The Managed Metadata Service or Connection is currently not available. The Application Pool or Managed Metadata Web Service may not have been started. Please Contact Your Administrator
View the steps about how you can resolve The Managed Metadata Service or Connection is currently not available -in SharePoint 2013
good article aryan.
you doing a great job
Very nice post. Here is one most expaling the same issue,
http://sureshpydi.blogspot.in/2013/04/there-are-no-addresses-available-for.html