update

db/migrate/20160920111650_create_nodes.rb

@@ -0,0 +1,14 @@
+class CreateNodes < ActiveRecord::Migration
+  def change
+    create_table :nodes do |t|
+
+      t.string :host_name
+      t.string :host_ip
+      t.integer :host_port
+      t.string :user_name
+      t.string :user_password
+      
+      t.timestamps null: false
+    end
+  end
+end