journal hostname label

templates/config.alloy.erb

@@ -10,11 +10,14 @@ loki.source.syslog "syslog" {
 
 // Process logs and extract hostname
 loki.process "extract_hostname" {
-  stage.logfmt {}
-
+  stage.logfmt {
+    mapping = {
+      "hostname" = "syslog_hostname",  // Extracts the hostname from syslog
+    }
+  }
   stage.labels {
     values = {
-      hostname = "syslog_hostname",
+      "hostname" = "hostname",  // Assigns extracted hostname to the label
     }
   }
   forward_to = [loki.write.loki.receiver]