kibana/docs/setup/docker.asciidoc
Toby McLaughlin ee5301f156
Docker docs v6 (#14683)
Update Docker docs for 6.0.0 and image flavours

* Use Compose v2 in Docker examples

* Use US spelling in Docker docs

* Link to www.docker.elastic.co in docs
2017-11-02 15:32:46 +11:00

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[[docker]]
== Running Kibana on Docker
Docker images for Kibana are available from the Elastic Docker registry. The
base image is https://hub.docker.com/_/centos/[centos:7].
A list of all published Docker images and tags can be found at
https://www.docker.elastic.co[www.docker.elastic.co]. The source code can be
found on https://github.com/elastic/elasticsearch-docker/tree/{branch}[GitHub].
=== Image types
The images are available in two different configurations or "flavors". The
`x-pack` flavor, which is the default, ships with X-Pack features
pre-installed. The `oss` flavor does not include X-Pack, and contains only
open-source Kibana.
NOTE: https://www.elastic.co/guide/en/x-pack/current/index.html[X-Pack] is
pre-installed in the default image. With X-Pack installed, Kibana expects to
connect to an Elasticsearch cluster that is also running 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"]
Docker images can be retrieved with the following commands:
["source","txt",subs="attributes"]
--------------------------------------------
docker pull {docker-repo}:{version}
docker pull {docker-repo}-oss:{version}
--------------------------------------------
endif::[]
=== Configuring Kibana on Docker
The Docker images provide several methods for configuring Kibana. The
conventional approach is to provide a `kibana.yml` file as described in
{kibana-ref}/settings.html[Configuring Kibana], but it's also possible to use
environment variables to define settings.
[[docker-bind-mount-config]]
==== 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"]
--------------------------------------------
version: '2'
services:
kibana:
image: {docker-image}
volumes:
- ./kibana.yml:/usr/share/kibana/config/kibana.yml
--------------------------------------------
[[docker-env-config]]
==== Environment variable configuration
Under Docker, Kibana can be configured via environment variables. When
the container starts, a helper process checks the environment for variables that
can be mapped to Kibana command-line arguments.
For compatibility with container orchestration systems, these
environment variables are written in all capitals, with underscores as
word separators. The helper translates these names to valid
Kibana setting names.
Some example translations are shown here:
.Example Docker Environment Variables
[horizontal]
**Environment Variable**:: **Kibana Setting**
`SERVER_NAME`:: `server.name`
`KIBANA_DEFAULTAPPID`:: `kibana.defaultAppId`
`XPACK_MONITORING_ENABLED`:: `xpack.monitoring.enabled`
In general, any setting listed in <<settings>> or
{xpack-ref}/xpack-settings.html[X-Pack Settings] can be configured
with this technique.
These variables can be set with +docker-compose+ like this:
["source","yaml",subs="attributes"]
----------------------------------------------------------
version: '2'
services:
kibana:
image: {docker-image}
environment:
SERVER_NAME: kibana.example.org
ELASTICSEARCH_URL: http://elasticsearch.example.org
----------------------------------------------------------
Since environment variables are translated to CLI arguments, they take
precedence over settings configured in `kibana.yml`.
==== Docker defaults
The following settings have different default values when using the Docker
images:
[horizontal]
`server.name`:: `kibana`
`server.host`:: `"0"`
`elasticsearch.url`:: `http://elasticsearch:9200`
In the `x-pack` image, the following additional defaults are also set:
[horizontal]
`elasticsearch.username`:: `elastic`
`elasticsearch.password`:: `changeme`
`xpack.monitoring.ui.container.elasticsearch.enabled`:: `true`
These settings are defined in the default `kibana.yml`. They can be overridden
with a <<docker-bind-mount-config,custom `kibana.yml`>> or via
<<docker-env-config,environment variables>>.
IMPORTANT: If replacing `kibana.yml` with a custom version, be sure to copy the
above defaults to the custom file if you want to retain them. If not, they will
be "masked" by the new file.