anchor.diff:  
   To install {xpack} in {es}:
   
  -. Run `bin/elasticsearch-plugin install` from `ES_HOME` on each node in your cluster:
  +. Optional: If you want to install {xpack} on a machine that doesn't have
  +internet access:
  +
  +.. Manually download the {xpack} zip file:
  +https://artifacts.elastic.co/downloads/packs/x-pack/x-pack-{version}.zip[
  ++https://artifacts.elastic.co/downloads/packs/x-pack/x-pack-{version}.zip+]
  +(https://artifacts.elastic.co/downloads/packs/x-pack/x-pack-{version}.zip.sha1[sha1])
  ++
  +--
  +NOTE: The plugins for {es}, {kib}, and Logstash are included in the same zip
  +file. If you have already downloaded this file to install {xpack} on one of
  +those other products, you can reuse the same file.
  +
  +--
  +
  +.. Transfer the zip file to a temporary directory on the offline machine. (Do
  +NOT put the file in the {es} plugins directory.)
  +
  +. Run `bin/elasticsearch-plugin install` from `ES_HOME` on each node in your
  +cluster:
   +
   --
   [source,shell]
  
positive.code:       setting the system property `es.path.conf` to the config path via
        `ES_JAVA_OPTS="-Des.path.conf=<path>"` or by setting the
        environment variable `CONF_DIR` via `CONF_DIR=<path>`.
  
  [float]
  [[xpack-installing-offline]]
  === Installing {xpack} on Offline Machines
  The plugin install scripts require direct Internet access to download and
  install {xpack}. If your server doesn’t have Internet access, you
  can manually download and install {xpack}.
  
  To install {xpack} on a machine that doesn't have Internet access:
  
  . Manually download the {xpack} zip file:
  https://artifacts.elastic.co/downloads/packs/x-pack/x-pack-{version}.zip[
  +https://artifacts.elastic.co/downloads/packs/x-pack/x-pack-{version}.zip+]
  (https://artifacts.elastic.co/downloads/packs/x-pack/x-pack-{version}.zip.sha1[sha1])
  
  . Transfer the zip file to a temporary directory on the offline machine. (Do NOT
  put the file in the {es} plugins directory.)
  
  . Run `bin/elasticsearch-plugin install` from the {es} install directory
  and specify the location of the {xpack} zip file. For example:
  +
  --
  ["source","sh",subs="attributes"]
  ----------------------------------------------------------
  bin/elasticsearch-plugin install file:///path/to/file/x-pack-{version}.zip
  ----------------------------------------------------------
  
  NOTE:  You must specify an absolute path to the zip file after the `file://` protocol.
  
  --
  
negative.code: ----------------------------------------------------------
  
  NOTE: If you are using a <<xpack-package-installation, DEB/RPM distribution>>
        of {es}, run the installation with superuser permissions.
  
  The plugin install scripts require direct internet access to download and
  install {xpack}. If your server doesn’t have internet access, specify the
  location of the {xpack} zip file that you downloaded to a temporary directory.
  
  ["source","sh",subs="attributes"]
  ----------------------------------------------------------
  bin/elasticsearch-plugin install file:///path/to/file/x-pack-{version}.zip
  ----------------------------------------------------------
  
  NOTE:  You must specify an absolute path to the zip file after the `file://` protocol.
  
  --
  
  