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OpenSearch/docs/plugins/discovery-file.asciidoc

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Documentation for file-based discovery plugin (#20462) Documentation for file-based discovery plugin. Closes #20458
2016-09-13 20:53:10 -04:00
[[discovery-file]]
=== File-Based Discovery Plugin
Move file-based discovery to core (#33241) Today we support a static list of seed hosts in core Elasticsearch, and allow a dynamic list of seed hosts to be provided via a file using the `discovery-file` plugin. In fact the ability to provide a dynamic list of seed hosts is increasingly useful, so this change moves this functionality to core Elasticsearch to avoid the need for a plugin. Furthermore, in order to start up nodes in integration tests we currently assign a known port to each node before startup, which unfortunately sometimes fails if another process grabs the selected port in the meantime. By moving the `discovery-file` functionality into the core product we can use it to avoid this race. This change also moves the expected path to the file from `$ES_PATH_CONF/discovery-file/unicast_hosts.txt` to `$ES_PATH_CONF/unicast_hosts.txt`. An example of this file is not included in distributions. For BWC purposes the plugin still exists, but does nothing more than create the example file in the old location, and issue a warning when it is used. We also continue to support the old location for the file, but warn about its deprecation. Relates #29244 Closes #33030
2018-08-30 01:43:04 -04:00
The functionality provided by the `discovery-file` plugin is now available in
Elasticsearch without requiring a plugin. This plugin still exists to ensure
backwards compatibility, but it will be removed in a future version.
On installation, this plugin creates a file at
`$ES_PATH_CONF/discovery-file/unicast_hosts.txt` that comprises comments that
describe how to use it. It is preferable not to install this plugin and instead
to create this file, and its containing directory, using standard tools.
Documentation for file-based discovery plugin (#20462) Documentation for file-based discovery plugin. Closes #20458
2016-09-13 20:53:10 -04:00
Added "release-state" support to plugin docs
2017-04-20 09:01:37 -04:00
:plugin_name: discovery-file
include::install_remove.asciidoc[]