Delegate host storage requirements

This section provides a quick reference to the block storage requirements of Control Center delegate hosts. For more information, refer to the Control Center Planning Guide.

Control Center cluster hosts need either unformatted block storage devices or partitions, or free space in one or more LVM volume groups.

  • Enter the following command to display information about block storage:
    lsblk -ap --output=NAME,SIZE,TYPE,FSTYPE,MOUNTPOINT
  • Enter the following command to display information about LVM volume groups:
    vgdisplay
The following storage configuration is recommended for delegate hosts:
  • A root filesystem with a minimum of 35GB of storage, formatted with XFS.
  • A dedicated swap area.
  • One or more block devices or partitions, or one or more LVM physical volumes, with a total of 50GB of space. A step in this chapter configures the space as an LVM thin pool for Docker data.