anchor.diff:  
   Log files produced my components (Apache, Tomcat...) managed by Beanstalk are already configured.
   The above config file is only for application specific log files.
  +This agent support multiline logs (like stacktraces, call trace...) provided they start with a whitespace (space, tab). 
  +It's not as powerful as Filebeat or Logstash.
   
   At this point, you'll be able to see logs aggregated from multiple Beanstalk instances in the Cloudwatch console.
   
  
positive.code:     RetentionInDays: 30
  ----
  This sets up the Cloudwatch log agent.
  You can also install it on any EC2 instance with yum:
  
  [source,shell]
  ----
  
negative.code: Using Cloudwatch, it is also possible :
  
  * to raise alerts when a specific pattern is found in logs
  * to extract metrics from logs (HTTP request time, number of 404 errors in Access logs for example) and draw charts
  
  More information can be found https://aws.amazon.com/fr/blogs/aws/cloudwatch-log-service/[here].
  
  