[[docker]]
== Running Kibana on Docker
Docker images for Kibana are available from the Elastic Docker registry.
The images are shipped with https://www.elastic.co/products/x-pack[X-Pack]
installed.

NOTE: https://www.elastic.co/guide/en/x-pack/current/index.html[X-Pack] is
pre-installed in this image. With X-Pack installed, Kibana expects to
connect to an Elasticsearch cluster that is also runnning X-Pack.

=== Pulling the image
Obtaining Kibana for Docker is as simple as issuing a +docker pull+ command
against the Elastic Docker registry.

ifeval::["{release-state}"=="unreleased"]

However, version {version} of Kibana has not yet been released, so no Docker
image is currently available for this version.

endif::[]

ifeval::["{release-state}"!="unreleased"]

The Docker image for Kibana v{version} can be retrieved with the following
command:

["source","sh",subs="attributes"]
--------------------------------------------
docker pull {docker-image}
--------------------------------------------

endif::[]

=== Configuring Kibana on Docker

The Docker image provides several methods for configuring Kibana. The conventional
approach is to provide a `kibana.yml` file as described in <<settings>>, but it's
also possible to use environment variables to define settings.

==== Bind-mounted configuration

One way to configure Kibana on Docker is to provide `kibana.yml` via bind-mounting.
With +docker-compose+, the bind-mount can be specified like this:

["source","yaml",subs="attributes"]
--------------------------------------------
services:
  kibana:
    image: {docker-image}
    volumes:
      - ./kibana.yml:/usr/share/kibana/config/kibana.yml
--------------------------------------------

==== Environment variable configuration

Under Docker, Kibana can be configured via environment variables. The following
mappings are available:

.Docker Environment Variables
[horizontal]
**Environment Variable**:: **Kibana Setting**
`ELASTICSEARCH_CUSTOMHEADERS`:: `elasticsearch.customHeaders`
`ELASTICSEARCH_PASSWORD`:: `elasticsearch.password`
`ELASTICSEARCH_PINGTIMEOUT`:: `elasticsearch.pingTimeout`
`ELASTICSEARCH_PRESERVEHOST`:: `elasticsearch.preserveHost`
`ELASTICSEARCH_REQUESTHEADERSWHITELIST`:: `elasticsearch.requestHeadersWhitelist`
`ELASTICSEARCH_REQUESTTIMEOUT`:: `elasticsearch.requestTimeout`
`ELASTICSEARCH_SHARDTIMEOUT`:: `elasticsearch.shardTimeout`
`ELASTICSEARCH_SSL_CA`:: `elasticsearch.ssl.ca`
`ELASTICSEARCH_SSL_CERT`:: `elasticsearch.ssl.cert`
`ELASTICSEARCH_SSL_KEY`:: `elasticsearch.ssl.key`
`ELASTICSEARCH_SSL_VERIFY`:: `elasticsearch.ssl.verify`
`ELASTICSEARCH_STARTUPTIMEOUT`:: `elasticsearch.startupTimeout`
`ELASTICSEARCH_URL`:: `elasticsearch.url`
`ELASTICSEARCH_USERNAME`:: `elasticsearch.username`
`KIBANA_DEFAULTAPPID`:: `kibana.defaultAppId`
`KIBANA_INDEX`:: `kibana.index`
`LOGGING_DEST`:: `logging.dest`
`LOGGING_QUIET`:: `logging.quiet`
`LOGGING_SILENT`:: `logging.silent`
`LOGGING_VERBOSE`:: `logging.verbose`
`OPS_INTERVAL`:: `ops.interval`
`PID_FILE`:: `pid.file`
`SERVER_BASEPATH`:: `server.basePath`
`SERVER_HOST`:: `server.host`
`SERVER_MAXPAYLOADBYTES`:: `server.maxPayloadBytes`
`SERVER_NAME`:: `server.name`
`SERVER_PORT`:: `server.port`
`SERVER_SSL_CERT`:: `server.ssl.cert`
`SERVER_SSL_KEY`:: `server.ssl.key`

These variables can be set with +docker-compose+ like this:

["source","yaml",subs="attributes"]
----------------------------------------------------------
services:
  kibana:
    image: {docker-image}
    environment:
      SERVER_NAME: kibana.example.org
      ELASTICSEARCH_URL: http://elasticsearch.example.org
----------------------------------------------------------

Environment variables take precedence over settings configured in `kibana.yml`.

==== Docker defaults
The following settings have different default values when using the Docker image:

[horizontal]
`server.host`:: `"0"`
`elasticsearch.url`:: `http://elasticsearch:9200`
`elasticsearch.username`:: `elastic`
`elasticsearch.password`:: `changeme`