Docker considerations

Content Intelligence Installation Guide

Part Number

The Docker installation folder on each instance must have at least 20 GB available for storing the HCI Docker images.

Make sure that the Docker storage driver is configured correctly on each instance before installing HCI. To view the current Docker storage driver on an instance, run docker info.
Note: After installation, changing the Docker storage driver requires a reinstallation of HCI.

If you are using the Docker devicemapper storage driver:

  • Make sure that there's at least 40 GB of Docker metadata storage space available on each instance. HCI 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, HCI might not have enough space to run.