Check your timepicker in Kibana you might have a bad time range.
What is the size of your index? what is the last time data was written to you file?
try to "echo 'This is a test' >> <filename>" see if that comes up in your kibana indexes.
When troubleshooting stuff like this , try installing sense, and run a manual query. Or install Head and browse your data.
But like Mark said your going to have to provide more information as your question is to broad.Or narrow down your question.