Where to add jenkins credentials.

[javatechy]

I am new to ruby and dashing. @Edgeware-Lawrence your dashboard works fine. But I am not able to find out where to add jenkins username and password. getting this Error:

scheduler caught exception:
Failed to open TCP connection to http://12.12.23.622:8080 (getaddrinfo: nodename nor servname provided, or not known)
/Users/deepak/.rvm/rubies/ruby-2.4.2/lib/ruby/2.4.0/net/http.rb:906:in `rescue in block in connect'
/Users/deepak/.rvm/rubies/ruby-2.4.2/lib/ruby/2.4.0/net/http.rb:903:in `block in connect'
/Users/deepak/.rvm/rubies/ruby-2.4.2/lib/ruby/2.4.0/timeout.rb:93:in `block in timeout'
/Users/deepak/.rvm/rubies/ruby-2.4.2/lib/ruby/2.4.0/timeout.rb:103:in `timeout'
/Users/deepak/.rvm/rubies/ruby-2.4.2/lib/ruby/2.4.0/net/http.rb:902:in `connect'
/Users/deepak/.rvm/rubies/ruby-2.4.2/lib/ruby/2.4.0/net/http.rb:887:in `do_start'
/Users/deepak/.rvm/rubies/ruby-2.4.2/lib/ruby/2.4.0/net/http.rb:876:in `start'
/Users/deepak/.rvm/rubies/ruby-2.4.2/lib/ruby/2.4.0/net/http.rb:1407:in `request'
/Users/deepak/experiments/dashboard/jobs/jenkins.rb:9:in `block in <top (required)>'
/Users/deepak/.rvm/gems/ruby-2.4.2/gems/rufus-scheduler-2.0.24/lib/rufus/sc/jobs.rb:230:in `trigger_block'
/Users/deepak/.rvm/gems/ruby-2.4.2/gems/rufus-scheduler-2.0.24/lib/rufus/sc/jobs.rb:204:in `block in trigger'
/Users/deepak/.rvm/gems/ruby-2.4.2/gems/rufus-scheduler-2.0.24/lib/rufus/sc/scheduler.rb:430:in `block in trigger_job'