alloy: node scraper fine tuning to memory consumption reduction

services/monitoring/deploy/alloy/node-scraper/helm-values.yaml

@@ -73,7 +73,7 @@ alloy:
 
       // Read journald logs from the host
       loki.source.journal "journal" {
-        max_age   = "24h"
+        max_age   = "4h"
         relabel_rules = discovery.relabel.host_journal.rules
         forward_to    = [loki.process.host_journal.receiver]
       }
@@ -214,13 +214,20 @@ alloy:
           replacement  = env("SERVICE")
         }
 
+        # trying to reduce memory usage
+        rule {
+          source_labels = ["__name__"]
+          regex         = "container_fs_.*"
+          action        = "drop"
+        }
+
         forward_to = [prometheus.remote_write.metrics_service.receiver]
 
       }
 
       prometheus.scrape "cadvisor" {
         targets = ["localhost:8080"]
-        scrape_interval = "30s"
+        scrape_interval = "60s"
       }
 
       prometheus.remote_write "metrics_service" {