sostituito promtail con alloy

vm2/alloy-config.alloy

@@ -0,0 +1,57 @@
+// Grafana Alloy configuration for VM2
+// Replaces Promtail for log collection and forwarding to Loki
+
+// Discover Docker containers with the logging=promtail label
+discovery.docker "containers" {
+  host = "unix:///var/run/docker.sock"
+  refresh_interval = "5s"
+
+  filter {
+    name   = "label"
+    values = ["logging=alloy"]
+  }
+}
+
+// Scrape logs from discovered containers
+loki.source.docker "docker_logs" {
+  host    = "unix:///var/run/docker.sock"
+  targets = discovery.docker.containers.targets
+
+  forward_to = [loki.write.loki.receiver]
+
+  relabel_rules = loki.relabel.docker.rules
+}
+
+// Relabel configuration to extract useful labels from Docker metadata
+loki.relabel "docker" {
+  forward_to = []
+
+  rule {
+    source_labels = ["__meta_docker_container_name"]
+    regex         = "/(.*)"
+    target_label  = "container"
+  }
+
+  rule {
+    source_labels = ["__meta_docker_container_label_logging_jobname"]
+    target_label  = "job"
+  }
+
+  // Add external labels
+  rule {
+    target_label  = "environment"
+    replacement   = "production"
+  }
+
+  rule {
+    target_label  = "cluster"
+    replacement   = "myapp-cluster"
+  }
+}
+
+// Write logs to Loki
+loki.write "loki" {
+  endpoint {
+    url = "http://192.168.1.200:3100/loki/api/v1/push"
+  }
+}