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Configuring Kibana on Docker

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Configuring Kibana on Docker

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The Docker image provides 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.

Bind-mounted configuration

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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:

services:
  kibana:
    image: docker.elastic.co/kibana/kibana:5.4.3
    volumes:
      - ./kibana.yml:/usr/share/kibana/config/kibana.yml

Environment variable configuration

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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:

Table 1. Example Docker Environment Variables

Environment Variable	Kibana Setting
`SERVER_NAME`	`server.name`
`KIBANA_DEFAULTAPPID`	`kibana.defaultAppId`
`XPACK_MONITORING_ENABLED`	`xpack.monitoring.enabled`

In general, any setting listed in Configuring Kibana or X-Pack Settings can be configured with this technique.

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

services:
  kibana:
    image: docker.elastic.co/kibana/kibana:5.4.3
    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

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

`server.host`	`"0"`
`elasticsearch.url`	`http://elasticsearch:9200`
`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 custom kibana.yml or via environment variables.

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