/loki/latest/configure/examples/#1-local-configuration-exampleyaml
services.loki = {
enable = true;
configuration = {
server.http_listen_port = 3100;
auth_enabled = false;
common = {
ring = {
instance_addr = "127.0.0.1";
kvstore = {
store = "inmemory";
};
};
replication_factor = 1;
path_prefix = "/var/lib/loki";
storage = {
filesystem = {
chunks_directory = "chunks/";
rules_directory = "rules/";
};
};
};
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# Keep logs for 4 weeks
# https://grafana.com/docs/loki/latest/operations/storage/retention/
limits_config.retention_period = "4w";
compactor = {
shared_store = "filesystem";
compaction_interval = "10m";
retention_enabled = true;
retention_delete_delay = "2h";
retention_delete_worker_count = 150;
};
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schema_config = {
configs = [{
from = "2020-05-15";
store = "boltdb-shipper";
object_store = "filesystem";
schema = "v11";
index = {
prefix = "index_";
period = "24h";
};
}];
};
};
};
services.promtail = {
enable = true;
configuration = {
server = {
http_listen_port = 9080;
grpc_listen_port = 0;
};
positions = {
filename = "/tmp/positions.yaml";
};
clients = [{
url = "http://127.0.0.1:${toString config.services.loki.configuration.server.http_listen_port}/loki/api/v1/push";
}];
scrape_configs = [{
job_name = "journal";
journal = {
max_age = "24h";
labels = {
job = "systemd-journal";
host = "flora-6";
};
};
relabel_configs = [{
source_labels = [ "__journal__systemd_unit" ];
target_label = "unit";
}];
}];
};
};
}