176 lines
4.2 KiB
Plaintext
176 lines
4.2 KiB
Plaintext
[[logging-settings]]
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=== Logging settings in {kib}
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++++
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<titleabbrev>Logging settings</titleabbrev>
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++++
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{kib} relies on three high-level entities to set the logging service: appenders, loggers, and root.
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- Appenders define where log messages are displayed (stdout or console) and their layout (`pattern` or `json`). They also allow you to specify if you want the logs stored and, if so, where (file on the disk).
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- Loggers define what logging settings, such as the level of verbosity and the appenders, to apply to a particular context. Each log entry context provides information about the service or plugin that emits it and any of its sub-parts, for example, `metrics.ops` or `elasticsearch.query`.
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- Root is a logger that applies to all the log entries in {kib}.
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Refer to the <<log-settings-examples, examples>> for common configuration use cases. To learn more about possible configuration values, go to {kibana-ref}/logging-service.html[{kib}'s Logging service].
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[[log-settings-examples]]
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==== Examples
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Here are some configuration examples for the most common logging use cases:
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[[log-to-file-example]]
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===== Log to a file
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Log the default log format to a file instead of to stdout (the default).
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[source,yaml]
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----
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logging:
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appenders:
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file:
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type: file
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fileName: /var/log/kibana.log
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layout:
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type: pattern
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root:
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appenders: [file]
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----
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[[log-in-json-ECS-example]]
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===== Log in JSON format
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Log the default log format to JSON layout instead of pattern (the default).
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With `json` layout, log messages will be formatted as JSON strings in https://www.elastic.co/guide/en/ecs/current/ecs-reference.html[ECS format] that includes a timestamp, log level, logger, message text and any other metadata that may be associated with the log message itself.
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[source,yaml]
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----
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logging:
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appenders:
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json-layout:
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type: console
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layout:
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type: json
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root:
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appenders: [json-layout]
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----
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[[log-with-meta-to-stdout]]
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===== Log with meta to stdout
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Include `%meta` in your pattern layout:
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[source,yaml]
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----
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logging:
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appenders:
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console-meta:
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type: console
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layout:
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type: pattern
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pattern: "[%date] [%level] [%logger] [%meta] %message"
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root:
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appenders: [console-meta]
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----
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[[log-elasticsearch-queries]]
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===== Log {es} queries
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[source,yaml]
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--
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logging:
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appenders:
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console_appender:
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type: console
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layout:
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type: pattern
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highlight: true
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root:
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appenders: [console_appender]
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level: warn
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loggers:
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- name: elasticsearch.query
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level: debug
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--
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[[change-overall-log-level]]
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===== Change overall log level
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[source,yaml]
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----
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logging:
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root:
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level: debug
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----
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[[customize-specific-log-records]]
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===== Customize specific log records
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Here is a detailed configuration example that can be used to configure _loggers_, _appenders_ and _layouts_:
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[source,yaml]
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----
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logging:
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appenders:
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console:
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type: console
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layout:
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type: pattern
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highlight: true
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file:
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type: file
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fileName: /var/log/kibana.log
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custom:
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type: console
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layout:
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type: pattern
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pattern: "[%date][%level] %message"
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json-file-appender:
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type: file
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fileName: /var/log/kibana-json.log
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layout:
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type: json
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root:
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appenders: [console, file]
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level: error
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loggers:
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- name: plugins
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appenders: [custom]
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level: warn
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- name: plugins.myPlugin
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level: info
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- name: server
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level: fatal
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- name: optimize
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appenders: [console]
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- name: telemetry
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appenders: [json-file-appender]
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level: all
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- name: metrics.ops
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appenders: [console]
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level: debug
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----
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Here is what we get with the config above:
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[options="header"]
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|===
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| Context name | Appenders | Level
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| root | console, file | error
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| plugins | custom | warn
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| plugins.myPlugin | custom | info
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| server | console, file | fatal
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| optimize | console | error
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| telemetry | json-file-appender | all
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| metrics.ops | console | debug
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|===
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NOTE: If you modify `root.appenders`, make sure to include `default`.
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// For more details about logging configuration, refer to the logging system documentation (update to include a link).
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