Grafana_datasource provider not working on CentOS 6

[lukebigum]

The Grafana provider is unable to connect to a local grafana server on CentOS 6 with what looks like an incompatibility with the version of Net::HTTP on CentOS 6. I cannot see where the Hash is coming from, the connection code looks pretty simple.

This Puppet code generates the error below:

grafana_datasource { 'influxdb':
  grafana_url      => 'http://localhost:3000',
  grafana_user     => 'admin',
  grafana_password => 'admin',
  type             => 'influxdb',
  user             => 'telegraf',
  password         => 'telegraf',
  database         => 'telegraf',
  url              => 'http://localhost:8086',
  access_mode      => 'direct',
  is_default       => true,
  require          => Class[influxdb::server],
}

Error: /Stage[main]/Profile::Statistics::Collection_server/Grafana_datasource[influxdb]: Could not evaluate: can't convert Hash into String
/usr/lib/ruby/1.8/net/http.rb:560:in `initialize'
/usr/lib/ruby/1.8/net/http.rb:560:in `open'
/usr/lib/ruby/1.8/net/http.rb:560:in `connect'
/usr/lib/ruby/1.8/timeout.rb:53:in `timeout'
/usr/lib/ruby/1.8/timeout.rb:101:in `timeout'
/usr/lib/ruby/1.8/net/http.rb:560:in `connect'
/usr/lib/ruby/1.8/net/http.rb:553:in `do_start'
/usr/lib/ruby/1.8/net/http.rb:542:in `start'
/usr/lib/ruby/1.8/net/http.rb:440:in `start'
/var/lib/puppet/lib/puppet/provider/grafana.rb:81:in `send_request'
/var/lib/puppet/lib/puppet/provider/grafana_datasource/grafana.rb:25:in `datasources'
/var/lib/puppet/lib/puppet/provider/grafana_datasource/grafana.rb:63:in `datasource'
/var/lib/puppet/lib/puppet/provider/grafana_datasource/grafana.rb:190:in `exists?'
/usr/lib/ruby/site_ruby/1.8/puppet/property/ensure.rb:81:in `retrieve'
/usr/lib/ruby/site_ruby/1.8/puppet/type.rb:1048:in `retrieve'

[kbon]

I had the same error on CentOS 6.8. Created #115 with a fix which worked for my case.