File
The file output plugin allows to write the data received through the input plugin to file.

Configuration Parameters

The plugin supports the following configuration parameters:
Key
Description
Path
File path to output. If not set, the filename will be tag name.
Format
The format of the file content. See also Format section. Default: out_file.

Format

out_file format

Output time, tag and json records. There is no configuration parameters for out_file.
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tag: [time, {"key1":"value1", "key2":"value2", "key3":"value3"}]
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plain format

Output the records as JSON (without additional tag and timestamp attributes). There is no configuration parameters for plain format.
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{"key1":"value1", "key2":"value2", "key3":"value3"}
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csv format

Output the records as csv. Csv supports an additional configuration parameter.
Key
Description
Delimiter
The character to separate each data. Default: ','
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time[delimiter]"value1"[delimiter]"value2"[delimiter]"value3"
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ltsv format

Output the records as LTSV. LTSV supports an additional configuration parameter.
Key
Description
Delimiter
The character to separate each pair. Default: '\t'(TAB)
Label_Delimiter
The character to separate label and the value. Default: ':'
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field1[label_delimiter]value1[delimiter]field2[label_delimiter]value2\n
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template format

Output the records using a custom format template.
Key
Description
Template
The format string. Default: '{time} {message}'
This accepts a formatting template and fills placeholders using corresponding values in a record.
For example, if you set up the configuration as below:
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[INPUT]
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Name mem
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[OUTPUT]
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Name file
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Format template
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Template {time} used={Mem.used} free={Mem.free} total={Mem.total}
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You will get the following output:
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1564462620.000254 used=1045448 free=31760160 total=32805608
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Getting Started

You can run the plugin from the command line or through the configuration file:

Command Line

From the command line you can let Fluent Bit count up a data with the following options:
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$ fluent-bit -i cpu -o file -p path=output.txt
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Configuration File

In your main configuration file append the following Input & Output sections:
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[INPUT]
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Name cpu
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Tag cpu
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[OUTPUT]
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Name file
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Match *
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Path output.txt
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Last modified 2yr ago