Puppet Dashboard Error – getaddrinfo: Name or service not known (SocketError)

While configuring the Puppet Dashboard for your Puppet Instance, you might get this kind of error

/usr/lib/ruby/1.8/webrick/utils.rb:63:in `getaddrinfo’: getaddrinfo: Name or service not known (SocketError)

[2015-05-17 19:48:38] INFO  ruby 1.8.7 (2011-06-30) [x86_64-linux]
/usr/lib/ruby/1.8/webrick/utils.rb:63:in `getaddrinfo': getaddrinfo: Name or service not known (SocketError)
        from /usr/lib/ruby/1.8/webrick/utils.rb:63:in `create_listeners'
        from /usr/lib/ruby/1.8/webrick/server.rb:75:in `listen'
        from /usr/lib/ruby/1.8/webrick/server.rb:63:in `initialize'
        from /usr/lib/ruby/1.8/webrick/httpserver.rb:24:in `initialize'
        from /usr/share/puppet-dashboard/script/../config/../vendor/gems/rack-1.1.6/lib/rack/handler/webrick.rb:10:in `new'
        from /usr/share/puppet-dashboard/script/../config/../vendor/gems/rack-1.1.6/lib/rack/handler/webrick.rb:10:in `run'
        from /customer/product/puppet-dashboard/vendor/rails/railties/lib/commands/server.rb:111
        from /usr/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in `gem_original_require'
        from /usr/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in `require'
        from /usr/share/puppet-dashboard/script/server:3
=> Booting WEBrick
=> Rails 2.3.17 application starting on http://{DASHBOARD_IFACE}:8089
=> Call with -d to detach
=> Ctrl-C to shutdown server

I faced this error because of very silly mistake.

This error comes when the server name is not correctly specified.

I had missed the $ symbol in front of DASHBOARD_IFACE in dashboard conf file as you can see through the error message.

Once I corrected it in the conf file, my dashboard was up and running …..