Sending logs from docker container to FluentD

I have a Docker container and I am sending logs from the docker container to FluentD. Now, I use the FluentD logging driver, but I am having a doubt. On the documentation (link: it says, the maximum size of the FluentD buffer limit is 8MB, but, I want to know how does it exactly function?

  1. Are the logs from Docker container stored in this buffer and then FluentD reads this file?
  2. Also, where exactly is this file stored on my system and how can I view it?
  3. If the file size exceeds 8MB, what happens?

  • Nginx proxy pass configuration docker
  • Kubernetes and network control
  • Docker breaks autofs directory in V1.5, used to work in V1.3.3
  • Where does the convention of using /healthz for application health checks come from?
  • How to expose ports only within the docker network?
  • How to connect docker container via ssh?
  • Comparing Docker Tags
  • AWS EC2 Docker Volumes lsblk
  • How to access tomcat server of windows to building Docker image from Docker file without downloading new tomcat?
  • Creating a new PostgreSQL user in Dockerfile
  • Where to see the logs for a failed deployment on managed Vms on Google App Engine?
  • How to deploy Apache Solr 5x into the Jelastic cloud?
  • One Solution collect form web for “Sending logs from docker container to FluentD”

    The buffer is an in memory byte array so no files are involved.

    The default actually looks like 1MB (1024*1024) as Docker supplies this value rather than relying on the golang fluentd modules default of 8MB.

    When the buffer is full, it is flushed.

    Docker will be the best open platform for developers and sysadmins to build, ship, and run distributed applications.