From f0224cfac56c54b8cb7e5925bae26c0de8cf15dd Mon Sep 17 00:00:00 2001
From: Adithya Nair <adtya@adtya.xyz>
Date: Sat, 27 Jul 2024 17:33:39 +0530
Subject: [PATCH] all: cleanup loki/promtail

---
 hosts/rico0/services/apps/alertmanager.nix |  2 +-
 hosts/rico0/services/apps/loki-config.yaml | 58 ++++++++++++++++++++++
 hosts/rico0/services/apps/loki.nix         | 49 +-----------------
 hosts/shared/promtail.nix                  |  5 +-
 4 files changed, 62 insertions(+), 52 deletions(-)
 create mode 100644 hosts/rico0/services/apps/loki-config.yaml

diff --git a/hosts/rico0/services/apps/alertmanager.nix b/hosts/rico0/services/apps/alertmanager.nix
index c901258..7764055 100644
--- a/hosts/rico0/services/apps/alertmanager.nix
+++ b/hosts/rico0/services/apps/alertmanager.nix
@@ -3,7 +3,7 @@ _: {
     caddy = {
       virtualHosts."alertmanager.labs.adtya.xyz" = {
         extraConfig = ''
-          reverse_proxy 127.0.0.1:3100
+          reverse_proxy 127.0.0.1:9093
           tls /persist/secrets/caddy/certs/default.crt /persist/secrets/caddy/certs/default.key
         '';
       };
diff --git a/hosts/rico0/services/apps/loki-config.yaml b/hosts/rico0/services/apps/loki-config.yaml
new file mode 100644
index 0000000..f0e6206
--- /dev/null
+++ b/hosts/rico0/services/apps/loki-config.yaml
@@ -0,0 +1,58 @@
+auth_enabled: false
+
+server:
+  http_listen_port: 3100
+  grpc_listen_port: 9096
+  log_level: debug
+  grpc_server_max_concurrent_streams: 1000
+
+common:
+  instance_addr: 127.0.0.1
+  path_prefix: /mnt/data/loki
+  storage:
+    filesystem:
+      chunks_directory: /mnt/data/loki/chunks
+      rules_directory: /mnt/data/loki/rules
+  replication_factor: 1
+  ring:
+    kvstore:
+      store: inmemory
+
+query_range:
+  results_cache:
+    cache:
+      embedded_cache:
+        enabled: true
+        max_size_mb: 100
+
+schema_config:
+  configs:
+    - from: 2020-10-24
+      store: tsdb
+      object_store: filesystem
+      schema: v13
+      index:
+        prefix: index_
+        period: 24h
+
+pattern_ingester:
+  enabled: true
+
+ruler:
+  alertmanager_url: https://alertmanager.labs.adtya.xyz
+
+frontend:
+  encoding: protobuf
+
+# By default, Loki will send anonymous, but uniquely-identifiable usage and configuration
+# analytics to Grafana Labs. These statistics are sent to https://stats.grafana.org/
+#
+# Statistics help us better understand how Loki is used, and they show us performance
+# levels for most users. This helps us prioritize features and documentation.
+# For more information on what's sent, look at
+# https://github.com/grafana/loki/blob/main/pkg/analytics/stats.go
+# Refer to the buildReport method to see what goes into a report.
+#
+# If you would like to disable reporting, uncomment the following lines:
+analytics:
+  reporting_enabled: false
diff --git a/hosts/rico0/services/apps/loki.nix b/hosts/rico0/services/apps/loki.nix
index b2aa0b3..5f8a11a 100644
--- a/hosts/rico0/services/apps/loki.nix
+++ b/hosts/rico0/services/apps/loki.nix
@@ -11,54 +11,7 @@ _: {
     loki = {
       enable = true;
       dataDir = "/mnt/data/loki";
-      configuration = {
-        auth_enabled = false;
-
-        server = {
-          http_listen_port = 3100;
-          log_level = "warn";
-        };
-
-        common = {
-          ring = {
-            instance_addr = "127.0.0.1";
-            kvstore = {
-              store = "inmemory";
-            };
-          };
-          storage = {
-            filesystem = { rules_directory = "/mnt/data/loki/rules"; };
-          };
-          replication_factor = 1;
-          path_prefix = "/mnt/data/loki";
-        };
-
-        schema_config = {
-          configs = [
-            {
-              from = "2024-07-01";
-              store = "tsdb";
-              object_store = "filesystem";
-              schema = "v13";
-              index = { prefix = "index_"; period = "24h"; };
-            }
-          ];
-        };
-
-        storage_config = {
-          filesystem = {
-            directory = "/mnt/data/loki/chunks";
-          };
-        };
-
-        ruler = {
-          alertmanager_url = "https://alertmanager.labs.adtya.xyz";
-        };
-
-        frontend = {
-          encoding = "protobuf";
-        };
-      };
+      configFile = ./loki-config.yaml;
     };
   };
   systemd.services.loki.unitConfig.RequiresMountsFor = [ "/mnt/data" ];
diff --git a/hosts/shared/promtail.nix b/hosts/shared/promtail.nix
index 9ee374d..0e0deb9 100644
--- a/hosts/shared/promtail.nix
+++ b/hosts/shared/promtail.nix
@@ -14,11 +14,11 @@
         server = {
           http_listen_address = "127.0.0.1";
           http_listen_port = 9080;
+          grpc_listen_port = 0;
         };
         clients = [
           {
-            url = "https://loki.labs.adtya.xyz/api/v1/push";
-            tenant_id = 1;
+            url = "https://loki.labs.adtya.xyz/loki/api/v1/push";
           }
         ];
         positions = { filename = "/tmp/promtail-positions.yaml"; };
@@ -29,7 +29,6 @@
               json = false;
               max_age = "12h";
               path = "/var/log/journal";
-              matches = "_TRANSPORT=kernel";
               labels = { job = "systemd-journal"; host = "${config.networking.hostName}"; };
             };
             relabel_configs = [