anchor.diff:  To ensure that all settings are in a proper namespace, the `pidfile` setting was
   previously deprecated in version 7.4.0 of Elasticsearch, and is removed in
   version 8.0.0. Instead, use `node.pidfile`.
  +
  +*Impact* +
  +Use the `node.pidfile` setting. Discontinue use of the `pidfile` setting.
  +Specifying the `pidfile` setting in `elasticsearch.yml` will result in an error
  +on startup.
   ====
   
   [[remove-processors]]
  
positive.code: was deprecated in favor of setting `xpack.monitoring.exporters.<exporterName>.auth.secure_password`.
  In Elasticsearch 8.0.0, the setting `xpack.monitoring.exporters.<exporterName>.auth.password` is
  removed.
  ====
  
  .Settings used to disable basic license features have been removed.
  
negative.code: If you have disabled ILM so that you can use another tool to manage Watcher
  indices, the newly introduced `xpack.watcher.use_ilm_index_management` setting
  may be set to false.
  
  *Impact* +
  Discontinue use of the removed settings. Specifying these settings in
  `elasticsearch.yml` will result in an error on startup.
  ====
  
  .The `prefer_v2_templates` parameter now defaults to `true` for several document and index APIs.
  