title: Splunk with ECS
body: <p>I am having a problem with configuring Splunk to send logs on ECS Cluster.
  From the event tab in service, this error was there 
  Problem Statement: unable to place a task because no container instance met all of its requirements. The closest matching container-instance xxxx is missing an attribute required by your task.
  after doing a deep drive I found have to update /etc/ecs/ecs.config. and entry echo ECS_AVAILABLE_LOGGING_DRIVERS='["splunk","awslogs"]'.
  But this couldn't help?
  still getting the same error.
  Can anyone please help?</p>