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Config: Inject Section

Inject section overview

The inject section can be under <match> or <filter> section. It is enabled for the plugins that support injecting values to the event record.
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<match>
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@type file
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# ...
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<inject>
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# ...
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</inject>
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</match>
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Example

Configuration:
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<inject>
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time_key fluentd_time
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time_type string
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time_format %Y-%m-%dT%H:%M:%S.%NZ
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tag_key fluentd_tag
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</inject>
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Event Record:
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tag: test
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time: 1547575563.952259
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record: {"message":"hello"}
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Injected Record:
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{"message":"hello","fluentd_tag":"test","fluentd_time":"2019-01-15T18:06:03.952259000Z"}
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Inject Section Parameter

Inject Parameters

    hostname_key (string) (optional): the field name to inject hostname
      Default: nil
    hostname (string) (optional): hostname value
      Default: Socket.gethostname
    worker_id_key (string) (optional): the field name to inject
    worker_id
      Default: nil
    tag_key (string) (optional): the field name to inject tag
      Default: nil
    time_key (string) (optional): the field name to inject time
      Default: nil

Time Parameters

    time_type (enum) (optional): parses/formats value according to this
    type
      Default: float
      Available values:
        float: seconds from Epoch + microseconds (e.g.
        1510544836.154709)
        unixtime: seconds from Epoch (e.g. 1510544836)
        unixtime_millis (since v1.11.4): milliseconds from Epoch
        (e.g. 1510544836154)
        unixtime_micros (since v1.20.0): microseconds from Epoch
        (e.g. 1510544836154709)
        unixtime_nanos (since v1.20.0): nanoseconds from Epoch
        (e.g. 1510544836154709804)
        string: use format specified by time_format, local time or time
        zone
    time_format (string) (optional): processes value according to the
    specified format. This is available only when time_type is string.
      Default: nil
      Available time format:
        For more details about formatting, see
        ​Time#strftime.
        For more details about parsing, see
        ​Time.strptime.
        %iso8601 (only for parsing)
        Use %N to parse/format with sub-second precision, because
        ​strptime does not support
        %3N, %6N, %9N, and %L.
    localtime (bool) (optional): if true, uses local time. Otherwise,
    UTC is used. This is exclusive with utc.
      Default: true
    utc (bool) (optional): if true, uses UTC. Otherwise, local time is
    used. This is exclusive with localtime.
      Default: false
    timezone (string) (optional): uses the specified timezone. One can
    parse/format the time value in the specified timezone format.
      Default: nil
      Available time zone format:
        1.
        [+-]HH:MM (e.g. "+09:00") (recommended)
        2.
        [+-]HHMM (e.g. "+0900")
        3.
        [+-]HH (e.g. "+09")
        4.
        Region/Zone (e.g. Asia/Tokyo)
        5.
        Region/Zone/Zone (e.g. America/Argentina/Buenos_Aires)
If this article is incorrect or outdated, or omits critical information, please let us know. Fluentd is an open-source project under Cloud Native Computing Foundation (CNCF). All components are available under the Apache 2 License.
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Contents
Inject section overview
Example
Inject Section Parameter
Inject Parameters
Time Parameters