anchor.diff:  
   *Git*
   
  -You must have either Internet access and a GitHub account, or read and write access to an internal, HTTP-based Git server.
  +You must have either Internet access and a GitHub account, or read and write
  +access to an internal, HTTP-based Git server.
   
   == Host Preparation
   Before installing OpenShift, you must first prepare each host per the following.
  
positive.code: +
  [WARNING]
  ====
  This will destroy any docker containers or images currently on the host.
  ====
  +
  ----
  
negative.code: accordingly.
  ====
  
  [[configuring-docker-storage]]
  *Configuring Docker Storage*
  
  Docker's default loopback storage mechanism is not supported for production use
  and is only appropriate for proof of concept environments. For production
  environments, you must create a thin-pool logical volume and re-configure Docker
  to use that volume.
  
  You can use the *docker-storage-setup* script to create a thin-pool device and
  configure Docker's storage driver after installing Docker but before you start
  using it. The script reads configuration options from the
  *_/etc/sysconfig/docker-storage-setup_* file. Allocate at least 15 GB of space
  for this purpose no matter which option you choose.
  
  [NOTE]
  ====
  See the https://access.redhat.com/articles/1492923["Managing Storage with Docker
  Formatted Containers on Red Hat Enterprise Linux and Red Hat Enterprise Linux
  Atomic Host"] Knowledgebase article for more details about
  *docker-storage-setup* and basic instructions on storage management in Red Hat
  Enterprise Linux 7.
  ====
  
  . Configure *docker-storage-setup* for your environment. There are three methods
  available based on your storage configuration:
  [[docker-storage-a]]
  .. [[docker-storage-a]]Create a thin-pool volume from the remaining free space in the volume group
  where your root file system resides by running the *docker-storage-setup*
  command with no arguments; this requires no configuration.
  +
  [IMPORTANT]
  ====
  This method will fail if you do not have unpartitioned space available. Ensure
  before running that the amount of unpartitioned space available is actually
  enough to meet link:#system-requirements[your requirements].
  ====
  +
  ----
  # docker-storage-setup
  ----
  +
  If this method does not work as expected for you, see the
  link:#docker-storage-c[third method below], which may require adding a new
  volume to your host.
  +
  .. [[docker-storage-b]]Use an existing volume group, in this example *docker-vg*, to create a
  thin-pool:
  +
  ----
  