Refactor

src/main.rs

@@ -15,6 +15,9 @@ struct Args {
     /// IP used
     #[arg(short, long, default_value_t = LOCALHOST.to_string())]
     address: String,
+    /// cluster host
+    #[arg(short, long, num_args(0..))]
+    cluster: String,
 }
 
 #[cfg(test)]