Chris Earle 2bce702f62 [Monitoring] Add Logstash monitoring feature
This PR adds UI for visualizing Logstash internal metrics with contributions from @ph, @jsvd and @pickypg

Changes include:

* x-pack component for Logstash which installs a monitoring exporter plugin to Logstash core. This periodically ships
  monitoring data to the monitoring bulk API endpoint.
* Adds xpack.monitoring.* setting to logstash.yml when x-pack is installed.
* UI changes to graph Logstash monitoring data. Logstash processes are called nodes. They send separate monitoring info
  which gets aggregated and displayed at cluster level and also at individual node level.
* Adds gradle build support for Logstash x-pack which can be controled via `xpack.logstash.build=false`

Fixes 

Original commit: elastic/x-pack-elasticsearch@f58ef406c1
2016-12-30 10:36:11 -08:00
2015-10-30 11:16:29 -06:00
2015-11-25 10:39:08 -05:00
2018-04-20 14:16:58 -07:00

= Elasticsearch X Pack

A set of Elastic's commercial plugins:

- License
- Security
- Watcher
- Monitoring

= Setup
You must checkout x-pack and elasticsearch with a specific directory structure. The
elasticsearch checkout will be used when building x-pack. The structure is:

- /path/to/elastic/elasticsearch
- /path/to/elastic/elasticsearch-extra/x-pack

= Build

- Run unit tests:
+
[source, txt]
-----
gradle clean test
-----

- Run all tests:
+
[source, txt]
-----
gradle clean check
-----

- Run integration tests:
+
[source, txt]
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gradle clean integTest
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- Package X-Pack (wihtout running tests)
+
[source, txt]
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gradle clean assemble
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- Install X-Pack (wihtout running tests)
+
[source, txt]
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gradle clean install
-----

- If you don't work on the UI/Logstash side of x-plugins, you can force gradle to skip building kibana and/or Logstash by adding
  `xpack.kibana.build=false`/`xpack.logstash.build=false` to your `~/.gradle/gradle.properties`. Alternatively you add `-Pxpack.kibana.build=false` or `-Pxpack.logstash.build=false`
  on the command line if you only want to do this on individual builds (or `-Pxpack.kibana.build=true` if you need to
  override having added this to your `gradle.properties`).
Description
🔎 Open source distributed and RESTful search engine.
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