From 54ec8c85d36795cc4cdde6411fbb77212e6c6845 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Th=C3=A9o=20Barnouin?= <theo.barnouin@protonmail.com>
Date: Tue, 13 May 2025 13:50:26 +0200
Subject: [PATCH] Improve Loki config

---
 services/grafana/default.nix | 95 ++++++++++++------------------------
 1 file changed, 30 insertions(+), 65 deletions(-)

diff --git a/services/grafana/default.nix b/services/grafana/default.nix
index 172ff0e..01386de 100644
--- a/services/grafana/default.nix
+++ b/services/grafana/default.nix
@@ -55,20 +55,6 @@ in {
           ];
         };
       };
-      rsyslogd = {
-        enable = true;
-        extraConfig = ''
-          ruleset(name="remote"){
-            action(type="omfwd" Target="localhost" Port="1514" Protocol="tcp" Template="RSYSLOG_SyslogProtocol23Format" TCP_Framing="octet-counted")
-          }
-
-          module(load="imudp")
-          input(type="imudp" port="514" ruleset="remote")
-
-          module(load="imtcp")
-          input(type="imtcp" port="514" ruleset="remote")
-        '';
-      };
       influxdb2 = {
         enable = true;
       };
@@ -270,59 +256,20 @@ in {
       loki = {
         enable = true;
         configuration = {
-          server.http_listen_port = 3100;
-          server.grpc_listen_port = 9096;
           auth_enabled = false;
-          ingester = {
-            lifecycler = {
-              address = "192.168.1.27";
-              ring = {
-                kvstore = {
-                  store = "inmemory";
-                };
-                replication_factor = 1;
-              };
+          server = {
+            http_listen_port = 3100;
+            grpc_listen_port = 9096;
+          };
+          common = {
+            instance_addr = "0.0.0.0";
+            path_prefix = "/tmp/loki";
+            storage.filesystem = {
+              chunks_directory = "/tmp/loki/chunks";
+              rules_directory = "/tmp/loki/rules";
             };
-            chunk_idle_period = "1h";
-            max_chunk_age = "1h";
-            chunk_target_size = 999999;
-            chunk_retain_period = "30s";
-          };
-          schema_config = {
-            configs = [
-              {
-                from = "2022-06-06";
-                store = "boltdb-shipper";
-                object_store = "filesystem";
-                schema = "v13";
-                index = {
-                  prefix = "index_";
-                  period = "24h";
-                };
-              }
-            ];
-          };
-          storage_config = {
-            boltdb_shipper = {
-              active_index_directory = "/var/lib/loki/boltdb-shipper-active";
-              cache_location = "/var/lib/loki/boltdb-shipper-cache";
-              cache_ttl = "24h";
-            };
-
-            filesystem = {
-              directory = "/var/lib/loki/chunks";
-            };
-          };
-
-          limits_config = {
-            reject_old_samples = true;
-            reject_old_samples_max_age = "168h";
-            allow_structured_metadata = false;
-          };
-
-          table_manager = {
-            retention_deletes_enabled = false;
-            retention_period = "0s";
+            replication_factor = 1;
+            ring.kvstore.store = "inmemory";
           };
           compactor = {
             working_directory = "/var/lib/loki";
@@ -332,6 +279,24 @@ in {
               };
             };
           };
+          query_range.results_cache.cache.embedded_cache = {
+            enabled = true;
+            max_size_mb = 100;
+          };
+          schema_config.configs = [
+            {
+              from = "2025-05-13";
+              store = "tsdb";
+              object_store = "filesystem";
+              schema = "v13";
+              index = {
+                prefix = "index_";
+                period = "24h";
+              };
+            }
+          ];
+          ruler.alertmanager_url = "http://localhost:9093";
+          analytics.reporting_enabled = false;
         };
       };
       promtail = {