Add MongoDB/mongod service monitoring and description

agent/src/collectors/service.rs

@@ -439,6 +439,7 @@ impl ServiceCollector {
             "postgresql" | "postgres" => self.get_postgres_connections().await.map(|s| vec![s]),
             "mysql" | "mariadb" => self.get_mysql_connections().await.map(|s| vec![s]),
             "redis" | "redis-immich" => self.get_redis_info().await.map(|s| vec![s]),
+            "mongodb" | "mongod" => self.get_mongodb_info().await.map(|s| vec![s]),
             "gitea" => self.get_gitea_info().await.map(|s| vec![s]),
             "immich-server" | "immich" => self.get_immich_info().await.map(|s| vec![s]),
             "vaultwarden" => self.get_vaultwarden_info().await.map(|s| vec![s]),
@@ -1042,6 +1043,45 @@ impl ServiceCollector {
         
         None
     }
+
+    async fn get_mongodb_info(&self) -> Option<String> {
+        // Check MongoDB connections on port 27017
+        let output = Command::new("/run/current-system/sw/bin/ss")
+            .args(["-tn", "state", "established", "dport", "= :27017"])
+            .stdout(Stdio::piped())
+            .stderr(Stdio::piped())
+            .output()
+            .await
+            .ok()?;
+
+        if output.status.success() {
+            let stdout = String::from_utf8_lossy(&output.stdout);
+            let connection_count = stdout.lines().count().saturating_sub(1);
+            if connection_count > 0 {
+                return Some(format!("{} connections", connection_count));
+            } else {
+                return Some("No connections".to_string());
+            }
+        }
+        
+        // Fallback: check data directory size
+        let output = Command::new("sudo")
+            .args(["/run/current-system/sw/bin/du", "-sh", "/var/lib/mongodb"])
+            .stdout(Stdio::piped())
+            .stderr(Stdio::piped())
+            .output()
+            .await
+            .ok()?;
+
+        if output.status.success() {
+            let stdout = String::from_utf8_lossy(&output.stdout);
+            if let Some(size) = stdout.split_whitespace().next() {
+                return Some(format!("Data: {}", size));
+            }
+        }
+        
+        None
+    }
 }
 
 #[async_trait]

agent/src/discovery.rs

@@ -232,6 +232,7 @@ impl AutoDiscovery {
             "mariadb",
             "redis",
             "mongodb",
+            "mongod",
             // Backup and storage
             "borg",
             "rclone",