Reenable systemd collectors

nix/modules/nixos/infrastructure/vault-prometheus-sender/prometheus.alloy

@@ -19,7 +19,7 @@ discovery.relabel "integrations_node_exporter" {
 prometheus.exporter.unix "integrations_node_exporter" {
   // Disable unnecessary collectors to reduce overhead
   disable_collectors = ["ipvs", "btrfs", "infiniband", "xfs", "zfs"]
-  enable_collectors = ["meminfo"]
+  enable_collectors = ["meminfo","systemd"]
 
   filesystem {
     // Exclude filesystem types that aren't relevant for monitoring
@@ -39,6 +39,13 @@ prometheus.exporter.unix "integrations_node_exporter" {
     // Exclude virtual and container network interfaces from device metrics
     device_exclude = "^(veth.*|cali.*|[a-f0-9]{15})$"
   }
+
+  systemd {
+    enable_restarts = true
+    start_time = true
+    task_metrics = true
+    unit_include = ".+"
+  }
 }
 
 // Define how to scrape metrics from the node_exporter