telegraf/plugins/inputs/tail/README.md

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# tail Input Plugin
The tail plugin "tails" a logfile and parses each log message.
By default, the tail plugin acts like the following unix tail command:
```
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tail -F --lines=0 myfile.log
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```
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- `-F` means that it will follow the _name_ of the given file, so
that it will be compatible with log-rotated files, and that it will retry on
inaccessible files.
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- `--lines=0` means that it will start at the end of the file (unless
the `from_beginning` option is set).
see http://man7.org/linux/man-pages/man1/tail.1.html for more details.
The plugin expects messages in one of the
[Telegraf Input Data Formats](https://github.com/influxdata/telegraf/blob/master/docs/DATA_FORMATS_INPUT.md).
### Configuration:
```toml
# Stream a log file, like the tail -f command
[[inputs.tail]]
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## files to tail.
## These accept standard unix glob matching rules, but with the addition of
## ** as a "super asterisk". ie:
## "/var/log/**.log" -> recursively find all .log files in /var/log
## "/var/log/*/*.log" -> find all .log files with a parent dir in /var/log
## "/var/log/apache.log" -> just tail the apache log file
##
## See https://github.com/gobwas/glob for more examples
##
files = ["/var/mymetrics.out"]
## Read file from beginning.
from_beginning = false
## Data format to consume.
## Each data format has it's own unique set of configuration options, read
## more about them here:
## https://github.com/influxdata/telegraf/blob/master/docs/DATA_FORMATS_INPUT.md
data_format = "influx"
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```