Logstash elapsed filter
问题 I am trying to use the elapsed.rb filter in the ELK stack and cant seem to figure it out. I am not very familiar with grok and I believe that is where my issue lives. Can anyone help? Example Log Files: { "application_name": "Application.exe", "machine_name": "Machine1", "user_name": "testuser", "entry_date": "2015-03-12T18:12:23.5187552Z", "chef_environment_name": "chefenvironment1", "chef_logging_cookbook_version": "0.1.9", "logging_level": "INFO", "performance": { "process_name": "account