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Examples

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Examples

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Here are some configuration examples for the most common logging use cases:

Log to a file

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Log the default log format to a file instead of to stdout (the default).

logging:
  appenders:
    file:
      type: file
      fileName: /var/log/kibana.log
      layout:
        type: pattern
  root:
    appenders: [file]

Log in JSON format

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Log the default log format to JSON layout instead of pattern (the default). With json layout, log messages will be formatted as JSON strings in ECS format that includes a timestamp, log level, logger, message text and any other metadata that may be associated with the log message itself.

logging:
  appenders:
    json-layout:
      type: console
      layout:
        type: json
  root:
    appenders: [json-layout]

Log with meta to stdout

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Include %meta in your pattern layout:

logging:
  appenders:
    console-meta:
      type: console
      layout:
        type: pattern
        pattern: "[%date] [%level] [%logger] [%meta] %message"
  root:
    appenders: [console-meta]

Log Elasticsearch queries

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logging:
  appenders:
    console_appender:
      type: console
      layout:
        type: pattern
        highlight: true
  root:
    appenders: [console_appender]
    level: warn
  loggers:
    - name: elasticsearch.query
      level: debug

Change overall log level

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logging:
  root:
    level: debug

Customize specific log records

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Here is a detailed configuration example that can be used to configure loggers, appenders and layouts:

logging:
  appenders:
    console:
      type: console
      layout:
        type: pattern
        highlight: true
    file:
      type: file
      fileName: /var/log/kibana.log
    custom:
      type: console
      layout:
        type: pattern
        pattern: "[%date][%level] %message"
    json-file-appender:
      type: file
      fileName: /var/log/kibana-json.log
      layout:
        type: json

  root:
    appenders: [console, file]
    level: error

  loggers:
    - name: plugins
      appenders: [custom]
      level: warn
    - name: plugins.myPlugin
      level: info
    - name: server
      level: fatal
    - name: optimize
      appenders: [console]
    - name: telemetry
      appenders: [json-file-appender]
      level: all
    - name: metrics.ops
      appenders: [console]
      level: debug

Here is what we get with the config above:

Context name	Appenders	Level
root	console, file	error
plugins	custom	warn
plugins.myPlugin	custom	info
server	console, file	fatal
optimize	console	error
telemetry	json-file-appender	all
metrics.ops	console	debug

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