feat(loki): enable 7d retention via compactor

infra/loki/loki-config.yml

@@ -16,13 +16,6 @@ common:
     kvstore:
       store: inmemory
 
-query_range:
-  results_cache:
-    cache:
-      embedded_cache:
-        enabled: true
-        max_size_mb: 100
-
 schema_config:
   configs:
     - from: 2020-10-24
@@ -37,11 +30,20 @@ ruler:
   alertmanager_url: http://localhost:9093
 
 limits_config:
+  retention_period: 168h
   reject_old_samples: true
   reject_old_samples_max_age: 168h
   ingestion_rate_mb: 16
-  ingestion_burst_size_mb: 24
+  ingestion_burst_size_mb: 32
+  max_query_series: 5000
   allow_structured_metadata: true
 
+compactor:
+  working_directory: /loki/compactor
+  compaction_interval: 10m
+  retention_enabled: true
+  retention_delete_delay: 2h
+  delete_request_store: filesystem
+
 analytics:
   reporting_enabled: false

tests/test_observability.py

@@ -74,3 +74,10 @@ class TestNvidiaExporter:
         svc = _services()["nvidia-exporter"]
         devices = svc["deploy"]["resources"]["reservations"]["devices"]
         assert any(d.get("driver") == "nvidia" for d in devices)
+
+
+class TestLokiRetention:
+    def test_loki_compactor_configured(self):
+        cfg = yaml.safe_load((ROOT / "infra/loki/loki-config.yml").read_text())
+        assert cfg["compactor"]["retention_enabled"] is True
+        assert cfg["limits_config"]["retention_period"] == "168h"