Configure Docker on each server or virtual machine

Content Platform for Cloud Scale Administration Guide

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Before installing the product, configure Docker with settings suitable for your environment. For guidance on configuring and running Docker, see the applicable Docker documentation.
  1. Ensure that the Docker installation folder on each instance has at least 20 GB available for storing the product Docker images.
  2. Ensure that the Docker storage driver is configured correctly on each instance. After installation, changing the Docker storage driver needs reinstallation of the product.
    To view the current Docker storage driver on an instance, run: docker info .
  3. To enable SELinux on the system instances, use a Docker storage driver that SELinux supports.
    The storage drivers that SELinux supports differ depending on the Linux distribution you're using. For more information, see the Docker documentation.
  4. If you are using the Docker devicemapper storage driver, ensure that there's at least 40 GB of Docker metadata storage space available on each instance.
    The product needs 20 GB to install successfully and an additional 20 GB to successfully update to a later version.
    To view Docker metadata storage usage on an instance, run: docker info
On a production system, do not run devicemapper in loop-lvm mode. This can cause slow performance or, on certain Linux distributions, the product might not have enough space to run.